正则表达式
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>正则表达</title>
</head>
<body>
<div align="center">
<fieldset style="height:30%;width:30%;">
<legend align="center">javascript之正则表达</legend>
用户名：<input type="text" name="usme" id="usme" placeholder="4到16位（字母，数字，下划线，减号">
<input type="button" value="提交" onclick="usme()"><br>
身份证号：<input type="text" name="IDcard" id="IDcard" placeholder="请按标准形式输入">
<input type="button" value="提交" onclick="IDcard()"><br>
Email：<input type="text" name="Email" id="Email" placeholder="邮箱地址">
<input type="button" value="提交" onclick="Email()"><br>
密码：<input type="text" name="password" id="password" placeholder="请输入密码">
<input type="button" value="提交" onclick="password()">
</fieldset>
</div>
<script>
function usme()
{
var usme=document.getElementById("usme").value;
var UsME=/^[a-zA-Z0-9_-]{4,16}$/;
if(!UsME.test(usme)) {
alert("提交成功");
}
else {
alert("用户名格式错误");
}
}
function IDcard()
{
var IDcard=document.getElementById("IDcard").value;
var IDCard=/^[1-9]\d{5}(18|19|([23]\d))\d{2}((0[1-9])|(10|11|12))(([0-2][1-9])|10|20|30|31)\d{3}[0-9Xx]$/;
if(IDCard.test(IDcard)) {
alert("提交成功");
}
else {
alert("身份证号格式错误");
}
}
function Email()
{
var Email=document.getElementById("Email").value;
var EMAIL=/^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
if(EMAIL.test(Email)) {
alert("提交成功");
}
else {
alert("邮箱地址格式错误");
}
}
function password()
{
var password=document.getElementById("password").value;
var Password=/^.*(?=.{6,})(?=.*\d)(?=.*[A-Z])(?=.*[a-z])(?=.*[!@#$%^&*? ]).*$/;
if(Password.test(password)) {
alert("提交成功");
}
else {
alert("密码格式错误");
}
}
</script>
</body>
</html>
