第七章 使用对象
1.理解对象\属性和方法
<body bgcolor="green"> <script> document.write("页面背景颜色是:"+document.bgColor) document.write("页面前景颜色是:"+document.fgColor) </script> |
2.使用网页元素对象
<script> </script> <form name=form1> <textarea name=ta1>dfgfdgfdhfdhdfdfgdf</textarea> <input type=button value="选择文本" onclick=document.form1.ta1.select()> <input type=button value="显示文本" onclick=document.write(document.form1.ta1.value)> </form> |
3.使用子对象
<form name=form1> <input type=text name=text1 value=hello> </form> <script> document.form1.text1.value="gdfgfd" </script> <form name=form1> <input type=radio name=radio1>男 <input type=radio name=radio2>女 </script> <script> document.form1.radio1.checked=true </script> |
4.使用预定义对象
<script> str1="dgdfgdfgdfhf固定法固定法功夫攻打法" document.write(str1+"<br>") str2=str1.substr(5) document.write(str2+"<br>") document.write("输出圆的面积:"+Math.PI*Math.pow(5.0,2)) </script> |
5.创建新对象
<script> today=new Date() document.write("今天是"+(today.getMonth()+1)+"月"+today.getDate()+"日"+"<br>") document.write("现在是:"+today.toLocaleString()) </script> |
6.引用当前对象
<form name=form1> <input type=text name=text1 value="dgdgdfgfd" onclick=this.select()> </script> |
7.查看对象属性
<script> for(prop in window) {document.write("window."+prop+"="+window[prop]+"<br>");} for(prop2 in location) {document.write("location."+prop2+"="+location[prop]+"<br>");} </script> |
8.使用Array对象
<script> array=new Array(10) array[0]="bark" array[1]="apple" array[2]="nebula" array[3]="cookie" array[4]="technology" document.write("数组元素个数是"+array.Length+"<br>") document.write("用 join将数组合并"+array.join(" ")+"<br>") document.write(" 数组排序"+array.sort()) </script> |
9.使用 image 对象
<img src=**.gif alt="图片提示…." border=10> <script> document.write("图片提示是:"+document.images[0].alt+"<br>") document.write("图片边框大小是:"+document.images[0].broder) </script> |
10.预加载图像
<script> freddy=new Image() freddy.src=freddy.gif </script> <body onload=document.images[0].src=freddy.src> ,<img src="blank.gif"> </body> |
11.改变图像
<img src=freddy.gif><br> <form name=form1> <input type=button name=button1 value="改变图像" onclickd=document.images[0].src=dudjp.gif> </form> |
12.使用link和anchor对象
<a name=anchor1>锚点1<br> <a href=http://www.microsoft.com>Microsoft</a><br> <a href=http://www.sohu.com>sohu</a><br> <a href=http://www.sina.com.cn>sina</a><br> <script> document.write("本页面共有"+document.links.length+"链接"+"<br>") document.write("本页面共有"+document.anchors.length+"锚点"+"<br>") document.write("第一个链接协议是"+document.links[0].protocol+"<br>") document.write("第一个链接路径是"+document.links[0].pathnamel+"<br>") document.write("第一个链接href是"+document.links[0].hrefl+"<br>") </script> |
13.改变链接
<a href =http://www.microsoft.com>link</a> <form name=form1> <input type=button name=button1 value="改变链接" onclick=document.links[0].href=’http://www.sohu.com’> </form> |
14.使用history对象
<form name=form1> <input type=button name=button1 value="向后返回2页" onclick=window.history.go(-2)> </form> |
第八章 使用窗口
1.在浏览器的状态栏上显示文本
<body onload=window.status="欢迎光临我的站点"> <a href=http://www.sohu.com>sohu</a> </body> |
2.改变背景色
<script> document.bgColor="orange" </script> |
3.列举背景颜色
<body bgColor =green> <script> document.write("当前背景色是:"+document.bgColor) </script> </body> |
4.改变文本和链接颜色
<script> document.bgColor="orange" document.fgColor="blue" document.linkColor="red" </script> <h2>看看这段文本颜色</h2> <a href=http://www.sohu.com>sohu</a> </body> |
5.改变文档标题
