JavaScript妙味课堂 物体平滑移动特效_图象特效

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>JavaScript物体平移运动特效</title> <style> #div1 {background: red url(http://www.jb51.net/images/logo.gif); position:absolute; left:50px; top:50px; width:200px; height:200px;} </style> <script type="text/javascript"> var g_oTimer=null; function startMove() { if(!g_oTimer) { g_oTimer=setInterval(moveTimerHandler, 30); } } function moveTimerHandler() { var oDiv=document.getElementById('div1'); var iSpeed=5; if(oDiv.offsetLeft>=300) { clearInterval(g_oTimer); g_oTimer=null; } else { oDiv.style.left=oDiv.offsetLeft + iSpeed + 'px'; } } window.onload=function () { var oBtn=document.getElementById('btn_start_move'); oBtn.onclick=startMove; }; </script> <div id="div1"></div> <input id="btn_start_move" type="button" value="开始运动">
[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]