How to achieve password consistency in validation forms in jQuery
This article mainly introduces jQuery's method of verifying form password consistency and regular expression verification of email and mobile phone number. It involves jQuery form element acquisition and regular verification related operation skills. Friends in need can refer to the following
The example in this article describes how jQuery implements the method of verifying the consistency of form passwords and verifying email and mobile phone numbers with regular expressions.
jQuery script
<script type="text/javascript">
function check_password() {
if ($("#password").val() != $("#checkPWD").val()){
alert("请保证两次输入密码的一致性！");
$("#checkPWD").focus();
}
}
function check_email() {
var reg = /\w+[@]{1}\w+[.]\w+/;
if (!reg.test($("#email").val())){
alert("请输入正确的email！");
$("#email").focus();
}
}
function check_phone() {
var reg = /^1[34578]\d{9}$/;
if (!reg.test($("#phone").val())){
alert("请输入正确的手机号！");
$("#phone").focus();
}
}
</script>html file
<!DOCTYPE html>
<html>
<head>
<script src="jquery1.3.2.js"></script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>注册界面</title>
</head>
<body>
<center>
<h1 id="用户注册">用户注册</h1>
<form action="" method="post">
<table width="400px" cellspacing="0px" cellpadding="0px" border="1px">
<tr>
<td>用户名</td>
<td><input type="text" name="username" placeholder="用户名为3-12位字母数字或下划线组合" ></td>
</tr>
<tr>
<td>密 码</td>
<td><input type="password" name="password" placeholder="密码长度为6-12位的纯数字" id="password"></td>
</tr>
<tr>
<td>确认密码</td>
<td><input type="password" name="checkPWD" placeholder="密码长度为6-12位的纯数字" id="checkPWD" onchange="check_password()"></td>
</tr>
<tr>
<td>手机号码</td>
<td><input type="text" name="phone" placeholder="请输入正确的手机号码格式" id="phone" onchange="check_phone()"></td>
</tr>
<tr>
<td>邮箱</td>
<td><input type="email" name="email" placeholder="请输入正确邮箱格式" id="email" onchange="check_email()" required="required"></td>
</tr>
<tr>
<td colspan="2" style="text-align:center">
<input type="submit" value="注册">
<input type="reset" value="重置">
</td>
</tr>
</table>
</form>
</center>
</body>
</html>Run result:
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