first commit

2024-09-27 02:06:13 +08:00
commit 852d94fbb9
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--- a/历届学生/zheng-yuqing/项目练习/上课项目/js案例/index.html
+++ b/历届学生/zheng-yuqing/项目练习/上课项目/js案例/index.html
@@ -0,0 +1,148 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>自定义右键菜单</title>
+    <link rel="stylesheet" href="http://at.alicdn.com/t/font_2223989_98p80aj9eus.css">
+    <link rel="stylesheet" href="./css/clear.css">
+    <link rel="stylesheet" href="./css/index.css">
+</head>
+
+<body>
+
+
+    <ul class="menu hidden">
+        <li>
+            <i class="iconfont icon-vue"></i>
+            <span>Vue 文档</span>
+        </li>
+        <li>
+            <i class="iconfont icon-react"></i>
+            <span>React 文档</span>
+        </li>
+        <li>
+            <i class="iconfont icon-angular"></i>
+            <span>Angular 文档</span>
+        </li>
+        <li>
+            <i class="iconfont icon-typescript"></i>
+            <span>Typescript 文档</span>
+        </li>
+        <li>
+            <i class="iconfont icon-shuaxin"></i>
+            <span>刷新</span>
+        </li>
+    </ul>
+
+</body>
+<script>
+
+
+    var body = $("body"),
+        menu = $(".menu");
+
+    var screenHeight = window.innerHeight,
+        screenWidth = window.innerWidth;
+
+    body.oncontextmenu = function (e) {
+        // 对象解构赋值
+        var { x, y } = e;
+
+        if ((screenHeight - y < 240) && (screenWidth - x < 180)) {
+            console.log("屏幕右下角");
+            menu.style = `
+                left: ${x - 180}px;
+                top: ${y - 240}px;
+            `
+
+            // 鼠标在屏幕最下面    
+        } else if (screenHeight - y < 240) {
+            console.log("鼠标在屏幕最下面");
+            menu.style = `
+                left: ${x}px;
+                top: ${y - 240}px;
+            `
+
+        // 屏幕最右边    
+        } else if (screenWidth - x < 180) {
+            console.log("屏幕最右边");
+            menu.style = `
+                left: ${x - 180}px;
+                top: ${y}px;
+            `
+
+        //  中间方向，空间足够的情况下直接显示
+        } else {
+            menu.style = `
+                left: ${x}px;
+                top: ${y}px;
+            `
+        }
+
+
+
+        menu.classList.remove("hidden")
+
+        // 阻止浏览器弹出默认菜单
+        return false;
+    }
+
+    // 当 body 区域被点击的时候，需要隐藏右键菜单
+    body.onclick = function (e) {
+        console.log("body被点击: ", e);
+        hiddenMenu()
+    }
+
+    // 菜单里面的li被点击的时候
+    _(".menu li").forEach((v, i) => {
+        v.onclick = (e) => {
+            // 阻止事件冒泡，从而触发父元素body上的点击事件
+            e.stopPropagation()
+            // 根据你点击的li标签跳转不同的页面
+            switch (i) {
+                case 0:
+                    open("https://cn.vuejs.org/")
+                    break;
+                case 1:
+                    open("https://react.docschina.org/")
+                    break;
+                case 2:
+                    open("https://angular.cn/")
+                    break;
+                case 3:
+                    open("https://www.tslang.cn/")
+                    break;
+                case 4:
+                    location.reload()
+                    break;
+
+                default:
+                    break;
+            }
+            hiddenMenu()
+        }
+    })
+
+    // 隐藏显示的右键菜单
+    function hiddenMenu() {
+        // 为menu菜单添加隐藏类名
+        menu.classList.add("hidden")
+
+    }
+
+    // 获取单个标签
+    function $(className) {
+        return document.querySelector(className)
+    }
+
+    // 获取多个标签
+    function _(className) {
+        return document.querySelectorAll(className)
+    }
+
+</script>
+
+</html>