JavaScript函数小结

JS基础知识

  1 /**********************
  2 1：基础知识 
  3 
  4 1 创建脚本块
  5 
  6 1: <script language=”JavaScript”>
  7 2: JavaScript code goes here
  8 3: </script> 
  9 
 10 2 隐藏脚本代码
 11 
 12 1: <script language=”JavaScript”>
 13 2: <!--
 14 3: document.write(“Hello”);
 15 4: // -->
 16 5: </script> 
 17 
 18 在不支持JavaScript的浏览器中将不执行相关代码
 19 
 20 3 浏览器不支持的时候显示
 21 
 22 1: <noscript>
 23 2: Hello to the non-JavaScript browser.
 24 3: </noscript> 
 25 
 26 4 链接外部脚本文件
 27 
 28 1: <script language=”JavaScript” src="/”filename.js"”></script> 
 29 
 30 5 注释脚本
 31 
 32 1: // This is a comment
 33 2: document.write(“Hello”); // This is a comment
 34 3: /*
 35 4: All of this
 36 5: is a comment
 37 6: */ 
 38 
 39 6 输出到浏览器
 40 
 41 1: document.write(“<strong>Hello</strong>”); 
 42 
 43 7 定义变量
 44 
 45 1: var myVariable = “some value”; 
 46 
 47 8 字符串相加
 48 
 49 1: var myString = “String1” + “String2”; 
 50 
 51 9 字符串搜索
 52 
 53 1: <script language=”JavaScript”>
 54 2: <!--
 55 3: var myVariable = “Hello there”;
 56 4: var therePlace = myVariable.search(“there”);
 57 5: document.write(therePlace);
 58 6: // -->
 59 7: </script> 
 60 
 61 10 字符串替换
 62 
 63 1: thisVar.replace(“Monday”,”Friday”); 
 64 
 65 11 格式化字串
 66 
 67 1: <script language=”JavaScript”>
 68 2: <!--
 69 3: var myVariable = “Hello there”;
 70 4: document.write(myVariable.big() + “<br/>”);
 71 5: document.write(myVariable.blink() + “<br/>”);
 72 6: document.write(myVariable.bold() + “<br/>”);
 73 7: document.write(myVariable.fixed() + “<br/>”);
 74 8: document.write(myVariable.fontcolor(“red”) + “<br/>”);
 75 9: document.write(myVariable.fontsize(“18pt”) + “<br/>”);
 76 10: document.write(myVariable.italics() + “<br/>”);
 77 11: document.write(myVariable.small() + “<br/>”);
 78 12: document.write(myVariable.strike() + “<br/>”);
 79 13: document.write(myVariable.sub() + “<br/>”);
 80 14: document.write(myVariable.sup() + “<br/>”);
 81 15: document.write(myVariable.toLowerCase() + “<br/>”);
 82 16: document.write(myVariable.toUpperCase() + “<br/>”);
 83 17: 
 84 18: var firstString = “My String”;
 85 19: var finalString = firstString.bold().toLowerCase().fontcolor(“red”);
 86 20: // -->
 87 21: </script> 
 88 
 89 12 创建数组
 90 
 91 1: <script language=”JavaScript”>
 92 2: <!--
 93 3: var myArray = new Array(5);
 94 4: myArray[0] = “First Entry”;
 95 5: myArray[1] = “Second Entry”;
 96 6: myArray[2] = “Third Entry”;
 97 7: myArray[3] = “Fourth Entry”;
 98 8: myArray[4] = “Fifth Entry”;
 99 9: var anotherArray = new Array(“First Entry”,”Second Entry”,”Third Entry”,”Fourth Entry”,”Fifth Entry”);
100 10: // -->
101 11: </script> 
102 
103 13 数组排序
104 
105 1: <script language=”JavaScript”>
106 2: <!--
107 3: var myArray = new Array(5);
108 4: myArray[0] = “z”;
109 5: myArray[1] = “c”;
110 6: myArray[2] = “d”;
111 7: myArray[3] = “a”;
112 8: myArray[4] = “q”;
113 9: document.write(myArray.sort());
114 10: // -->
115 11: </script> 
116 
117 14 分割字符串
118 
119 1: <script language=”JavaScript”>
120 2: <!--
121 3: var myVariable = “a,b,c,d”;
122 4: var stringArray = myVariable.split(“,”);
123 5: document.write(stringArray[0]);
124 6: document.write(stringArray[1]);
125 7: document.write(stringArray[2]);
126 8: document.write(stringArray[3]);
127 9: // -->
128 10: </script> 
129 
130 15 弹出警告信息
131 
132 1: <script language=”JavaScript”>
133 2: <!--
134 3: window.alert(“Hello”);
135 4: // -->
136 5: </script> 
137 
138 16 弹出确认框
139 
140 1: <script language=”JavaScript”>
141 2: <!--
142 3: var result = window.confirm(“Click OK to continue”);
143 4: // -->
144 5: </script> 
145 
146 17 定义函数
147 
148 1: <script language=”JavaScript”>
149 2: <!--
150 3: function multiple(number1,number2) { 
151 4: var result = number1 * number2;
152 5: return result;
153 6: }
154 7: // -->
155 8: </script> 
156 
157 18 调用JS函数
158 
159 1: <a href=”#” onClick=”functionName()”>Link text</a>
160 2: <a href="/”javascript:functionName"()”>Link text</a> 
161 
162 19 在页面加载完成后执行函数
163 
164 1: <body onLoad=”functionName();”>
165 2: Body of the page
166 3: </body> 
167 
168 20 条件判断
169 
170 1: <script>
171 2: <!--
172 3: var userChoice = window.confirm(“Choose OK or Cancel”);
173 4: var result = (userChoice == true) ? “OK” : “Cancel”;
174 5: document.write(result);
175 6: // -->
176 7: </script> 
177 21 指定次数循环
178 
179 1: <script>
180 2: <!--
181 3: var myArray = new Array(3);
182 4: myArray[0] = “Item 0”;
183 5: myArray[1] = “Item 1”;
184 6: myArray[2] = “Item 2”;
185 7: for (i = 0; i < myArray.length; i++) { 
186 8: document.write(myArray[i] + “<br/>”);
187 9: }
188 10: // -->
189 11: </script> 
190 
191 22 设定将来执行
192 
193 1: <script>
194 2: <!--
195 3: function hello() { 
196 4: window.alert(“Hello”);
197 5: }
198 6: window.setTimeout(“hello()”,5000);
199 7: // -->
200 8: </script> 
201 
202 23 定时执行函数
203 
204 1: <script>
205 2: <!--
206 3: function hello() { 
207 4: window.alert(“Hello”);
208 5: window.setTimeout(“hello()”,5000);
209 6: }
210 7: window.setTimeout(“hello()”,5000);
211 8: // -->
212 9: </script> 
213 
214 24 取消定时执行
215 
216 1: <script>
217 2: <!--
218 3: function hello() { 
219 4: window.alert(“Hello”);
220 5: }
221 6: var myTimeout = window.setTimeout(“hello()”,5000);
222 7: window.clearTimeout(myTimeout);
223 8: // -->
224 9: </script> 
225 
226 25 在页面卸载时候执行函数
227 
228 1: <body onUnload=”functionName();”>
229 2: Body of the page
230 3: </body> 
231 
232 JavaScript就这么回事2：浏览器输出 
233 
234 26 访问document对象
235 
236 1: <script language=”JavaScript”>
237 2: var myURL = document.URL;
238 3: window.alert(myURL);
239 4: </script> 
240 
241 27 动态输出HTML
242 
243 1: <script language=”JavaScript”>
244 2: document.write(“<p>Here’s some information about this document:</p>”);
245 3: document.write(“<ul>”);
246 4: document.write(“<li>Referring Document: “ + document.referrer + “</li>”);
247 5: document.write(“<li>Domain: “ + document.domain + “</li>”);
248 6: document.write(“<li>URL: “ + document.URL + “</li>”);
249 7: document.write(“</ul>”);
250 8: </script> 
251 
252 28 输出换行
253 
254 1: document.writeln(“<strong>a</strong>”);
255 2: document.writeln(“b”); 
256 
257 29 输出日期
258 
259 1: <script language=”JavaScript”>
260 2: var thisDate = new Date();
261 3: document.write(thisDate.toString());
262 4: </script> 
263 
264 30 指定日期的时区
265 
266 1: <script language=”JavaScript”>
267 2: var myOffset = -2;
268 3: var currentDate = new Date();
269 4: var userOffset = currentDate.getTimezoneOffset()/60;