<script> name="Mouse" document.title="welcome to "+name+"’s House" document.write(document.title) </script> |
6.显示修改日期
<script> document.write("本页面最后修改时间是"+document.lastModified) </script> |
7.查看当前文档的URL
<script> document.write("本页面的URL:"+document.URL) </script> |
8.查看引用页
<script> document.write("本页面的引用页是"+document.referrer) </script> |
9.打开新的浏览器窗口
<script> window.open("*.htm","title","width=200,height=400,resizable=yes") </script> |
10.关闭远程窗口
close.html:
<script> document.write("正文") </script> <form name=form1> <input type=button name=button1value="关闭" onclick=window.close()> </form> |
<script> window.open("close.html","romote","width=200,height=400,resizable=yes") </script> |
<script> document.write("正文") </script> <form name=form1> <input type=button value=打印 onclick=window.print()> </form> |
12.移动窗口
<form name=form1> |
13.改变窗口大小
<form name=form1> 水平方向<input type=text name=x value=200> 垂直方向<input type=text name=y value=500> <input type=button value="改变窗口大小到….."onclick=window.resizeTo(document.form1.x.value,document.form1.y.value)> </form> <form name=form1> 水平方向<input type=text name=x value=200> 垂直方向<input type=text name=y value=500> <input type=button value="改变窗口大小"onclick=window.resizeBy(document.form1.x.value,document.form1.y.value)> </form> |
14.用警告对话框通知用户
<script> window.alert("welcome") </script> |
15.用提示对话框接受输入
<script> name=window.prompt("输入姓名","姓名") document.write(" 欢迎您:"+name+"来到这里") </script> |
16.用确认对话框使用户做出决定
<script> like=window.confirm("你觉得好吗?") if(like==true) document.write("谢谢你的夸奖") else document.write("希望得到你的夸奖") </script> |
第九章 使用字符串
1.使用字符串对象
<script> mystring="gdgdfgfddddaaaaaaaaaaaabbbbbbbbbbbbbbbbbvbhg.<br>" document.write(mystring) document.write(mystring.bold()) document.write(mystring.toUpperCase()) </script> |
2.使用子字符串
<script> str1="fdsf 1111 gfdgfd dfdsf cccc dddd.<br>" document.write(str1) document.write(str1.substring(0,13)+"<br>") document.write(str1.substr (20,11)+"<br>") </script> |
3.连接字符串
<script> str1="may you find" str2="peace,happiness and prosperity.<br>" document.write(str1+"<br>") document.write(str2) document.write(str1.concat(str2)) document.write(str1+=str2) </script> |
4.格式化字符串变量
<script> str1="peace,happiness and prosperity.<br>" document.write(str1) document.write(str1.big()) document.write(str1.small()) document.write(str1.bold()) document.write(str1.italics()) document.write(str1.strike()) document.write(str1.fontsize(6)) document.write(str1.fontcolor(green)) </script> |
5.创建锚和链接
<script> str1="this is the bigginning of the page.<br>" str2="….<br>" str3="this is the end of the page .<br>" str4="link to the start<br>" str5="link to the end<br>" document.write(str1.anchor("start")) for(i=0;i<10;i++) document.write(str2); document.write(str3.anchor("end")) document.write(str4.link("#start")) document.write(str5.link("#end")) </script> |
6.确定字符串长度
<script> str1="this is the bigginning of the page." document.write(str1+"<br>") document.write( "字符串的长度是:"+str1.length) document.write("字符串全部大写是;"+str1.toUpperCase()) document.write("字符串全部小写是;"+str1.toLowerCase()) </script> |
7.在字符串内搜索
<script> str1="this is the end of the line.<br>" document.write(str1) document.write("字符end在字符串的位置是"+str1.search("end")) document.write("字符dog在字符串的位置是"+str1.search("dog")) </script> |
8.定位字符串中的字符
