JS实现简单拖拽效果

时间：2021-05-26

本文实例为大家分享了JS实现拖拽效果的具体代码，供大家参考，具体内容如下

<!DOCTYPE html><html lang="en"><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><div id="wrap"><div id="drog"></div></div> <script type="text/javascript" src="startmove.js"></script><script type="text/javascript">(function(){var drog = document.querySelector('#drog');drog.onmousedown = function(e){var startElY = css(drog,"top");var startElX = css(drog,"left");var startMouseX = e.clientX;var startMouseY = e.clientY;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>

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