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文章源地址：https://www.huhailong.vip/article/1764653112011841538
Demo效果演示地址
先看效果图
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需要注意的就是边界检测处理，到极端点击底部和右侧时如果不做处理会遮挡菜单，影响使用，我的解决方案是动态监测窗口的宽高，根据右击时的横纵坐标判断菜单的最终位置，如果 右击的纵坐标+菜单高度 >= 窗口高度 则将菜单显示的高度坐标定位菜单高度，防止下方遮挡，如果 右击的横坐标+菜单宽度 >= 窗口的宽度则菜单横坐标为窗口宽度减去两倍的窗口宽度，避免菜单遮挡。
完整代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>右键菜单</title>
<!-- 阿里图标 -->
<!-- <link rel="stylesheet" type="text/css" href="//at.alicdn.com/t/c/font_4453355_yizetjv4jeo.css" /> -->
<style>
html,
body {
margin: 0;
overflow: hidden;
width: 100%;
}
#test-area {
border: 1px solid black;
width: 100%;
height: 100vh;
background-color: #333333;
display: flex;
align-items: center;
justify-content: center;
}
.menu {
width: 200px;
display: flex;
flex-direction: column;
position: absolute;
border: 1px solid gray;
background-color: #333333;
color: white;
border-radius: 4px;
font-size: 14px;
}
.menu>ul {
list-style: none;
padding: 0;
margin: 0;
}
.menu>ul>li {
padding: 10px;
cursor: pointer;
}
.menu>ul>li:hover {
background-color: #1A6CE7;
}
hr {
margin: 0;
border: 1px solid gray;
}
.submenu {
padding: 0;
left: 200px;
margin-top: -32px;
position: absolute;
display: none;
}
.link {
display: flex;
align-items: center;
justify-content: space-between;
}
.iconfont {
font-size: 14px;
padding-right: 5px;
}
.tip {
font-size: 40px;
color: gray;
}
</style>
</head>
<body>
<!-- 右键点击测试区域 -->
<div id="test-area">
<div class="tip">
点击右键查看效果
</div>
</div>
<!-- 右键菜单1 -->
<div class="menu" id="right-menu" hidden>
<ul>
<li><i class="iconfont icon-chakan1"></i>查看详情</li>
<li><i class="iconfont icon-chakanziduan"></i>打开表字段提示</li>
<hr />
<li><i class="iconfont icon-chakansql"></i>在SQL编辑器查看数据</li>
<li><i class="iconfont icon-a-Property1shengchengshuju"></i>生成测试数据</li>
<li><i class="iconfont icon-jurassic_export-data"></i>导出数据</li>
<li><i class="iconfont icon-jurassic_import-data"></i>导入数据</li>
<li><i class="iconfont icon-shujuqianyi_huaban"></i>数据迁移</li>
<li><i class="iconfont icon-biaogeduibi"></i>表结构对比</li>
<hr />
<li id="generate-sql">
<div class="link">
<span><i class="iconfont icon-shengchengSQL"></i>生成SQL</span>
<span>></span>
</div>
<div class="submenu menu" id="right-menu2">
<ul>
<li>查找</li>
<li>插入</li>
<li>更新</li>
<li>删除</li>
<li>DDL</li>
</ul>
</div>
</li>
<li id="copy">
<div class="link">
<span><i class="iconfont icon-fuzhi"></i>复制</span>
<span>></span>
</div>
<div class="submenu menu" id="right-menu3">
<ul>
<li>Insert语句</li>
<li>CVS语句</li>
</ul>
</div>
</li>
<li><i class="iconfont icon-shanchu"></i>删除</li>
<li><i class="iconfont icon-zhongmingming"></i>重命名</li>
<hr />
<li><i class="iconfont icon-shuaxin"></i>刷新</li>
</ul>
</div>
<script>
//获取窗口内部大小
var width = window.innerWidth;
var height = window.innerHeight;
//用于重新计算窗口大小
window.addEventListener('resize', ()=>{
width = window.innerWidth;
height = window.innerHeight;
})
//默认隐藏右键菜单
hiddenRightMenu('right-menu');
document.getElementById("test-area").addEventListener('contextmenu', (e) => {
e.preventDefault(e); //覆盖原生右键事件
showRightMenu(e, 'right-menu'); //显示菜单
})
document.getElementById("test-area").addEventListener('click', (e) => {
hiddenRightMenu('right-menu');
})
function showRightMenu(e, id) {
var rightMenu = document.getElementById(id);
if(e.clientY + 520 >= height){
rightMenu.style.top = (height - 530) + "px";
}else{
rightMenu.style.top = e.clientY + "px";
}
if(e.clientX + 200 >= width){
rightMenu.style.left = (width - 400) + "px";
}else{
rightMenu.style.left = e.clientX + "px";
}
// rightMenu.style.left = e.clientX + "px";
// rightMenu.style.top = e.clientY + "px";
rightMenu.style.display = 'block';
}
function hiddenRightMenu(id) {
document.getElementById(id).style.display = 'none';
}
//二级菜单事件
document.getElementById('generate-sql').addEventListener('mouseover', (e) => {
document.getElementById('right-menu2').style.display = 'block';
})
document.getElementById('generate-sql').addEventListener('mouseout', (e) => {
document.getElementById('right-menu2').style.display = 'none';
})
document.getElementById('copy').addEventListener('mouseover', (e) => {
document.getElementById('right-menu3').style.display = 'block';
})
document.getElementById('copy').addEventListener('mouseout', (e) => {
document.getElementById('right-menu3').style.display = 'none';
})
</script>
</body>
</html>
