廢話不多說(shuō)了，直接給大家貼js代碼了，具體代碼如下所示：
<!DOCTYPE html><html><head><title></title><meta http-equiv="content-type" content="text/html;charset=utf-"/></head><body style="background:pink;"><div id="ball" style="position:absolute;" onmouseover="stop()" onmouseout="jixu()"><img src="http://img.taobaocdn.com/imgextra/i//TBfGvsdpXXXXbDXXXXXXXXXXXX-.gif"/></div><script type="text/javascript">//定義局部變量var directX=;//定義x軸方向var directY=;//定義y軸方向var ballX=;//定義x軸坐標(biāo)var ballY=;//定義y軸坐標(biāo)var speed=;//定義一個(gè)速度var myball=document.getElementById("ball");function ballMove(){ballX=ballX+directX*speed;ballY=ballY+directY*speed;//改變div的left,top的值myball.style.left=ballX+"px";myball.style.top=ballY+"px";//判斷x軸什么時(shí)候轉(zhuǎn)向if(ballX+myball.offsetWidth>=document.documentElement.clientWidth||ballX<=){//clientWidth瀏覽器不帶滾動(dòng)條的寬度;clientHeight瀏覽器不帶工具欄菜單欄以及滾動(dòng)條等的高度directX=-directX;//offsetWidth可以返回一個(gè)對(duì)象的實(shí)際寬度(不帶單位)offsetHeight類同}//判斷y軸何時(shí)轉(zhuǎn)向if(ballY+myball.offsetHeight>=document.documentElement.clientHeight||ballY<=){directY=-directY;}}var stopmove=setInterval("ballMove()",);function stop(){clearInterval(stopmove);}function jixu(){var stopmove=setInterval("ballMove()",); ;}</script></body></html> 以上代碼是比較簡(jiǎn)單，希望對(duì)大家使用Js實(shí)現(xiàn)簡(jiǎn)單的小球運(yùn)動(dòng)效果有所幫助！
