feat: 新增 web 前端实验 8

2025-12-09 09:11:22 +08:00
parent b791fb6d1e
commit 4fb88ea847
3 changed files with 160 additions and 1 deletions
--- a/Web/README.md
+++ b/Web/README.md
@@ -18,5 +18,6 @@
 ├── test4  # 实验4
 ├── test5  # 实验5
 ├── test6  # 实验6
-└── test7  # 实验7
+├── test7  # 实验7
+└── test8  # 实验8
 ```
--- a/Web/test8/check.html
+++ b/Web/test8/check.html
@@ -0,0 +1,115 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+    <style>
+        * {
+            margin: 0;
+            padding: 0;
+            box-sizing: border-box;
+        }
+
+        form {
+            width: 300px;
+            margin-left: 100px;
+            margin-top: 100px;
+        }
+
+        legend {
+            font-weight: bold;
+        }
+
+        input[type="text"],
+        input[type="password"] {
+            height: 30px;
+        }
+
+        .form-box {
+            margin: 20px;
+            text-align: center;
+        }
+
+        .form-box label {
+            display: inline-block;
+            width: 70px;
+            text-align: justify;
+            text-align-last: justify;
+        }
+
+        .form-box button,
+        input[type="reset"] {
+            width: 80px;
+            height: 40px;
+            border: none;
+        }
+
+        .form-box button {
+            background-color: #007bff;
+            color: aliceblue;
+        }
+    </style>
+</head>
+
+<body>
+    <form id="userForm" action="https://www.baidu.com" method="POST" autocomplete="off">
+        <fieldset>
+            <legend align="center">用户登录</legend>
+            <div class="form-box">
+                <label for="un">用户名：</label>
+                <input type="text" class="userName" id="un" name="userName">
+            </div>
+            <div class="form-box">
+                <label for="password">密 码：</label>
+                <input type="password" class="psw" id="password">
+            </div>
+            <div class="form-box">
+                <button type="submit">登录</button>
+                <input type="reset" value="重置"></input>
+            </div>
+        </fieldset>
+    </form>
+    <script>
+        const userForm = document.getElementById("userForm");
+
+        const userNameInput = document.getElementById("un");
+        const pwsInput = document.getElementsByClassName("psw")[0];
+
+        userNameInput.onblur = function () {
+            if (!this.value) {
+                this.value = "请输入用户名";
+                this.style.color = "rgb(255,0,0)"
+            }
+        }
+        userNameInput.onfocus = function () {
+            if (this.value === "请输入用户名") {
+                this.value = "";
+                this.style.color = "black";
+            }
+        }
+
+        userForm.addEventListener("submit", (e) => {
+            e.preventDefault();
+
+            const userNameInputVal = userNameInput.value.trim();
+            const pwsInputVal = pwsInput.value.trim();
+
+            if (!userNameInputVal) 
+                alert("用户名不能为空");
+            else if (!pwsInputVal) 
+                alert("密码不能为空");
+            else if (userNameInputVal.length < 6 || userNameInputVal.length > 10)
+                alert("用户名长度应在 6 到 10 个字符之间");
+            else if (pwsInputVal.length < 6 || pwsInputVal.length > 10)
+                alert("密码长度应在 6 到 10 个字符之间");
+            else {
+                alert("验证成功");
+                userForm.submit();
+            }
+        })
+    </script>
+</body>
+
+</html>
--- a/Web/test8/opreaArr.html
+++ b/Web/test8/opreaArr.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+</head>
+
+<body>
+    <h1 id="output"></h1>
+    <script>
+        const output = document.getElementById("output");
+
+        // 通过for循环创建一个包含1到20数字的数组numbers
+        let numbers = new Array();
+        for (let i = 1; i <= 20; i++) {
+            numbers.push(i);
+        }
+
+        // 定义doubleNumbers函数用于将数组元素乘以3，并返回新数组
+        const doubleNumbers = (a) => {
+            return a.map((value) => value * 3);
+        }
+
+        // 调用doubleNumbers函数，传入numbers数组，得到处理后的数组，并赋值给doubledoutput变量
+        const doubledOutput = doubleNumbers(numbers);
+
+        // 通过id获取页面上id为"output"的h1标签元素，并将其赋值给outputElement变量
+        output.innerHTML += "numbers: " + numbers + "<br/>";
+
+        // 定义一个函数displayOutput，用于将数组元素以字符串形式展示在h1标签中
+        const displayOutput = (a) => {
+            return a.join(" ");
+        }
+        output.innerHTML += "displayOutput(): " + displayOutput(numbers) + "<br/>";
+
+        // 将doubledoutput数组中的元素以字符串的形式显示在h1标签中
+        output.innerHTML += "doubledoutput: " + doubledOutput + "<br/>";
+    </script>
+</body>
+
+</html>