$(document).ready(function(){
$("#frm1").submit(function(){
var key =$("#key_id").val();
if(key == ‘‘){
alert (‘XXXX空‘);
return false;
}
if(key.length != 17){
alert (‘XXX长度为17
return false;
}
});
//input设置大写 onkeyup="this.value=this.value.toUpperCase()"
<form action="{{ asset(‘backend/vin_detail‘) }}" method="get" id="frm1">
<table class="search_tab">
<tr>
vin码查询: <td><input type="text" name="keywords" id="key_id" onkeyup="this.value=this.value.toUpperCase()" ></td>
<td><input type="submit" name="sub" value="查询"></td>
</tr>
</table>
</form>
???????????????????????????????????jquery随笔记
原文地址：http://blog.51cto.com/kangjunfei/2058658