270 5: var timeZoneDifference = userOffset - myOffset;
271 6: currentDate.setHours(currentDate.getHours() + timeZoneDifference);
272 7: document.write(“The time and date in Central Europe is: “ + currentDate.toLocaleString());
273 8: </script> 
274 
275 31 设置日期输出格式
276 
277 1: <script language=”JavaScript”>
278 2: var thisDate = new Date();
279 3: var thisTimeString = thisDate.getHours() + “:” + thisDate.getMinutes();
280 4: var thisDateString = thisDate.getFullYear() + “/” + thisDate.getMonth() + “/” + thisDate.getDate();
281 5: document.write(thisTimeString + “ on “ + thisDateString);
282 6: </script> 
283 
284 32 读取URL参数
285 
286 1: <script language=”JavaScript”>
287 2: var urlParts = document.URL.split(“?”);
288 3: var parameterParts = urlParts[1].split(“&”);
289 4: for (i = 0; i < parameterParts.length; i++) { 
290 5: var pairParts = parameterParts[i].split(“=”);
291 6: var pairName = pairParts[0];
292 7: var pairValue = pairParts[1];
293 8: document.write(pairName + “ ：“ +pairValue );
294 9: }
295 10: </script> 
296 
297 你还以为HTML是无状态的么？
298 
299 33 打开一个新的document对象
300 
301 1: <script language=”JavaScript”>
302 2: function newDocument() { 
303 3: document.open();
304 4: document.write(“<p>This is a New Document.</p>”);
305 5: document.close();
306 6: }
307 7: </script> 
308 
309 34 页面跳转
310 
311 1: <script language=”JavaScript”>
312 2: window.location = “http://www.liu21st.com/”;
313 3: </script> 
314 
315 35 添加网页加载进度窗口
316 
317 1: <html>
318 2: <head>
319 3: <script language=’javaScript’>
320 4: var placeHolder = window.open(’holder.html’,’placeholder’,’width=200,height=200’);
321 5: </script>
322 6: <title>The Main Page</title>
323 7: </head>
324 8: <body onLoad=’placeHolder.close()’>
325 9: <p>This is the main page</p>
326 10: </body>
327 11: </html>
328 
329 JavaScript就这么回事3：图像 
330 
331 36 读取图像属性
332 
333 1: <img src="/”image1.jpg"” name=”myImage”>
334 2: <a href=”# ” onClick=”window.alert(document.myImage.width)”>Width</a>
335 3: 
336 
337 37 动态加载图像
338 
339 1: <script language=”JavaScript”>
340 2: myImage = new Image;
341 3: myImage.src = “Tellers1.jpg”;
342 4: </script> 
343 
344 38 简单的图像替换
345 
346 1: <script language=”JavaScript”>
347 2: rollImage = new Image;
348 3: rollImage.src = “rollImage1.jpg”;
349 4: defaultImage = new Image;
350 5: defaultImage.src = “image1.jpg”;
351 6: </script>
352 7: <a href="/”myUrl"” onMouseOver=”document.myImage.src = rollImage.src;”
353 8: onMouseOut=”document.myImage.src = defaultImage.src;”>
354 9: <img src="/”image1.jpg"” name=”myImage” width=100 height=100 border=0> 
355 
356 39 随机显示图像
357 
358 1: <script language=”JavaScript”>
359 2: var imageList = new Array;
360 3: imageList[0] = “image1.jpg”;
361 4: imageList[1] = “image2.jpg”;
362 5: imageList[2] = “image3.jpg”;
363 6: imageList[3] = “image4.jpg”;
364 7: var imageChoice = Math.floor(Math.random() * imageList.length);
365 8: document.write(‘<img src=”’ + imageList[imageChoice] + ‘“>’);
366 9: </script> 
367 
368 40 函数实现的图像替换
369 
370 1: <script language=”JavaScript”>
371 2: var source = 0;
372 3: var replacement = 1;
373 4: function createRollOver(originalImage,replacementImage) { 
374 5: var imageArray = new Array;
375 6: imageArray[source] = new Image;
376 7: imageArray[source].src = originalImage;
377 8: imageArray[replacement] = new Image;
378 9: imageArray[replacement].src = replacementImage;
379 10: return imageArray;
380 11: }
381 12: var rollImage1 = createRollOver(“image1.jpg”,”rollImage1.jpg”);
382 13: </script>
383 14: <a href=”#” onMouseOver=”document.myImage1.src = rollImage1[replacement].src;”
384 15: onMouseOut=”document.myImage1.src = rollImage1[source].src;”>
385 16: <img src="/”image1.jpg"” width=100 name=”myImage1” border=0>
386 17: </a> 
387 
388 41 创建幻灯片
389 
390 1: <script language=”JavaScript”>
391 2: var imageList = new Array;
392 3: imageList[0] = new Image;
393 4: imageList[0].src = “image1.jpg”;
394 5: imageList[1] = new Image;
395 6: imageList[1].src = “image2.jpg”;
396 7: imageList[2] = new Image;
397 8: imageList[2].src = “image3.jpg”;
398 9: imageList[3] = new Image;
399 10: imageList[3].src = “image4.jpg”;
400 11: function slideShow(imageNumber) { 
401 12: document.slideShow.src = imageList[imageNumber].src;
402 13: imageNumber += 1;
403 14: if (imageNumber < imageList.length) { 
404 15: window.setTimeout(“slideShow(“ + imageNumber + “)”,3000);
405 16: }
406 17: }
407 18: </script>
408 19: </head>
409 20: <body onLoad=”slideShow(0)”>
410 21: <img src="/”image1.jpg"” width=100 name=”slideShow”> 
411 
412 42 随机广告图片
413 
414 1: <script language=”JavaScript”>
415 2: var imageList = new Array;
416 3: imageList[0] = “image1.jpg”;
417 4: imageList[1] = “image2.jpg”;
418 5: imageList[2] = “image3.jpg”;
419 6: imageList[3] = “image4.jpg”;
420 7: var urlList = new Array;
421 8: urlList[0] = “http://some.host/”;
422 9: urlList[1] = “http://another.host/”;
423 10: urlList[2] = “http://somewhere.else/”;
424 11: urlList[3] = “http://right.here/”;
425 12: var imageChoice = Math.floor(Math.random() * imageList.length);
426 13: document.write(‘<a href=”’ + urlList[imageChoice] + ‘“><img src=”’ + imageList[imageChoice] + ‘“></a>’);
427 14: </script> 
428 
429 JavaScript就这么回事4：表单 
430 
431 43 表单构成
432 
433 1: <form method=”post” action=”target.html” name=”thisForm”>
434 2: <input type=”text” name=”myText”>
435 3: <select name=”mySelect”>
436 4: <option value=”1”>First Choice</option>
437 5: <option value=”2”>Second Choice</option>
438 6: </select>
439 7: <br/>
440 8: <input type=”submit” value=”Submit Me”>
441 9: </form> 
442 
443 44 访问表单中的文本框内容
444 
445 1: <form name=”myForm”>
446 2: <input type=”text” name=”myText”>
447 3: </form>
448 4: <a href=’#’ onClick=’window.alert(document.myForm.myText.value);’>Check Text Field</a> 
449 
450 45 动态复制文本框内容
451 
452 1: <form name=”myForm”>
453 2: Enter some Text: <input type=”text” name=”myText”><br/>
454 3: Copy Text: <input type=”text” name=”copyText”>
455 4: </form>
456 5: <a href=”#” onClick=”document.myForm.copyText.value =
457 6: document.myForm.myText.value;”>Copy Text Field</a> 
458 
459 46 侦测文本框的变化
460 
461 1: <form name=”myForm”>
462 2: Enter some Text: <input type=”text” name=”myText” onChange=”alert(this.value);”>
463 3: </form> 
464 
465 47 访问选中的Select
466 
467 1: <form name=”myForm”>
468 2: <select name=”mySelect”>
469 3: <option value=”First Choice”>1</option>
470 4: <option value=”Second Choice”>2</option>
471 5: <option value=”Third Choice”>3</option>
