窗口拖动 

<!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>窗口拖动</title>
    <style>
    .box{
        width: 300px;
        height: 300px;
        background: purple;
        position: absolute;
        top: 0;
        left: 0;
    }
    
    </style>
</head>
<body>
    <div class="box"></div>
</body>
</html>
<script>
    let box1=document.querySelector(".box");
    box1.onmousedown=function(event){
        let x0=event.offsetX;
        let y0=event.offsetY;
        box1.onmousemove=function(event){
            let x1=event.clientX;
            let y1=event.clientY;
            box1.style.left=x1-x0+"px";
            box1.style.top=y1-y0+"px";
        }
        box1.onmouseup=function(){
            box1.onmousemove=""
            box1.onmouseup=""
        }
    }
</script>

 

posted @ 2019-03-18 14:34  AloneInDefeat  阅读(112)  评论(0)    收藏  举报