好代码要存起来：
<!DOCTYPE html> <!-- saved from url=(0063)https://weiqiyjjs.github.io/room/example/jsexample/divmove.html --> <html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>适配移动端的拖动效果</title> <style> #div1{ height: 1000px; } #div2{ position: absolute; top:0; left:0; width: 100px; height: 100px; background: #bbbbbb; } </style> </head> <body> <div id="div1"> <div id="div2"></div> </div> <script> var flag = false; var cur = { x:0, y:0 } var nx,ny,dx,dy,x,y ; function down(){ flag = true; var touch ; if(event.touches){ touch = event.touches[0]; }else { touch = event; } cur.x = touch.clientX; cur.y = touch.clientY; dx = div2.offsetLeft; dy = div2.offsetTop; } function move(){ if(flag){ var touch ; if(event.touches){ touch = event.touches[0]; }else { touch = event; } nx = touch.clientX - cur.x; ny = touch.clientY - cur.y; x = dx+nx; y = dy+ny; div2.style.left = x+"px"; div2.style.top = y +"px"; //阻止页面的滑动默认事件 document.addEventListener("touchmove",function(){ event.preventDefault(); },false); } } var div2 = document.getElementById("div2"); div2.addEventListener("mousedown",function(){ down(); },false); div2.addEventListener("touchstart",function(){ down(); },false) div2.addEventListener("mousemove",function(){ move(); },false); div2.addEventListener("touchmove",function(){ move(); },false) document.body.addEventListener("mouseup",function(){ flag = false; },false); div2.addEventListener("touchend",function(){ flag = false; },false) </script> </body> </html>
简单易用，就是这么任性。。。
ps:原文链接：http://blog.csdn.net/u014346301/article/details/53536714