<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>jquery ajax</title>
<script type="text/javascript" src="public/js/jquery-2.2.3.min.js"></script>
</head>
<body>
<form action="">
<label>用户名：</label><span id="check_username">检测</span>
<input type="text" id="t_username" placeholder="请输入"/>
<hr/>
<label>邮箱：</label><span id="check_email">检测</span>
<input type="text" id="t_email" placeholder="请输入"/>
<hr/>
<label>手机：</label><span id="check_phone">检测</span>
<input type="text" id="t_phone" placeholder="请输入"/>
<hr/>
</form>
</body>
<script>
$(function () {
$("#check_username").click(function(){
var str = $("#t_username").val();
var ret = /^[a-zA-Z][a-zA-Z0-9_]{5,20}$/;
if(ret.test(str)){
alert('ok');
}else{
alert('wrong');
}
});
$("#check_email").click(function(){
var str = $("#t_email").val();
var ret = /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/;
if(ret.test(str)){
alert('ok');
}else{
alert('wrong');
}
});
$("#check_phone").click(function(){
var str = $("#t_phone").val();
var ret = /^[\d]{5,20}$/;
if(ret.test(str)){
alert('ok');
}else{
alert('wrong');
}
});
});
</script>
</html>
