本文介绍了一种使用JavaScript实现的鼠标右键点击时显示弹窗的方法，并详细解释了如何根据不同的屏幕位置调整弹窗出现的位置以避免超出浏览器边界。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
.shi{
width:200px;
height:200px;
background:yellow;
box-shadow: #ccc 0px 0px 10px;
position:absolute;
display: none;
}
</style>
</head>
<body>
<div class="shi">
<p>若不是你突然闯进 我生活</p>
<p>我怎会把死守的寂寞 放任了</p>
</div>
<script>
window.oncontextmenu = function ()
{
return false;
}
document.onmousedown = function(e){
let mouse = document.querySelector('.shi');
let winHeight = document.documentElement.clientHeight; //////窗口高度
let winWidth = document.documentElement.clientWidth; //////窗口宽度
let mouseHeight = e.clientY; ////鼠标距离浏览器高度
let mouseLeft = e.clientX; /////鼠标距离浏览器左侧宽度
if(e.button == '2'){
mouse.style.display = 'block';
if(winHeight - mouseHeight < 200){
mouse.style.left = mouseLeft - 200 + 'px';
mouse.style.top = mouseHeight-200 + 'px';
}else if(winWidth - mouseLeft < 200){
mouse.style.top = mouseHeight + 'px';
mouse.style.left = mouseLeft - 200 + 'px'
}else if(winWidth - mouseLeft > 200){
mouse.style.left = mouseLeft+'px';
mouse.style.top = mouseHeight+'px';
}else if(mouseHeight > 0 && mouseHeight < 200){
mouse.style.left = mouseLeft - 200 + 'px';
mouse.style.top = mouseHeight - 200 + 'px';
}
}else{
console.log(winHeight,mouseHeight);
}
}
</script>
</body>
</html>
上下左右都不会有bug的点击弹窗
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