472 6: </select>
473 7: </form>
474 8: <a href=’#’ onClick=’alert(document.myForm.mySelect.value);’>Check Selection List</a> 
475 
476 48 动态增加Select项
477 
478 1: <form name=”myForm”>
479 2: <select name=”mySelect”>
480 3: <option value=”First Choice”>1</option>
481 4: <option value=”Second Choice”>2</option>
482 5: </select>
483 6: </form>
484 7: <script language=”JavaScript”>
485 8: document.myForm.mySelect.length++;
486 9: document.myForm.mySelect.options[document.myForm.mySelect.length - 1].text = “3”;
487 10: document.myForm.mySelect.options[document.myForm.mySelect.length - 1].value = “Third Choice”;
488 11: </script> 
489 
490 49 验证表单字段
491 
492 1: <script language=”JavaScript”>
493 2: function checkField(field) { 
494 3: if (field.value == “”) { 
495 4: window.alert(“You must enter a value in the field”);
496 5: field.focus();
497 6: }
498 7: }
499 8: </script>
500 9: <form name=”myForm” action=”target.html”>
501 10: Text Field: <input type=”text” name=”myField”onBlur=”checkField(this)”>
502 11: <br/><input type=”submit”>
503 12: </form> 
504 
505 50 验证Select项
506 
507 1: function checkList(selection) { 
508 2: if (selection.length == 0) { 
509 3: window.alert(“You must make a selection from the list.”);
510 4: return false;
511 5: }
512 6: return true;
513 7: }
514 
515 51 动态改变表单的action
516 
517 1: <form name=”myForm” action=”login.html”>
518 2: Username: <input type=”text” name=”username”><br/>
519 3: Password: <input type=”password” name=”password”><br/>
520 4: <input type=”button” value=”Login” onClick=”this.form.submit();”>
521 5: <input type=”button” value=”Register” onClick=”this.form.action = ‘register.html’; this.form.submit();”>
522 6: <input type=”button” value=”Retrieve Password” onClick=”this.form.action = ‘password.html’; this.form.submit();”>
523 7: </form> 
524 
525 52 使用图像按钮
526 
527 1: <form name=”myForm” action=”login.html”>
528 2: Username: <input type=”text” name=”username”><br/>
529 3: Password: <input type=”password”name=”password”><br/>
530 4: <input type=”image” src="/”login.gif"” value=”Login”>
531 5: </form>
532 6: 
533 
534 53 表单数据的加密
535 
536 1: <SCRIPT LANGUAGE=’JavaScript’>
537 2: <!--
538 3: function encrypt(item) { 
539 4: var newItem = ’’;
540 5: for (i=0; i < item.length; i++) { 
541 6: newItem += item.charCodeAt(i) + ’.’;
542 7: }
543 8: return newItem;
544 9: }
545 10: function encryptForm(myForm) { 
546 11: for (i=0; i < myForm.elements.length; i++) { 
547 12: myForm.elements[i].value = encrypt(myForm.elements[i].value);
548 13: }
549 14: }
550 15: 
551 16: //-->
552 17: </SCRIPT>
553 18: <form name=’myForm’ onSubmit=’encryptForm(this); window.alert(this.myField.value);’>
554 19: Enter Some Text: <input type=text name=myField><input type=submit>
555 20: </form> 
556 
557 JavaScript就这么回事5：窗口和框架 
558 
559 54 改变浏览器状态栏文字提示
560 
561 1: <script language=”JavaScript”>
562 2: window.status = “A new status message”;
563 3: </script> 
564 
565 55 弹出确认提示框
566 
567 1: <script language=”JavaScript”>
568 2: var userChoice = window.confirm(“Click OK or Cancel”);
569 3: if (userChoice) { 
570 4: document.write(“You chose OK”);
571 5: } else { 
572 6: document.write(“You chose Cancel”);
573 7: }
574 8: </script> 
575 
576 56 提示输入
577 
578 1: <script language=”JavaScript”>
579 2: var userName = window.prompt(“Please Enter Your Name”,”Enter Your Name Here”);
580 3: document.write(“Your Name is “ + userName);
581 4: </script> 
582 
583 57 打开一个新窗口
584 
585 1: //打开一个名称为myNewWindow的浏览器新窗口
586 2: <script language=”JavaScript”>
587 3: window.open(“http://www.liu21st.com/”,”myNewWindow”);
588 4: </script> 
589 
590 58 设置新窗口的大小
591 
592 1: <script language=”JavaScript”>
593 2: window.open(“http://www.liu21st.com/”,”myNewWindow”,’height=300,width=300’);
594 3: </script> 
595 
596 59 设置新窗口的位置
597 
598 1: <script language=”JavaScript”>
599 2: window.open(“http://www.liu21st.com/”,”myNewWindow”,’height=300,width=300,left=200,screenX=200,top=100,screenY=100’);
600 3: </script> 
601 
602 60 是否显示工具栏和滚动栏
603 
604 1: <script language=”JavaScript”>
605 2: window.open(“http: 
606 
607 61 是否可以缩放新窗口的大小
608 
609 1: <script language=”JavaScript”>
610 2: window.open(’http://www.liu21st.com/’ , ’myNewWindow’, ’resizable=yes’ );</script> 
611 
612 62 加载一个新的文档到当前窗口
613 
614 1: <a href=’#’ onClick=’document.location = ’125a.html’;’ >Open New Document</a> 
615 
616 63 设置页面的滚动位置
617 
618 1: <script language=”JavaScript”>
619 2: if (document.all) { //如果是IE浏览器则使用scrollTop属性
620 3: document.body.scrollTop = 200;
621 4: } else { //如果是NetScape浏览器则使用pageYOffset属性
622 5: window.pageYOffset = 200;
623 6: }</script> 
624 
625 64 在IE中打开全屏窗口
626 
627 1: <a href=’#’ onClick=”window.open(’http://www.juxta.com/’,’newWindow’,’fullScreen=yes’);”>Open a full-screen window</a> 
628 
629 65 新窗口和父窗口的操作
630 
631 1: <script language=”JavaScript”>
632 2: //定义新窗口
633 3: var newWindow = window.open(“128a.html”,”newWindow”);
634 4: newWindow.close(); //在父窗口中关闭打开的新窗口
635 5: </script>
636 6: 在新窗口中关闭父窗口
637 7: window.opener.close() 
638 
639 66 往新窗口中写内容
640 
641 1: <script language=”JavaScript”>
642 2: var newWindow = window.open(“”,”newWindow”);
643 3: newWindow.document.open();
644 4: newWindow.document.write(“This is a new window”);
645 5: newWIndow.document.close();
646 6: </script> 
647 
648 67 加载页面到框架页面
649 
650 1: <frameset cols=”50%,*”>
651 2: <frame name=”frame1” src="/”135a.html"”>
652 3: <frame name=”frame2” src="/”about:blank"”>
653 4: </frameset>
654 5: 在frame1中加载frame2中的页面
655 6: parent.frame2.document.location = “135b.html”; 
656 
657 68 在框架页面之间共享脚本
658 如果在frame1中html文件中有个脚本
659 
660 1: function doAlert() { 
661 2: window.alert(“Frame 1 is loaded”);
662 3: } 
663 
664 那么在frame2中可以如此调用该方法
665 
666 1: <body onLoad=”parent.frame1.doAlert();”>
667 2: This is frame 2.
668 3: </body> 
669 
670 69 数据公用
671 可以在框架页面定义数据项，使得该数据可以被多个框架中的页面公用
672 
673 1: <script language=”JavaScript”>
674 2: var persistentVariable = “This is a persistent value”;
675 3: </script>
676 4: <frameset cols=”50%,*”>
677 5: <frame name=”frame1” src="/”138a.html"”>
678 6: <frame name=”frame2” src="/”138b.html"”>
679 7: </frameset> 
680 
681 这样在frame1和frame2中都可以使用变量persistentVariable
682 
683 70 框架代码库
684 根据以上的一些思路，我们可以使用一个隐藏的框架页面来作为整个框架集的代码库
685 
686 1: <frameset cols=”0,50%,*”>
687 2: <frame name=”codeFrame” src="/”140code.html"”>
688 3: <frame name=”frame1” src="/”140a.html"”>
689 4: <frame name=”frame2” src="/”140b.html"”>
690 5: </frameset>
691 
692 *************/

