jQuery form form validation plug-in (fieldValue) verification form

jQuery form form validation plug-in (fieldValue) verification form_jquery

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Release： 2016-05-16 15:18:27

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JQuery form form validation related knowledge is often used in projects. In fact, it is not complicated. Here is a piece of code to introduce to you the jQuery form form validation plug-in (fieldValue) related knowledge to verify the form. If you are interested Let’s study together with friends

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>jQuery form插件的使用--使用 fieldValue 方法校验表单.</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<script src="jquery-1.3.1.js" type="text/javascript"></script>
<script src="jquery.form.js" type="text/javascript"></script>
<script type="text/javascript"> 
$(document).ready(function() { 
$('#myForm').ajaxForm({ 
target: '#output1', // 用服务器返回的数据 更新 id为output1的内容.
beforeSubmit: validate // 提交前，验证
}); 
});
function validate(formData, jqForm, options) { 
// fieldValue 是表单插件的一个方法，它能找出表单中的元素的值，返回一个集合。
var usernameValue = $('input[name=name]').fieldValue(); 
var addressValue = $('input[name=address]').fieldValue(); 
if (!usernameValue[0] || !addressValue[0]) { 
alert('用户名和地址不能为空，自我介绍可以为空！'); 
return false; 
} 
var queryString = $.param(formData); //组装数据
//alert(queryString); //类似 ： name=1&add=2 
return true; 
}
</script> 
</head>
<body>
<h3> Demo 7 : jQuery form插件的使用--使用 fieldValue 方法校验表单. </h3>
<!-- demo1 -->
<form id="myForm" action="ajax2.jsp" method="post"> 
名称： <input type="text" name="name" id="name" /> <br/>
地址： <input type="text" name="address" id="address"/><br/> 
自我介绍： <textarea name="comment" id="comment" ></textarea> <br/>
<input type="submit" id="test" value="提交" /> <br/>
<div id="output1" ></div>
</form>
</body>
</html>

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