第五讲 操作表单

  说到表单、相信每一个编程人员都知道它的重要性变,它在用户与服务器中扮演的角色就是用户数据的传递者,它最直接与用户接触的。这一章主要要求大家掌握的就是如何使用JQuery做表单验证?现在就来看这些例子吧!

 实例1:
        <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<script type="text/javascript" src="jquery-1.4.1.js"></script>
<script type="text/javascript">
$(function(){
// 给必须输入的元素后面,追加“*”
$(".required").parent().append($("<b style='color:red'>*</b>"));
//元素获取焦点
$("input[name=txtname]").focus(function(){
//先删除
$(this).parent().children("span").remove();
//追加一个
$(this).parent().append($("<span>请输入有效的用户名(中文),长度为2-4之间!</span>"));
}).blur(function(){
//判断元素的值
var txtval = $(this).val();
//先删除
$(this).parent().children("span").remove();
//正则表达式
var regexp = /^[\u4e00-\u9fa5]{2,4}$/;
if(regexp.test(txtval)==false){
//追加一个
$(this).parent().append($("<span class='error' style='color:red'>您输入的用户名错误!</span>"));
}
else{
$(this).parent().append($("<span class='success' style='color:green'>恭喜你输入正确!</span>"));
}
});
$("input[type=submit]").click(function(){
//模拟一个失去焦点的事件
$(".required").trigger("blur");
if($(".error").size()==0){
return true;
}
return false;
});
});
</script>
<style type="text/css">
* {
font-size:12px;
}
</style>
</head>

<body>
<form id="form1" name="form1" method="post" action="">
  <table width="505" border="1">
    <tr>
      <td colspan="2">用户注册</td>
    </tr>
    <tr>
      <td width="115">用户名:</td>
      <td width="374"><label>
        <input type="text" name="txtname" class="required" />
      </label></td>
    </tr>
    <tr>
      <td>密码:</td>
      <td><input type="password" name="txtpwd" class="required"/></td>
    </tr>
    <tr>
      <td>确认密码:</td>
      <td><input type="password" name="txtpwd2" class="required"></td>
    </tr>
<tr>
      <td>Email:</td>
      <td><input type="text" name="txtemail" class="required" /></td>
    </tr>
    <tr>
      <td>地址:</td>
      <td><input type="text" name="txtaddress"  /></td>
    </tr>
    <tr>
      <td colspan="2"><label>
        <input type="submit" name="Submit" value="提交" />
        <input type="reset" name="Submit2" value="重置" />
      </label></td>
    </tr>
  </table>
  <p> var tid = setInterval(“函数()”,时间);</p>
  <p>clearInterval(tid);</p>
  <p>&nbsp;</p>
</form>
</body>
</html>
实例2:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>表单验证</title>
<script src="../jquery/jquery-1.7.2.js" type="text/javascript"></script>
<script type="text/javascript">
$(function(){
$("form :input.required").each(function(){
var $required=$("<strong class='high'>*</strong>");
$(this).parent().append($required);
});
$('form :input:text').blur(function(){
var $parent=$(this).parent();
$parent.find(".formtips").remove();
if($(this).is("#username")){
if(this.value==""||this.length<6){
var errorMsg="请输入至少6位的用户名";
$parent.append("<span class='formtips onError'>"+errorMsg+"</span>");
}else{
var okMsg="输入正确";
$parent.append("<span class='formtips onSuccess'>"+okMsg+"</span>");
}
}
if($(this).is("#email")){
if(this.value==""||(this.value!=""&&!/.+@.+\.[a-zA-Z]{2,4}$/.test(this.value))){
var errorMsg="请输入正确的E-Mail地址";
$parent.append("<span class='formtips onError'>"+errorMsg+"</span>");
}else{
var okMsg="输入正确";
$parent.append("<span class='formtips onSuccess'>"+okMsg+"</span>");
}
}
$(this).removeClass("focus");
}).keyup(function(){
$(this).triggerHandler("blur");
$(this).addClass("focus");
}).focus(function(){
$(this).triggerHandler("blur");
$(this).addClass("focus");
});
$("#send").click(function(){
$("form :input.required").trigger("blur");
var numError=$("form .onError").length;
if(numError){
return false;
}
alert("注册成功,密码已成功发到你的邮箱,请注意查收");
});
$("#res").click(function(){
$(".formtips").remove();
});
});
</script>
<style type="text/css">
body{
font:12px/19px Arial, Helvetica, sans-serif;
color:#666;
}
form div{
margin:5px 0;
}
.int label{
float:left;
width:100px;
text-align:right;
}
.int input{
padding:1px 1px;
border:1px solid #ccc;
height:16px;
}
.sub{
padding-left:100px;
}
.sub input{
margin-right:10px;
}
.formtips{
width:200px;
margin:2px;
padding:2px;
}
.onError{
background:#FFE0E9 url(images/onError.gif) no-repeat 0 center;
padding-left:25px;
}
.onSuccess{
background:#E9FBEB url(images/onCorrect.gif) no-repeat 0 center;
padding-left:25px;
}
.high{
color:red;
}
.focus{
border:1px s #f00;
background:#fcc;
}
</style>
</head>

<body>
<form method="post" action="">
<div class="input">
<label for="username">用户名:</label>
<input type="text" id="username" class="required" />
</div>
<div class="input">
<label for="email">邮箱:</label>
<input type="text" id="email" class="required" />
</div>
<div class="input">
<label for="personinfo">个人资料:</label>
<input type="text" id="personinfo" />
</div>
<div class="sub">
<input type="submit" value="提交" id="send" /><input type="reset" id="res" />
</div>
</form>
</body>
</html>

补充实例_ 不规则图形:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<style type="text/css">
.leftDiv {
position:relative;
width:300px;
height:80px;
border:1px #000000 solid;
border-right:none;
z-index:2;
background:#FFFFFF;
}
div{
float:left;
}
.rightDiv{
position:relative;
border:1px #000000 solid;
width:500px;
height:500px;
left:-1px;
z-index:1;
background:#FFFFFF;
}
</style>
</head>

<body>
<div class="leftDiv">
  <p>左边的div</p>
  <p>dsfdsf</p>
</div>
<div class="rightDiv">
  <p>右边大的div</p>
  <p>dfd</p>
  <p>dfd</p>
  <p>fd</p>
  <p>fd</p>
  <p>fdf</p>
  <p>df</p>
  <p>df</p>
  <p>df</p>
  <p>df</p>
  <p>df</p>
  <p>&nbsp;</p>
</div>
</body>
</html>

 

 

posted on 2012-11-05 09:48  somewhere!  阅读(185)  评论(0编辑  收藏  举报

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