View Code

JS常用语句

  1 /*
  2 1.document.write(""); 输出语句 
  3 2.JS中的注释为// 
  4 3.传统的HTML文档顺序是: 
  5 document->html->(head,body) 
  6 4.一个浏览器窗口中的DOM顺序是: 
  7 window->(navigator,screen,history,location,document) 
  8 5.得到表单中元素的名称和值: 
  9 document.getElementById("表单中元素的ID号").name(或value) 
 10 6.一个小写转大写的JS: 
 11 document.getElementById("output").value=document.getElementById("input").value.toUpperCase(); 
 12 7.JS中的值类型: 
 13 String,Number,Boolean,Null,Object,Function 
 14 8.JS中的字符型转换成数值型: 
 15 parseInt(),parseFloat() 
 16 9.JS中的数字转换成字符型: 
 17 ("" 变量) 
 18 10.JS中的取字符串长度是: 
 19 (length) 
 20 11.JS中的字符与字符相连接使用+号. 
 21 12.JS中的比较操作符有: 
 22 ==等于,!=不等于,>,>=,<.<= 
 23 13.JS中声明变量使用: 
 24 var来进行声明 
 25 14.JS中的判断语句结构: 
 26 if(condition){}else{} 
 27 15.JS中的循环结构: 
 28 for([initial expression];[condition];[upadte expression]) {inside loop} 
 29 16.循环中止的命令是: 
 30 break 
 31 17.JS中的函数定义: 
 32 function functionName([parameter],…){statement[s]} 
 33 18.当文件中出现多个form表单时.可以用document.forms[0],document.forms[1]来代替. 
 34 19.窗口: 
 35 打开窗口window.open(), 关闭一个窗口:window.close(), 窗口本身:self 
 36 20.状态栏的设置: 
 37 window.status="字符"; 
 38 21.弹出提示信息: 
 39 window.alert("字符"); 
 40 22.弹出确认框: 
 41 window.confirm(); 
 42 23.弹出输入提示框: 
 43 window.prompt(); 
 44 24.指定当前显示链接的位置: 
 45 window.location.href="URL" 
 46 25.取出窗体中的所有表单的数量: 
 47 document.forms.length 
 48 26.关闭文档的输出流: 
 49 document.close(); 
 50 27.字符串追加连接符: = 
 51 28.创建一个文档元素: 
 52 document.createElement(),document.createTextNode() 
 53 29.得到元素的方法: 
 54 document.getElementById() 
 55 30.设置表单中所有文本型的成员的值为空: 
 56 var form = window.document.forms[0] 
 57 for (var i = 0; i<form.elements.length;i ){ 
 58 if (form.elements.type == "text"){ 
 59 form.elements.value = ""; 
 60 } 
 61 } 
 62 31.复选按钮在JS中判断是否选中: 
 63 document.forms[0].checkThis.checked 
 64 (checked属性代表为是否选中返回TRUE或FALSE) 
 65 32.单选按钮组(单选按钮的名称必须相同): 
 66 取单选按钮组的长度document.forms[0].groupName.length 
 67 33.单选按钮组判断是否被选中也是用checked. 
 68 34.下拉列表框的值: 
 69 document.forms[0].selectName.options[n].value 
 70 (n有时用下拉列表框名称加上.selectedIndex来确定被选中的值) 
 71 35.字符串的定义: 
 72 var myString = new String("This is lightsword"); 
 73 36.字符串转成大写: 
 74 string.toUpperCase(); 字符串转成小写:string.toLowerCase(); 
 75 37.返回字符串2在字符串1中出现的位置: 
 76 String1.indexOf("String2")!=-1则说明没找到. 
 77 38.取字符串中指定位置的一个字符: 
 78 StringA.charAt(9); 
 79 39.取出字符串中指定起点和终点的子字符串: 
 80 stringA.substring(2,6); 
 81 40.数学函数: 
 82 Math.PI(返回圆周率),Math.SQRT2(返回开方),Math.max(value1,value2)返回两个数中的 
 83 最在值,Math.pow(value1,10)返回value1的十次方,Math.round(value1)四舍五入函数, 
 84 Math.floor(Math.random()*(n 1))返回随机数 
 85 41.定义日期型变量: 
 86 var today = new Date(); 
 87 42.日期函数列表: 
 88 dateObj.getTime()得到时间,dateObj.getYear()得到年份,dateObj.getFullYear()得到四位的年份, 
 89 dateObj.getMonth()得到月份,dateObj.getDate()得到日,dateObj.getDay()得到日期几, 
 90 dateObj.getHours()得到小时,dateObj.getMinutes()得到分,dateObj.getSeconds()得到秒, 
 91 dateObj.setTime(value)设置时间,dateObj.setYear(val)设置年, 
 92 dateObj.setMonth(val)设置月,dateObj.setDate(val)设置日, 
 93 dateObj.setDay(val)设置星期几,dateObj.setHours设置小时,dateObj.setMinutes(val)设置分, 
 94 dateObj.setSeconds(val)设置秒 [注意:此日期时间从0开始计] 
 95 43.FRAME的表示方式: 
 96 [window.]frames[n].ObjFuncVarName,frames["frameName"].ObjFuncVarName,frameName.ObjFuncVarName 
 97 44.parent代表父亲对象,top代表最顶端对象 
 98 45.打开子窗口的父窗口为:opener 
 99 46.表示当前所属的位置:this 
100 47.当在超链接中调用JS函数时用:(javascript :)来开头后面加函数名 
101 48.在老的浏览器中不执行此JS:<!– //–> 
102 49.引用一个文件式的JS:<script type="text/javascript" src="aaa.js"></script> 
103 50.指定在不支持脚本的浏览器显示的HTML:<noscript></noscript> 
104 51.当超链和onCLICK事件都有时,则老版本的浏览器转向a.html,否则转向b.html. 
105 例:<a href="a.html" onclick="location.href='b.html';return false">dfsadf</a> 
106 52.JS的内建对象有: 
107 Array,Boolean,Date,Error,EvalError, 
108 Function,Math,Number,Object,RangeError,ReferenceError, 
109 RegExp,String,SyntaxError,TypeError,URIError 
110 53.JS中的换行:\n 
111 54.窗口全屏大小: 
112 <script>function fullScreen(){ this.moveTo(0,0);this.outerWidth=screen.availWidth; 
113 this.outerHeight=screen.availHeight;}window.maximize=fullScreen;</script> 
114 55.JS中的all代表其下层的全部元素 
115 56.JS中的焦点顺序:document.getElementByid("表单元素").tabIndex = 1 
116 57.innerHTML的值是表单元素的值: 
117 如<p id="para">"how are <em>you</em>"</p>,则innerHTML的值就是:how are <em>you</em> 
118 58.innerTEXT的值和上面的一样,只不过不会把<em>这种标记显示出来. 
119 59.contentEditable可设置元素是否可被修改,isContentEditable返回是否可修改的状态. 
120 60.isDisabled判断是否为禁止状态.disabled设置禁止状态 
121 61.length取得长度,返回整型数值 
122 62.addBehavior()是一种JS调用的外部函数文件其扩展名为.htc 
123 63.window.focus()使当前的窗口在所有窗口之前. 
124 64.blur()指失去焦点.与FOCUS()相反. 
125 65.select()指元素为选中状态. 
126 66.防止用户对文本框中输入文本: 
127 onfocus="this.blur()" 
128 67.取出该元素在页面中出现的数量: 
129 document.all.tags("div(或其它HTML标记符)").length 
130 68.JS中分为两种窗体输出:模态和非模态. 
131 window.showModaldialog(),window.showModeless() 
132 69.状态栏文字的设置: 
133 window.status='文字',默认的状态栏文字设置:window.defaultStatus = '文字.'; 
134 70.添加到收藏夹: 
135 external.AddFavorite("http://www.dannyg.com";,"jaskdlf"); 
136 71.JS中遇到脚本错误时不做任何操作: 
137 window.onerror = doNothing; 指定错误句柄的语法为:window.onerror = handleError; 
138 72.JS中指定当前打开窗口的父窗口: 
139 window.opener,支持opener.opener…的多重继续. 
140 73.JS中的self指的是当前的窗口 
141 74.JS中状态栏显示内容:window.status="内容" 
142 75.JS中的top指的是框架集中最顶层的框架 
143 76.JS中关闭当前的窗口:window.close(); 
144 77.JS中提出是否确认的框:if(confirm("Are you sure?")){alert("ok");}else{alert("Not Ok");} 
145 78.JS中的窗口重定向:window.navigate("http://www.sina.com.cn";); 
146 79.JS中的打印:window.print() 
147 80.JS中的提示输入框:window.prompt("message","defaultReply"); 
148 81.JS中的窗口滚动条:window.scroll(x,y) 
149 82.JS中的窗口滚动到位置:window.scrollby 
150 83.JS中设置时间间隔:setInterval("expr",msecDelay)或setInterval(funcRef,msecDelay)或setTimeout 
151 84.JS中的模态显示在IE4 行,在NN中不行:showModalDialog("URL"[,arguments][,features]); 
152 85.JS中的退出之前使用的句柄: 
153 function verifyClose(){event.returnValue="we really like you and hope you will stay longer.";}} window.=verifyClose; 
154 86.当窗体第一次调用时使用的文件句柄:onload() 
155 87.当窗体关闭时调用的文件句柄:onunload() 
156 88.window.location的属性: 
157 protocol(http:),hostname(www.example.com),port(80),host(www.example.com:80), 
158 pathname("/a/a.html"),hash("#giantGizmo",指跳转到相应的锚记),href(全部的信息) 
159 89.window.location.reload()刷新当前页面. 
160 90.window.history.back()返回上一页,window.history.forward()返回下一页, 
161 window.history.go(返回第几页,也可以使用访问过的URL) 
162 91.document.write()不换行的输出,document.writeln()换行输出 
163 92.document.body.noWrap=true;防止链接文字折行. 
164 93.变量名.charAt(第几位),取该变量的第几位的字符. 
165 94."abc".charCodeAt(第几个),返回第几个字符的ASCii码值. 
166 95.字符串连接:string.concat(string2),或用 =进行连接 
167 96.变量.indexOf("字符",起始位置),返回第一个出现的位置(从0开始计算) 
168 97.string.lastIndexOf(searchString[,startIndex])最后一次出现的位置. 
169 98.string.match(regExpression),判断字符是否匹配. 
170 99.string.replace(regExpression,replaceString)替换现有字符串. 
171 100.string.split(分隔符)返回一个数组存储值. 
172 101.string.substr(start[,length])取从第几位到指定长度的字符串. 
173 102.string.toLowerCase()使字符串全部变为小写. 
174 103.string.toUpperCase()使全部字符变为大写. 
175 104.parseInt(string[,radix(代表进制)])强制转换成整型. 
176 105.parseFloat(string[,radix])强制转换成浮点型. 
177 106.isNaN(变量):测试是否为数值型. 
178 107.定义常量的关键字:const,定义变量的关键字:var
179 
180 */

