Html自定义鼠标右键菜单

我们有时候在开发过程中会有自定义右键菜单，替换掉浏览器默认右键菜单的想法，那么如何实现呢？话不多说，上代码：

Html代码：

<!DOCTYPE html>
<html lang="zh">

<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>自定义鼠标右键菜单效果 - 梁先生哎</title>
    <link rel="shortcut icon" href="https://llyth.cn/img/favicon.ico" type="image/x-icon">
    <link rel="stylesheet" href="index.css">
</head>

<body>
    <div class="action_area" id="action_area">触发区域</div>

    <ul id="custom_menu">
        <li onclick="javascript:location.reload();">刷新</li>
        <li onclick="javascript:location.reload();">刷新</li>
        <li onclick="javascript:location.reload();">刷新</li>
        <li onclick="javascript:location.reload();">刷新</li>
    </ul>

    <script src="index.js"></script>
</body>

</html>

CSS代码：

* {
    margin: 0;
    padding: 0;
}

.action_area {
    width: 80%;
    height: 300px;
    margin: 0 auto;
    border: 1px solid black;
    margin-top: 200px;
    font-size: 8em;
    text-align: center;
    line-height: 300px;
}

#custom_menu {
    list-style: none;
    width: 150px;
    border: 1px solid #ccc;
    border-bottom: none;
    background-color: #fff;
    position: absolute;
    display: none;
}

#custom_menu li {
    border-bottom: 1px solid #ccc;
    padding: 5px 10px;
    cursor: pointer;
}

#custom_menu li:hover {
    background-color: #ccc;
}

JavaScript代码：

var custom_menu = document.getElementById("custom_menu");
var action_area = document.getElementById("action_area");
action_area.addEventListener("contextmenu", function (event) {
    event.preventDefault();
    custom_menu.style.display = "block";
    //获取鼠标视口位置
    custom_menu.style.top = event.clientY + "px";
    custom_menu.style.left = event.clientX + "px";
});

document.addEventListener("click", function(event){
    custom_menu.style.display = "none";
});