鼠标拖拽效果

图片示例

{D07AE799-2E54-494D-86AF-B57715C83EB9}.png

代码演示

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    #box{
        position:absolute;
         width: 400px;
         height: 300px;
         background-color: aqua;
    }
</style>
<body>
    <div id="box"></div>
    <script>
        let box=document.getElementById("box")
        box.onmousedown=function(e){
            let offsetX=e.offsetY
            let offsetY=e.offsetY
            
    
        document.onmousemove=function(e2){
            let clientX=e2.clientX
            let clientY=e2.clientY
           
_left=clientX - offsetX
_top=clientY - offsetY

box.style.left = _left + "px"
box.style.top = _top + "px"
        }
        }
        document.onmouseup=function(){
            document.onmousemove = null
        }
    </script>
</body>
</html>

鼠标拖拽效果

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