<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
span{color: red;font-size: 13px;display: none;}
</style>
<script type="text/javascript">
</script>
</head>
<body>
<!-- <div id="box"></div> -->
<label for="">用户名：</label><input type="text" id="txt-name"><span id="tip-name">*用户名为8-12位数字字母</span><br>
<label for="">密码：</label><input type="passworld" id="txt-pwd"><span id="tip-pwd">*密码为6位数字</span><br>
<button>登录</button>
<script type="text/javascript">
var txtName=document.getElementById('txt-name');
var txtPwd=document.getElementById('txt-pwd');
var tipName=document.getElementById('tip-name');
var tipPwd=document.getElementById('tip-pwd');
//添加事件
txtName.onblur=function () {
var sName=txtName.value;
var p=/^[a-zA-Z]\w{7,11}$/;
if(!p.test(sName)){
tipName.style.display='inline-block';
}
};
txtPwd.onblur=function () {
var sPwd=txtPwd.value;
var p=/^\d{6}$/;
if(!p.test(sPwd)){
tipPwd.style.display='inline-block';
}
};
</script>
</body>
</html>表单校验的另一种方法
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转载自blog.csdn.net/weixin_44606660/article/details/87779653
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