<script> str1="spring is a time for flowers and trees and baby bunnles<br>" document.write(str1) document.write("the index for the second word ‘and’ is"+str1.indexOf("and",30)) documednt.write("the last index of the word ‘and’ is "+str1.lastIndexOf("and")) </script> |
9.替换字符串中的文本
<script> str1="spring is a time for flowers and trees and baby bunnles<br>" document.write(str1) document .write(str1.replace("and",",")) </script> |
10.字符串分离
<script> str1="spring is a time for flowers and trees and baby bunnles<br>" document.write(str1) str1array=str1.split(" ") document.write(str1array[0]+"<br>") document.write(str1array[1]+"<br>") document.write(str1array[2]+"<br>") document.write(str1array[3]+"<br>") </script> |
第十章 使用日期和时间
1.使用Date对象
<script> cdate=new Date("august 2,1989 12:30:00") document.write(cdate) </script> |
2.显示当地时间和日期
<script> cdate=new Date() document.write("当前时间是:"+cdate.toGMTString()+"<br>") document.write("日期和时间是:"+cdate.toLocaleString()) </script> |
3.获得时间和日期值
<script> cdate=new Date() document.write("显示当前的星期"+cdate.getDay()+"<br>") document.write("显示当前的月份"+cdate.getMonth()+"<br>") document.write("显示当前的日期"+cdate.getDay()+"<br>") document.write("显示当前的年份"+cdate.getYear()+"<br>") document.write("显示当前的小时"+cdate.getHours()+"<br>") document.write("显示当前的分钟"+cdate.getMinutes()+"<br>") document.write("显示当前的秒"+cdate.getSeconds()+"<br>") </script> |
4.设置时间和日期值
<script language=javascript> cdate=new Date("December 25,1984") document.write("显示日期"+cdate+"<br>") document.write("设置月份"+cdate.setMonth(10)+"<br>") document.write("设置日期"+cdate.setDate(23)+"<br>") document.write("设置年份"+cdate.setYear(2000)+"<br>") document.write("设置小时"+cdate.setHours(13)+"<br>"); document.write("设置分钟"+cdate.setMinutes(47)+"<br>"); document.write("设置秒"+cdate.setSeconds(23)+"<br>"); document.write("显示设置后的日期和时间"+cdate); </script> |
第十一章 使用Math对象
1. 使用Math对象
<script language=javascript> </script> <form name=form1> 圆的半径:<input type=text name=rad><br> 圆的面积:<input type=text name=area><br> <input type=button name=button1 value=计算圆的面积 onclick=document.form1.area.value=document.form1.rad.value*document. form1.rad.value*Math.PI> </form> |
2.生成随机数
<script> array1=new Array( "这是第1句", "这是第2句", "这是第3句", "这是第4句", "这是第5句", "这是第6句") RandomNo=Math.floor(array1.length*Math.random()) document.write("随机输出某一句"+"<br>"+array1[RandomNo]) </script> |
3.使用平方根
<form name=form1> value:<input type=text name=va1><br> 平方根<input type=text name=sqrt><br> <input type=button name=button1 value=计算平方根 onclick="document.form1.sqrt.value=Math.sqrt(document.form1.va1.value)"> </form> |
4.数字的舍入
<form name=form1> 输入<input type=text name=val><br> 舍入的结果<input type=text name=round><br> <input type=button name=button1 value=计算结果 onclick=document.form1.round.value=Math.round(document.form1.val.value)> </form> |
5.乘方运算
<form name=form1> 底数<input type=text name=val><br> 指数<input type=text name=power><br> 幂<input type=text name=result><br> <input type=button name=button1 value=计算结果 onclick="document.form1.result.value=Math.pow (document.form1.val.value,document.form1.power.value)"> </form> |
6.发现最小值和最大值
<form name=form1> 数字1<input type=text name=val1><br> 数字2<input type=text name=val2><br> 最小值<input type=text name=min><br> 最大值<input type=text name=max><br> 数字1<input type=button value=计算 onclick="document.form1.min.value=Math.min (document.form1.val1.value,document.form1.val2.value);document.form1. max.value= Math.max(document.form1.val1.value,document.form1.val2.value)"> </form> |
