JS实现静止元素自动移动示例_javascript技巧

<script> <BR>var timenum; <BR>var mar=0;//控制移动量的变量 <BR>var flag = 0;//实现控制左右移动的一个变量 <BR>//实现向右移动的函数 <BR>function moveright(){ <BR>sp1.style.marginLeft=mar+"px"; <BR>mar=mar+5; <BR>} <BR>//实现向右移动的函数 <BR>function moveleft(){ <BR>sp1.style.marginLeft=mar+"px"; <BR>mar=mar-5; <BR>} <br><br>function go() { <BR>var sp1 =document.getElementById("sp1"); <BR>var btn1 = document.getElementById("start"); <BR>if(!btn1.disabled){ <BR>btn1.disabled = true; <BR>document.getElementById("pause").disabled=false; <BR>} <BR>sp1.innerHTML=parseInt(sp1.innerHTML)+1; <BR>timenum = window.setTimeout(go,10); <BR>if(flag==1){ <BR>window.setTimeout(moveleft,10); <BR>} <BR>if(flag==0){ <BR>window.setTimeout(moveright,10); <BR>} <BR>if(mar>(window.outerWidth)){ <BR>flag=1; <BR>} <BR>if(mar<0){ <BR>flag=0; <BR>} <BR>} <BR>function stop(){ <BR>document.getElementById("start").disabled = false; <BR>document.getElementById("pause").disabled=true; <BR>window.clearTimeout(timenum); <BR>} <BR></script>


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