javascript 广告移动特效的实现代码
<!DOCTYPEhtml>
<htmllang="en">
<head>
<metacharset="UTF-8">
<title>Document</title>
<style>
.box2{}
.box2{width:200px;height:200px;background:red;border-radius:50%;position:relative;}
.box3{width:800px;height:500px;border:1pxsolidred;}
</style>
</head>
<body>
<buttontype=""id="start">开始</button>
<buttontype=""id="stop">停止</button>
<divclass="box3">
<divid="box"class="box2">
</div>
</div>
</body>
<scripttype="text/javascript">
varlr=600;
vartb=300;
vari=0;
varj=0;
varbox=document.getElementById('box');
varstart=document.getElementById('start');
varstop=document.getElementById('stop');
start.onclick=function(){
start.style.display='none';
stop.style.display='inline';
vartime=setInterval(function(){
box.style.left=i+'px';
box.style.top=j+'px';
if(i>lr){
lr=0;
i--;
}
if(i<=lr){
lr=600;
i++;
}
if(j>tb){
tb=0;
j--;
}
if(j<=tb){
tb=300;
j++
}
stop.onclick=function(){
clearInterval(time);
stop.style.display='none';
start.style.display='inline';
}
},5);
}
</script>
</html>
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