<html>
<head>
<script language="JavaScript">
function checkMobile(input) {
var mobile_number = input.value;
var mobile_rule = /^(((13[0-9]{1})|(15[0-9]{1})|(18[0-9]{1}))+\d{8})$/;
var tip = document.getElementById("tip");
if(mobile_number.match(mobile_rule) == null){
tip.innerHTML = "请输入11位正确的手机号码！";
return false;
} else {
tip.innerHTML = "输入正确";
}
}
</script>
<style type="text/css">
#tip
{
font-size:15px;
color:red;
}
</style>
</head>
<body>
<b id="text">手机号码：</b><input type="text" onblur="checkMobile(this)" />
<span id="tip"></span>
</body>
</html>
