<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style type="text/css">
#wrap {
position: relative;
border: 1px solid #000;
width: 800px;
height: 500px;
}
#drog {
position: absolute;
left: 0;
top: 0;
width: 100px;
height: 100px;
background: red;
cursor: move;
}
</style>
</head>
<body>
<p id="wrap">
<p id="drog"></p>
</p>
<script type="text/javascript" src="startmove.js?1.1.10"></script>
<script type="text/javascript">
(function(){
var drog = document.querySelector('#drog');
/*
1.记录按下的时候的鼠标位置
2.记录按下的时候元素的位置
*/
drog.onmousedown = function(e){
var startElY = css(drog,"top");
var startElX = css(drog,"left");
var startMouseX = e.clientX;
var startMouseY = e.clientY;
/*
求出鼠标移动的距离，
操作元素也移动相应的距离
为了可以一直跟随，所以添加给document
*/
document.onmousemove = function(e){
var nowMouseX = e.clientX;
var nowMouseY = e.clientY;
var disX = nowMouseX - startMouseX;
var disY = nowMouseY - startMouseY;
var x = disX + startElX;
var y = disY + startElY;
css(drog,"left",x);
css(drog,"top",y);
};
document.onmouseup = function(){
document.onmousemove = null;
document.onmouseup = null;
};
};
})();
</script>
</body>
</html>以上就是一个小demo之“拖拽”效果的实现的详细内容，更多请关注php中文网其它相关文章！
每个人都需要一台速度更快、更稳定的 PC。随着时间的推移，垃圾文件、旧注册表数据和不必要的后台进程会占用资源并降低性能。幸运的是，许多工具可以让 Windows 保持平稳运行。
广告![ThinkPHP5快速开发企业站点[全程实录]](https://img.php.cn/upload/course/000/000/068/6253d918a3ce7278.png)
收藏
收藏
Copyright 2014-2025 https://www.php.cn/ All Rights Reserved | php.cn | 湘ICP备2023035733号
529
