17.JavaScript实现鼠标右键自定义菜单

JavaScript实现鼠标右键自定义菜单：

<!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>
        .area1 {
            width: 200px;
            height: 200px;
            border: 1px solid #ccc;
            float: left;
            background: #008c8c
        }

        .area2 {
            width: 200px;
            height: 200px;
            border: 1px solid #ccc;
            float: right;
            background: #008c8c
        }

        .contain-text {
            position: fixed;
            left: 300px;
            top: 300px;
            border: 1px solid #ccc;
            background:#fff;
            display: none;
            padding:10px;
            text-align:left;
        }

        .contain-text ul {
            list-style: none;
            margin:0;
            padding:0;
        }
    </style>
</head>

<body>
    <div class="area1">
    </div>
    <div class="area2">
    </div>

    <div class="contain-text">
        <ul>
            <li>菜单1</li>
            <li>菜单2</li>
            <li>菜单3</li>
            <li>菜单4</li>
            <li>菜单5</li>
            <li>菜单6</li>
            <li>菜单7</li>
            <li>菜单8</li>
            <li>菜单9</li>
            <li>菜单10</li>
        </ul>
    </div>
    <script>
        var div1 = document.querySelector(".area1");
        var div2 = document.querySelector(".area2");
        var menu = document.querySelector(".contain-text");//菜单
        //注册自定义鼠标右键菜单事件
        div1.oncontextmenu = div2.oncontextmenu = function (e) {
            e.preventDefault();
            menu.style.display = "block";
            console.log(e.clientX, e.clientY);
            menu.style.left = e.clientX + "px";
            menu.style.top = e.clientY + "px";
        }

        window.onmousedown = function(){
            menu.style.display = "none";
        }
    </script>
</body>

</html>

index.html

效果展示：

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