<!doctype html> <html> <head> <meta charset="utf-8"> <title>无标题文档</title> <style> #div1 {width:200px; height:200px; background:red; position:absolute; top:50px; left:0px;} </style> <script> var timer=null; function startMove() { var oDiv=document.getElementById(‘div1‘); clearInterval(timer); timer=setInterval(function () { var speed=1; if(oDiv.offsetLeft>=300) { clearInterval(timer); } else { oDiv.style.left=oDiv.offsetLeft+speed +‘px‘; } }, 30); } </script> </head> <body> <input id="btn1" type="button" value="开始运动" onclick="startMove()"/> <div id="div1"> </div> </body> </html>
原文：https://www.cnblogs.com/bedfly/p/12289281.html