效果主要是实现网页中内容模块的鼠标拖拽，主要代码如下:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>鼠标拖动事件操作</title>
<style>
#box {
position: absolute;
height: 300px;
width: 400px;
background-color: red;
}
</style>
</head>
<body>
<div id="box">广告</div>
<script>
let box = document.getElementById("box")
box.onmousedown = function (z) {
let offsetX = z.offsetX
let offsetY = z.offsetY
console.log(offsetX, "offsetX")
console.log(offsetY, "offsetY")
document.onmousemove = function (z2) {
let clientX = z2.clientX
let clientY = z2.clientY
console.log(clientX, "clientX")
console.log(clientY, "clientY")
_left = clientX - offsetX
_top = clientY - offsetY
console.log(_left, "left")
console.log(_top, "top")
if(_left < 0){
_left = 0
}
if(_top < 0){
_top = 0
}
if(_left > document.documentElement.clientWidth - box.offsetWidth){
_left = document.documentElement.clientWidth - box.offsetWidth
}
if(_top > document.documentElement.clientWidth - box.offsetWidth){
_top = document.documentElement.clientWidth - box.offsetWidth
}
box.style.left = _left + "px"
box.style.top = _top + "px"
}
}
document.onmouseup=function(){
document.onmousemove=null
}
</script>
</body>
</html>
图片效果如下：
屏幕截图 2025-03-27 200417.png