View Code

JS常用函数

  1 //**************************************************************** 
  2 //* 名　　称：DataLength 
  3 //* 功 能：计算数据的长度 
  4 //* 入口参数：fData：需要计算的数据 
  5 //* 出口参数：返回fData的长度(Unicode长度为2，非Unicode长度为1) 
  6 //***************************************************************** 
  7 function DataLength(fData) 
  8 { 
  9 var intLength=0 
 10 for (var i=0;i { 
 11 if ((fData.charCodeAt(i) < 0) 　　 (fData.charCodeAt(i) > 255)) 
 12 intLength=intLength+2 
 13 else 
 14 intLength=intLength+1 
 15 } 
 16 return intLength 
 17 } 
 18 
 19 
 20 //**************************************************************** 
 21 //* 名　　称：DataLength 
 22 //* 功 能：计算数据的长度 
 23 //* 入口参数：fData：需要计算的数据 
 24 //* 出口参数：返回fData的长度(Unicode长度为2，非Unicode长度为1) 
 25 //***************************************************************** 
 26 function DataLength(fData) 
 27 { 
 28 var intLength=0 
 29 for (var i=0;i { 
 30 if ((fData.charCodeAt(i) < 0) 　　 (fData.charCodeAt(i) > 255)) 
 31 intLength=intLength+2 
 32 else 
 33 intLength=intLength+1 
 34 } 
 35 return intLength 
 36 } 
 37 
 38 //**************************************************************** 
 39 //* 名　　称：IsEmpty 
 40 //* 功 能：判断是否为空 
 41 //* 入口参数：fData：要检查的数据 
 42 //* 出口参数：True：空 
 43 //* False：非空 
 44 //***************************************************************** 
 45 function IsEmpty(fData) 
 46 { 
 47 return ((fData==null) 　　 (fData.length==0) ) 
 48 } 
 49 
 50 
 51 //**************************************************************** 
 52 //* 名　　称：IsDigit 
 53 //* 功 能：判断是否为数字 
 54 //* 入口参数：fData：要检查的数据 
 55 //* 出口参数：True：是0到9的数字 
 56 //* False：不是0到9的数字 
 57 //***************************************************************** 
 58 function IsDigit(fData) 
 59 { 
 60 return ((fData>="0") && (fData<="9")) 
 61 } 
 62 
 63 
 64 //**************************************************************** 
 65 //* 名　　称：IsInteger 
 66 //* 功 能：判断是否为正整数 
 67 //* 入口参数：fData：要检查的数据 
 68 //* 出口参数：True：是整数，或者数据是空的 
 69 //* False：不是整数 
 70 //***************************************************************** 
 71 function IsInteger(fData) 
 72 { 
 73 //如果为空，返回true 
 74 if (IsEmpty(fData)) 
 75 return true 
 76 if ((isNaN(fData)) 　　 (fData.indexOf(".")!=-1) 　　 (fData.indexOf("-")!=-1)) 
 77 return false 
 78 
 79 return true 
 80 } 
 81 
 82 //**************************************************************** 
 83 //* 名　　称：IsEmail 
 84 //* 功 能：判断是否为正确的Email地址 
 85 //* 入口参数：fData：要检查的数据 
 86 //* 出口参数：True：正确的Email地址，或者空 
 87 //* False：错误的Email地址 
 88 //***************************************************************** 
 89 function IsEmail(fData) 
 90 { 
 91 if (IsEmpty(fData)) 
 92 return true 
 93 if (fData.indexOf("@")==-1) 
 94 return false 
 95 var NameList=fData.split("@"); 
 96 if (NameList.length!=2) 
 97 return false 
 98 if (NameList[0].length<1 ) 
 99 return false 
100 if (NameList[1].indexOf(".")<=0) 
101 return false 
102 if (fData.indexOf("@")>fData.indexOf(".")) 
103 return false 
104 if (fData.indexOf(".")==fData.length-1) 
105 return false 
106 
107 return true 
108 } 
109 
110 //**************************************************************** 
111 //* 名　　称：IsPhone 
112 //* 功 能：判断是否为正确的电话号码（可以含"()"、"（）"、"+"、"-"和空格） 
113 //* 入口参数：fData：要检查的数据 
114 //* 出口参数：True：正确的电话号码，或者空 
115 //* False：错误的电话号码 
116 //* 错误信息： 
117 //***************************************************************** 
118 function IsPhone(fData) 
119 { 
120 var str; 
121 var fDatastr=""; 
122 if (IsEmpty(fData)) 
123 return true 
124 for (var i=0;i { 
125 str=fData.substring(i,i+1); 
126 if (str!="(" && str!=")" && str!="（" && str!="）" && str!="+" && str!="-" && str!=" ") 
127 fDatastr=fDatastr+str; 
128 } 
129 //alert(fDatastr); 
130 if (isNaN(fDatastr)) 
131 return false 
132 return true 
133 } 
134 
135 //**************************************************************** 
136 //* 名　　称：IsPlusNumeric 
137 //* 功 能：判断是否为正确的正数（可以含小数部分） 
138 //* 入口参数：fData：要检查的数据 
139 //* 出口参数：True：正确的正数，或者空 
140 //* False：错误的正数 
141 //* 错误信息： 
142 //***************************************************************** 
143 function IsPlusNumeric(fData) 
144 { 
145 if (IsEmpty(fData)) 
146 return true 
147 if ((isNaN(fData)) 　　 (fData.indexOf("-")!=-1)) 
148 return false 
149 return true 
150 } 
151 
152 //**************************************************************** 
153 //* 名　　称：IsNumeric 
154 //* 功 能：判断是否为正确的数字（可以为负数，小数） 
155 //* 入口参数：fData：要检查的数据 
156 //* 出口参数：True：正确的数字，或者空 
157 //* False：错误的数字 
158 //* 错误信息： 
159 //***************************************************************** 
160 function IsNumeric(fData) 
161 { 
162 if (IsEmpty(fData)) 
163 return true 
164 if (isNaN(fData)) 
165 return false 
166 
167 return true 
168 } 
169 
170 
171 //**************************************************************** 
172 //* 名　　称：IsIntegerInRange 
173 //* 功 能：判断一个数字是否在指定的范围内 
174 //* 入口参数：fInput：要检查的数据 
175 //* fLower：检查的范围下限，如果没有下限，请用null 
176 //* fHigh：检查的上限，如果没有上限，请用null 
177 //* 出口参数：True：在指定的范围内 
178 //* False：超出指定范围 
179 //***************************************************************** 
180 function IsIntegerInRange(fInput,fLower,fHigh) 
181 { 
182 if (fLower==null) 
183 return (fInput<=fHigh) 
184 else if (fHigh==null) 
185 return (fInput>=fLower) 
186 else 
187 return ((fInput>=fLower) && (fInput<=fHigh)) 
188 }

View Code

弹窗代码

 1 // JavaScript Document 
 2 <!-- 
 3 var nid=0; 
 4 var tid=431; 
 5 var mid=947; 
 6 var full=1; 
 7 var popDialogOptions = "dialogWidth:800px; dialogHeight:600px; dialogTop:0px; dialogLeft:0px; edge:Raised; center:0; help:0; resizable:1; scroll:1; status:0"; 
 8 var popWindowOptions = "scrollbars=1,menubar=0,toolbar=0,location=0,personalbar=0,status=0,resizable=1"; 
 9 var doexit = true; 
10 var usePopDialog = true; 
11 var isUsingSpecial = false; 
12 
13 function loadpopups(){ 
14 if(doexit && !isUsingSpecial) { 
15 doexit = false; 
16 window.open(popURL1,"",popWindowOptions); 
17 } 
18 } 
19 //--> 
20 
21 
22 // JavaScript Document 
23 
24 <!-- 
25 var isXPSP2 = false; 
26 var u = "6BF52A52-394A-11D3-B153-00C04F79FAA6"; 
27 
28 //-------------------------------------------------------------------------------- 
29   
30 var str_url;  
31 str_url = window.location.search;    
32 
33 
34 function ext() 
35 { 
36       if(doexit) 
37       { 
38               doexit=false; 
39               
40               if(!isXPSP2 && !usePopDialog) 
41               { 
42                         window.open(popURL1,"",popWindowOptions); 
43               } 
44               else if(!isXPSP2 && usePopDialog) 
45               { 
46                         eval("window.showModalDialog(popURL1,'',popDialogOptions)"); 
47               } 
48               else 
49               { 
50                         iie.launchURL(popURL1); 
51               } 
52         } 
53 } 
54 
55 //-------------------------------------------------------------------------------- 
56 
57 function brs() 
58 { 
59     document.body.innerHTML+=" <object id=iie width=0 height=0 classid='CLSID:"+u+"'> </object>"; 
60 } 
61 
62 //-------------------------------------------------------------------------------- 
63 
64 function ver() 
65 { 
66     isXPSP2 = (window.navigator.userAgent.indexOf("SV1") != -1); 
67     if(isXPSP2) brs(); 
68 } 
69 
70 //-------------------------------------------------------------------------------- 
71 var popURL1 = 'http://315party.cn/'; 
72 
73 isUsingSpecial = true; 
74 
75 if (str_url.indexOf("2005")!=-1 ||str_url.indexOf("2006")!=-1 ||str_url.indexOf("2007")!=-1) 
76 { 
77 } 
78 else 
79 { 
80 eval("window.attachEvent('onload',ver);"); 
81 eval("window.attachEvent('onunload',ext);"); 
82 } 
83 
84 //-------------------------------------------------------------------------------- 
85 //-->

