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form 提交 验证有关问题

WBOY
WBOYOriginal
2016-06-13 12:35:06727browse

form 提交 验证问题
比如

" method="GET" onsubmit="add()">
   input->get('call');?>" />

 



<script><br /> function add(){<br /> var call= $("#call").attr("value");<br /> if(call== ""){<br /> alert("NO");<br /> return false;<br /> }<br /> }<br /> <br /> </script>

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我的问题是,这样实现提交form 表单的时候先js 验证是否为空,然后在跳到后台去验证。
function url js php
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