本文實例為大家分享了JS實現拖拽效果的具體代碼，供大家參考，具體內容如下
<!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');/*1.記錄按下的時候的鼠標位置2.記錄按下的時候元素的位置 */drog.onmousedown = function(e){var startElY = css(drog,"top");var startElX = css(drog,"left");var startMouseX = e.clientX;var startMouseY = e.clientY;/*求出鼠標移動的距離，操作元素也移動相應的距離為了可以一直跟隨，所以添加給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>以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持VeVb武林網。
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