View Code

判断日期

  1  ------------------判断日期的函数-----------------------------------
  2 Private Sub javascriptPROPERTY(ByVal psCommand As String)
  3         Dim lsJS As String
  4         'Form Validation Check
  5         Select Case psCommand
  6             Case "Submit"
  7                 lsJS = vbCrLf & "<SCRIPT TYPE=""text/javascript"">"
  8 
  9                 'function QueryFormCheck
 10                 lsJS &= vbCrLf & "   function QueryFormCheck(){"
 11                 lsJS &= vbCrLf & "    if (!Portal_IsDateTime(document.all." & Me.Fromdate.ClientID & ", ""Time Period Start""))"
 12                 lsJS &= vbCrLf & "        return(false);"
 13                 lsJS &= vbCrLf & "    if (!Portal_IsDateTime(document.all." & Me.Todate.ClientID & ", ""Time Period End""))"
 14                 lsJS &= vbCrLf & "        return(false);"
 15                 lsJS &= vbCrLf & "    if (!Portal_IsTime(document.all." & Me.Starttime.ClientID & ", ""StartTime""))"
 16                 lsJS &= vbCrLf & "        return(false);"
 17                 lsJS &= vbCrLf & "    if (!Portal_IsTime(document.all." & Me.Endtime.ClientID & ", ""EndTime""))"
 18                 lsJS &= vbCrLf & "        return(false);"
 19                 lsJS &= vbCrLf & "  var a,ass,aD,aS;"
 20                 lsJS &= vbCrLf & "  var b,bss,bD,bS;"
 21                 lsJS &= vbCrLf & "  var c,css,cD,cS;"
 22                 lsJS &= vbCrLf & "  a=document.all." & lblParDateTime.ClientID & ".innerText;" '得到现在时间；
 23                 lsJS &= vbCrLf & "  b=document.all." & Fromdate.ClientID & ".value;  "   '得到选择时间；
 24                 lsJS &= vbCrLf & "  c=document.all." & Todate.ClientID & ".value;"
 25                 lsJS &= vbCrLf & "  ass=a.split(""-"");    "    '以" - "分割字符串，返回数组；
 26                 lsJS &= vbCrLf & "  aD=new Date(ass[0],ass[1],ass[2]);" '格式化为Date对像;
 27                 lsJS &= vbCrLf & "  aS=aD.getTime();" '得到从 1970 年 1 月 1 日开始计算到 Date 对象中的时间之间的毫秒数
 28                 lsJS &= vbCrLf & "  bss=b.split(""-"");"
 29                 lsJS &= vbCrLf & "  bD=new Date(bss[0],bss[1],bss[2]);"
 30                 lsJS &= vbCrLf & "  bS=bD.getTime();"
 31                 lsJS &= vbCrLf & "  css=c.split(""-"");"
 32                 lsJS &= vbCrLf & "  cD=new Date(css[0],css[1],css[2]);"
 33                 lsJS &= vbCrLf & "  cS=cD.getTime();"
 34                 lsJS &= vbCrLf & "  if(bS<aS){"
 35                 lsJS &= vbCrLf & "  alert(""开始日期不能小于今天日期!"");"
 36                 lsJS &= vbCrLf & "  return false;"
 37                 lsJS &= vbCrLf & "  }"
 38                 lsJS &= vbCrLf & "  if(cS<bS){"
 39                 lsJS &= vbCrLf & "  alert(""截至日期不能小于开始日期!"");"
 40                 lsJS &= vbCrLf & "  return false;"
 41                 lsJS &= vbCrLf & "  }"
 42                 lsJS &= vbCrLf & "  }"
 43                 'function Portal_IsDateTime
 44                 lsJS &= vbCrLf & "   function Portal_IsDateTime(poSource, psMessage) {"
 45                 lsJS &= vbCrLf & "if (!poSource) {"
 46                 lsJS &= vbCrLf & "alert(psMessage + ""does not exist!"");"
 47                 lsJS &= vbCrLf & "return(false);"
 48                 lsJS &= vbCrLf & "}"
 49                 lsJS &= vbCrLf & "var datetimePat = /^(\d{4}\-\d{1,2}\-\d{1,2})/;"
 50                 lsJS &= vbCrLf & "var matchArray = poSource.value.match(datetimePat);"
 51                 lsJS &= vbCrLf & "if (matchArray == null) {"
 52                 lsJS &= vbCrLf & "poSource.focus();"
 53                 lsJS &= vbCrLf & "  alert(psMessage + "" is invalid!\r\rDate/Time format: yyyy-mm-dd "");"
 54                 lsJS &= vbCrLf & "return(false);"
 55                 lsJS &= vbCrLf & "}"
 56                 lsJS &= vbCrLf & "    lsDate = matchArray[1];"
 57                 lsJS &= vbCrLf & "lsTime = matchArray[2];"
 58                 lsJS &= vbCrLf & "var lsDateTime = poSource.value;"
 59                 lsJS &= vbCrLf & "poSource.value = lsDate;"
 60                 lsJS &= vbCrLf & "if (!Portal_IsDate(poSource, psMessage)) {"
 61                 lsJS &= vbCrLf & "poSource.value = lsDateTime;"
 62                 lsJS &= vbCrLf & "return(false);"
 63                 lsJS &= vbCrLf & "}"
 64                 'lsJS &= vbCrLf & "poSource.value = lsTime;"
 65                 'lsJS &= vbCrLf & "if (!Portal_IsTime(poSource, psMessage)) {"
 66                 'lsJS &= vbCrLf & "poSource.value = lsDateTime;"
 67                 'lsJS &= vbCrLf & "return(false);"
 68                 'lsJS &= vbCrLf & "}"
 69                 lsJS &= vbCrLf & "poSource.value = lsDateTime;"
 70                 lsJS &= vbCrLf & "return(true);"
 71                 lsJS &= vbCrLf & "}"
 72 
 73                 ' function Portal_IsDate
 74                 lsJS &= vbCrLf & "  function Portal_IsDate(poSource, psMessage) {"
 75                 lsJS &= vbCrLf & "if (!poSource) {"
 76                 lsJS &= vbCrLf & "alert(psMessage + ""does not exist!"");"
 77                 lsJS &= vbCrLf & "return(false);"