第十二章 使用表单
1.使用文本框
<form name=form1> <input type=text value="information ,please"name=text1> </form> <script> document.write("表单text1类型是: "+document.form1.text1.type+"<br>") document.write("表单text1名称是: "+document.form1.text1.name+"<br>") document.write("表单text1值是: "+document.form1.text1.value+"<br>") document.write("表单text1大小是: "+document.form1.text1.size+"<br>") </script> <form name=form1> <input type=text name=text1 value=click here onfocus=document.form1.text1.select()> </form> |
2.使用密码框
<form name=form1> <input type=password name=pw1 value=daylight> </form> <script> document.write("表单pw1的类型:"+document.form1.pw1.type+"<br>") document.write("表单pw1的名称:"+document.form1.pw1.name+"<br>") document.write("表单pw1的值:"+document.form1.pw1.value+"<br>") document.write("表单pw1的大小:"+document.form1.pw1.size+"<br>") </script> |
3.使用隐藏字段
<form name=form1> <input type=hidden name=hid1 value=piece of eight> </form> <script> document.write("表单hid1的类型:"+document.form1.hid1.type+"<br>") document.write("表单hid1的名称:"+document.form1.hid1.name+"<br>") document.write("表单hid1的值:"+document.form1.hid1.value+"<br>") </script> |
4.使用文本区域框
<form name=form1> <textarea name=ta1>how many grains of sand are there in the sahara desert?</textarea> </form> <script> document.write("表单ta1的类型:"+document.form1.ta1.type+"<br>") document.write("表单ta1的名称:"+document.form1.ta1.name+"<br>") document.write("表单ta1的值:"+document.form1.ta1.value+"<br>") document.write("表单ta1的横向宽度:"+document.form1.ta1.cols+"<br>") document.write("表单ta1的纵向宽度:"+document.form1.rows.value+"<br>") </script> <form name=form1> <textarea name=ta1 rows=4 onfocus="document.form1.ta1.select()"> how many grains of sand are there in the sahara desert?</textarea> </form> |
5.使用按钮
<form name=form1> <input type=button name=button1 value=标准按钮> </form> <script> document.write("表单button1的类型:"+document.form1.button1.type+"<br>") document.write("表单button1的名称:"+document.form1.button1.name+"<br>") document.write("表单button1的值:"+document.form1.button1.value+"<br>") </script> <form name=form1> <input type=text name=text1 size=45><br> <input type=button name=button1 value=panic button onclick="document.form1.text1.value=’sittle down,count to 10 and take a deep breath’"> </form> |
6.使用重置按钮
<form name=form1> <input type=reset name=reset1 value="rest form"> </form> <script> document.write("表单reset1的类型:"+document.form1.reset1.type+"<br>") document.write("表单reset1的名称:"+document.form1.reset1.name+"<br>") document.write("表单reset1的值:"+document.form1.reset1.value+"<br>") </script> |
7.使用提交按钮
<form name=form1> <input type=submit name=submit1 value="submit form"> </form> <script> document.write("表单submit1的类型:"+document.form1.submit1.type+"<br>") document.write("表单submit1的名称:"+document.form1.submit1.name+"<br>") document.write("表单submit1的值:"+document.form1.submit1.value+"<br>") </script> |
8.使用复选按钮
<form name=form1> <input type=checkbox name=cb1 >computer savvy? </form> <script> document.write("表单cb1的类型:"+document.form1.cb1.type+"<br>") document.write("表单cb1是否被选择?:"+document.form1.cb1.checked+"<br>") document.write("表单cb1的名称:"+document.form1.cb1.name+"<br>") </script> |
9.使用单选按钮
<form name=form1> <input type=radio name=radio1>male <input type=radio name=radio1>female </form> <script> document.write("第一个按钮被选择"+document.form1.radio1[0].checked+"<br>") document.write("第二个按钮被选择"+document.form1.radio1[1].checked+"<br>") document.write("按钮的名称"+ document.form1.radio1[0].name+"<br>") document.write("按钮的个数"+document.form1.radio1.length) </script> |
