<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>自定义右键菜单</title>
<style>
div{width: 400px;height: 400px;background:cyan;}
ul{width: 80px;height: 100px;background: orange;position:absolute;display:none;}
</style>
<script>
window.onload =function(){
//阻止系统自带右键菜单
document.oncontextmenu = function(){
return false;
}
//自定义右键菜单
var oDiv = document.getElementById(‘div‘);
var oUl = document.getElementById(‘menu‘);
oDiv.onmousedown = function(ev){
//获取事件对象
var e = ev || window.event;
//判断按下的是否为右键
if(e.button == 2){
oUl.style.display = ‘block‘;
oUl.style.left = e.clientX+‘px‘;
oUl.style.top = e.clientY+‘px‘;
}else{//点击别的键时关闭自定义菜单
oUl.style.display = ‘none‘;
}
}
}
</script>
</head>
<body>
<div id="div"></div>
<ul id="menu">
<li>选项1</li>
<li>选项2</li>
<li>选项3</li>
</ul>
</body>
</html>
浏览器效果
原文：https://www.cnblogs.com/taohuaya/p/9597744.html