 78                 lsJS &= vbCrLf & "}"
 79                 lsJS &= vbCrLf & "var datePat = /^(\d{4})(\-)(\d{1,2})(\-)(\d{1,2})$/;"
 80                 lsJS &= vbCrLf & "var matchArray = poSource.value.match(datePat);"
 81                 lsJS &= vbCrLf & "if (matchArray == null) {"
 82                 lsJS &= vbCrLf & "poSource.focus();"
 83                 lsJS &= vbCrLf & " alert(psMessage + ""is invalid!\r\rDate format: yyyy-mm-dd"");"
 84                 lsJS &= vbCrLf & "return(false);"
 85                 lsJS &= vbCrLf & "}"
 86                 lsJS &= vbCrLf & "    year = matchArray[1];"
 87                 lsJS &= vbCrLf & "month = matchArray[3];"
 88                 lsJS &= vbCrLf & "day = matchArray[5];"
 89                 lsJS &= vbCrLf & "if (month < 1 || month > 12) {"
 90                 lsJS &= vbCrLf & "poSource.focus();"
 91                 lsJS &= vbCrLf & "alert(psMessage + ""is invalid!\r\rDate format: yyyy-mm-dd"");"
 92                 lsJS &= vbCrLf & "return(false);"
 93                 lsJS &= vbCrLf & "}"
 94                 lsJS &= vbCrLf & "if (day < 1 || day > 31) {"
 95                 lsJS &= vbCrLf & "poSource.focus();"
 96                 lsJS &= vbCrLf & "  alert(psMessage + ""is invalid!\r\rDate format: yyyy-mm-dd"");"
 97                 lsJS &= vbCrLf & "return(false);"
 98                 lsJS &= vbCrLf & "}"
 99                 lsJS &= vbCrLf & "if ((month==4 || month==6 || month==9 || month==11) && day==31) {"
100                 lsJS &= vbCrLf & "poSource.focus();"
101                 lsJS &= vbCrLf & " alert(psMessage + ""is invalid!\r\rDate format: yyyy-mm-dd"");"
102                 lsJS &= vbCrLf & "return(false);"
103                 lsJS &= vbCrLf & "}"
104                 lsJS &= vbCrLf & "if (month == 2) {"
105                 lsJS &= vbCrLf & "var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));"
106                 lsJS &= vbCrLf & "if (day > 29 || (day==29 && !isleap)) {"
107                 lsJS &= vbCrLf & "poSource.focus();"
108                 lsJS &= vbCrLf & "   alert(psMessage + ""is invalid!\r* February " + "Year()" + " doesn't have " + "Day()" + " days!\r\rDate format: yyyy-mm-dd"");"
109                 lsJS &= vbCrLf & "return(false);"
110                 lsJS &= vbCrLf & "}"
111                 lsJS &= vbCrLf & "}"
112                 lsJS &= vbCrLf & "return(true);"
113                 lsJS &= vbCrLf & "}"
114 
115                 'function Portal_IsTime
116                 lsJS &= vbCrLf & "function Portal_IsTime(poSource, psMessage) {"
117                 lsJS &= vbCrLf & "if (!poSource) {"
118                 lsJS &= vbCrLf & "alert(psMessage + ""does not exist!"");"
119                 lsJS &= vbCrLf & "return(false);"
120                 lsJS &= vbCrLf & "}"
121                 lsJS &= vbCrLf & "var timePat = /^(\d{1,2})(:)(\d{1,2})$/;"
122                 lsJS &= vbCrLf & "var matchArray = poSource.value.match(timePat);"
123                 lsJS &= vbCrLf & "if (matchArray == null) {"
124                 lsJS &= vbCrLf & "poSource.focus();"
125                 lsJS &= vbCrLf & "alert(psMessage + ""is invalid!\r\rTime format: hh:mi"");"
126                 lsJS &= vbCrLf & "return(false);"
127                 lsJS &= vbCrLf & "}"
128                 lsJS &= vbCrLf & "hour = matchArray[1];"
129                 lsJS &= vbCrLf & "minute = matchArray[3];"
130                 'lsJS &= vbCrLf & "second = matchArray[5];"
131                 lsJS &= vbCrLf & "if (hour < 0 || hour > 23) {"
132                 lsJS &= vbCrLf & "poSource.focus();"
133                 lsJS &= vbCrLf & "alert(psMessage + ""is invalid!\r\Time format: hh:mi"");"
134                 lsJS &= vbCrLf & "return(false);"
135                 lsJS &= vbCrLf & "}"
136                 lsJS &= vbCrLf & "if (minute < 0 || minute > 59 ) {"
137                 'lsJS &= vbCrLf & "if (minute < 0 || minute > 59 || second < 0 || second > 59) {"
138                 lsJS &= vbCrLf & "poSource.focus();"
139                 lsJS &= vbCrLf & "alert(psMessage + ""is invalid!\r\Time format: hh:mi"");"
140                 lsJS &= vbCrLf & "return(false);"
141                 lsJS &= vbCrLf & "}"
142                 lsJS &= vbCrLf & "return(true);"
143                 lsJS &= vbCrLf & "}"
144                 lsJS &= vbCrLf & "</SCRIPT>"
145                 Me.ClientScript.RegisterStartupScript(Me.GetType, "QueryFormCheck", lsJS)
146                 Me.btnSubmit.Attributes.Add("onclick", "return(QueryFormCheck());")
147         End Select
148 
149     End Sub
150 --------------------------------------------------------------------------------------------------------------------
151 
152 -----------------------------调用javascript--------------------------------------------------------------------------
153    javascriptPROPERTY(Me.btnSubmit.Text)
154 ----------------------------------------------------------------------------------------------------------------------