10.使用选择列表
<form name=form1> <select name=select1 size=4> <option name=option1 value=lon>london,England</option> <option name=option2 value=dub>Dublin,Ireland</option> </select> </form> <script> document.write("这个选择列表的名称"+document.form1.select1.name+"<br>") document.write("这个选择列表的长度"+document.form1.select1.length+"<br>") document.write("这个选择列表当前被选择的索引号"+document.form1.select1.selectedIndex+"<br>") document.write("这个选择列表的尺寸"+document.form1.select1.size+"<br>") </script> |
11.验证表单的有效性
<script> function validate(){ if(document.form1.text1.value!=’1’||’2’||’3’||’4’){ alert("请输入1~4的整数") } } </script> <form name=form1> 请输入1~4的整数: <input type=text name=text1 size=4 onchange=validate()> </form> |
12.控制表单焦点
<form name=form1> <input type=text name=text1 value=where is you focus?><br> <input type=text name=text2 value=is there?><br> <input type=text name=text3 value=or maybe here?><br> <input type=button name=button1 value="text box #1" onclick=document.form1.text1.focus()><br> <input type=button name=button2 value="text box #2" onclick=document.form1.text2.focus()><br> <input type=button name=button3 value="text box #3" onclick=document.form1.text3.focus()><br> </form> |
第十三章 使用分栏
第十四章 使用navigator
1.使用navigator对象
<script> document.write("navigator对象的属性"+"<br>") document.write("appcodename:"+navigator.appCodeName+"<br>") document.write("appname::"+navigator.appName+"<br>") document.write("appversion:"+navigator.appVersion+"<br>") document.write("platform:"+navigator.platform+"<br>") document.write("userAgent:"+navigator.userAgent+"<br>") </script> <script> document.write("navigator对象的方法"+"<br>") document.write("javaEnabled():"+navigator.javaEnabled()) </script> |
2.检查用户的浏览器
<script> if(navigator.appName.indexOf("Microsoft")!=-1){ document.write("用户浏览器是微软的IE浏览器"+"<br>")} else if(navigator.appName.indexOf("Netscape")!=-1){ document.write("用户浏览器是netscape的netscape浏览器"+"<br>")} if(navigator.appVersion.indexOf("4.0")!=-1){ document.write("you are using a version 4.0compatible browser") } else{ document.write("this browser is not 4.0 compliant")} </script> |
3.检测用户的操作系统
<script> if (navigator.platform.indexOf("win32")!=-1){ document.write("you are using a computer running windows 95 or highter")} else{ document.write("this computer is not running windows 95 or higher")} </script> |
4.使用location对象
<script> document.write("location对象的属性"+"<br>") document.write("hash"+location.hash+"<br>") document.write("hostname"+location.hostname+"<br>") document.write("host"+location.host+"<br>") document.write("href"+location.href+"<br>") document.write("port"+location.port+"<br>") document.write("search"+location.search+"<br>") </script> |
重新加载网页
<form name=form1> <input type=button name=button1 value=重新加载本页 onclick=location.reload> </form> |
5.使用cookie
<script> finction makecookie(){ if(!document.cookie){ name=prompt("请输入你的姓名"); document.cookie="name="+name+";";} } </script> <body onload=makecookie()> <script> function makecookie(){ if(!document.cookie){ name=prompt("请输入你的姓名") document.cookie="name="+name+";"; namestart=document.cookie.indexOf("="); nameend=document.cookieindexOf(";"); document.writeln("your name is:"+document.cookie.substring(namestart+1,nameend)+",br>") } } </script> |