Leetcode_Solutions_python3/1.html at master · fantastic-Feifei/Leetcode_Solutions_python3 · GitHub

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<!DOCTYPE html>
<html>

<body>

    <label for="username">用户名</label>
    <input type="text" name="username" id="username" onblur="checkUserName()" placeholder="请输入4-8位字符">
    <span id="usernameMsg"></span><br>
    <label for="password1">密码</label>
    <input type="password" name="password1" id="password1" placeholder="请输入密码"><br>
    <label for="password2">确认密码</label>
    <input type="password" name="password2" id="password2" placeholder="请输入确认密码" onblur="checkPassword()">
    <span id="passwordMsg"></span><br>
    <label for="age">年龄</label>
    <input type="number" name="age" id="age" placeholder="请输入年龄(0-120)" onblur="checkAge()">
    <span id="ageMsg"></span>
    <script>
        function checkUserName() {
            let name = document.getElementById("username").value;
            if (name.length < 4 || name.length > 8) {
                document.getElementById("usernameMsg").innerText = '请输入4-8位字符';
            } else {
                document.getElementById("usernameMsg").innerText = '';
            }
        }
        function checkPassword() {
            let pw1 = document.getElementById("password1").value;
            let pw2 = document.getElementById("password2").value;
            if (pw1 != pw2) {
                document.getElementById("passwordMsg").innerText = '密码与确认密码不一致';
            } else {
                document.getElementById("passwordMsg").innerText = '';
            }
        }
        function checkAge() {
            let age = document.getElementById("age").value;
            if (age < 0 || age > 120) {
                document.getElementById("ageMsg").innerText = '请输入合理的年龄';
            } else {
                document.getElementById("ageMsg").innerText = '';
            }
        }
    </script>
</body>

</html>