14-表单校验案例-案例效果和分析
15-表单校验案例-案例的实现
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>表单校验</title>
<link rel="stylesheet" href="css/style.css"></link>
</head>
<body>
<div class="login-form-wrap">
<h1>黑马程序员</h1>
<form class="login-form" action="#" id="regist" method="get" autocomplete="off">
<label>
<input type="text" id="username" name="username" placeholder="Username..." value="">
</label>
<label>
<input type="password" id="password" name="password" placeholder="Password..." value="">
</label>
<input type="submit" value="注册">
</form>
</div>
</body>
<script>
document.getElementById("regist").onsubmit = function() {
let username = document.getElementById("username").value;
let password = document.getElementById("password").value;
let reg1 = /^[a-zA-Z]{4,16}$/;
if(!reg1.test(username)) {
alert("用户名不符合规则，请输入4到16位的纯字母！");
return false;
}
let reg2 = /^[\d]{6}$/;
if(!reg2.test(password)) {
alert("密码不符合规则，请输入6位纯数字的密码！");
return false;
}
return true;
}
</script>
</html>
16-内置对象-内置对象的小结
内置对象是 JavaScript 提供的带有属性和方法的特殊数据类型。数字日期 Number Math Date字符串 String RegExp数组集合 Array Set Map结构化数据 JSON
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0.010, SQL:
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