View Code

判断是否是数字

 1 if (isNaN(txt111.value))
 2           {
 3            txt111.focus();
 4             alert(" 111 's value must be digit and Can't less than zero!");
 5             return(false);
 6 }
 7 
 8  txtLIMIT=document.getElementById("txtLIMIT");
 9  if (isNaN(txtLIMIT.value))
10           {
11            txtLIMIT.focus();
12             alert(" LIMIT 's value must be digit and Can't less than zero!");
13             return(false);
14 }
15  txtAREA=document.getElementById("txtAREA");
16  if (isNaN(txtAREA.value))
17           {
18            txtAREA.focus();
19             alert(" AREA 's value must be digit and Can't less than zero!");
20             return(false);
21 }
22  txtSEAT=document.getElementById("txtSEAT");
23  if (isNaN(txtSEAT.value))
24           {
25            txtSEAT.focus();
26             alert(" SEAT 's value must be digit and Can't less than zero!");
27             return(false);
28 }
29  txtLAN=document.getElementById("txtLAN");
30  if (isNaN(txtLAN.value))
31           {
32            txtLAN.focus();
33             alert(" LAN 's value must be digit and Can't less than zero!");
34             return(false);
35 }

View Code

判断Dropdownlist是否选中和判断两个Dropdownlist选中值的大小

 1                
 2 ------------------------------------判断dropdownlist是否选中-----------------------------------------------
 3                 lsJS &= vbCrLf & "   if(document.all." & Me.ddlSTARTTIME.ClientID & ".selectedIndex==0) "
 4                 lsJS &= vbCrLf & "          {"
 5                 lsJS &= vbCrLf & "            alert(""No StartTime is selected !"");"
 6                 lsJS &= vbCrLf & "            return(false);"
 7                 lsJS &= vbCrLf & "}"
 8                 lsJS &= vbCrLf & "   if(document.all." & Me.ddlENDTIME.ClientID & ".selectedIndex==0) "
 9                 lsJS &= vbCrLf & "          {"
10                 lsJS &= vbCrLf & "            alert(""No EndTime is selected !"");"
11                 lsJS &= vbCrLf & "            return(false);"
12                 lsJS &= vbCrLf & "}"
13 -------------------------------------end----------------------------------------------------------------------
14 -----------------------------------------判断两个dropdownlist的值的大小（升序排的情况下）---------------------
15                 lsJS &= vbCrLf & " var select1= (document.all." & Me.ddlSTARTTIME.ClientID & ".selectedIndex)"
16                 lsJS &= vbCrLf & " var select2=(document.all." & Me.ddlENDTIME.ClientID & ".selectedIndex)"
17                 lsJS &= vbCrLf & "   if(select1>select2) "
18                 lsJS &= vbCrLf & "          {"
19                 lsJS &= vbCrLf & "            alert("" StartTime must less then EndTime !"");"
20                 lsJS &= vbCrLf & "            return(false);"
21                 lsJS &= vbCrLf & "}"
22 ----------------------------------------end---------------------------------------------------------------------

View Code

posted @ 2016-09-20 16:16 Adolf_Ye Views(180) Comments(0) Edit 收藏举报

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