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JQuery阻止默认行为

2011-02-18 16:02:30| 分类： jQuery | 标签： |举报 |字号大中小订阅

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来源：http://sm0210.cn/post/500.html

<!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=utf-8" />
<title>JQuery阻止默认行为</title>
<script language="javascript" src="JS/jquery-1.3.1.js"></script>
<script language="javascript">
$(function(){
$("#sub").bind("click",function(event){
   var name=$("#username").val();
   if(name==""){
    $("#msg").html("<p>文本框的值不能为空</p>");
    event.preventDefault(); //阻止行为
   }
});
});
</script>
</head>

来源：http://sm0210.cn/post/500.html

-------------------------------------------------------------------------------------------------------------------

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<#-- 网易新闻广告 --> <#--右边模块结构--> <#--评论模块结构--> <#--引用模块结构--> <#--博主发起的投票-->

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JQuery阻止默认行为

如果文章对你有帮助，请把文章的右边和左下边的广告点击下，算是对我的小小帮助。Thank you！

或者如果您觉得此文有帮助，可以打赏点钱给我支付宝 sm0210@qq.com ，或扫描二维码

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