JS定时器的使用--延时提示框

<title>无标题文档</title>
<style>
div{float:left;margin:10px;}
#div1{width:50px; height:50px; background:red;}
#div2{width:200px; height:200px; background:#999;}
</style>
<script>
window.onload=function ()
{
var oDiv1=document.getElementById('div1');
var oDiv2=document.getElementById('div2');
var timer=null; /* oDiv1.onmouseover=function (){
clearTimeout(timer);
oDiv2.style.display='block';
}
oDiv1.onmouseout=function ()
{
timer=setTimeout(function(){
oDiv2.style.display='none';
},500);
}
oDiv2.onmouseover=function (){
clearTimeout(timer);
}
oDiv2.onmouseout=function (){
timer=setTimeout(function (){
oDiv2.style.display='none';
},500); }*/
oDiv1.onmouseout=oDiv2.onmouseout=function (){
timer=setTimeout(function (){
oDiv2.style.display='none';
},500);
};
oDiv1.onmouseover=oDiv2.onmouseover=function (){
clearTimeout(timer);
oDiv2.style.display='block';
};
};
</script>
</head> <body>
<div id="div1"></div>
<div id="div2"></div>
</body>

JS定时器的使用--延时提示框

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