為什么會出現(xiàn)這樣的問題？
<!DOCTYPE?html>
<html>
<head>
<meta?charset="UTF-8">
<title></title>
<style?type="text/css">
body{margin:?0;padding:?0;}
#div1{width:560px;height:660px;background-color:#0C4E7C;position:fixed;left:-560px;}
span{width:20px;height:50px;background-color:#FFA500;position:absolute;left:560px;border:?5px?dotted?#8B0000;}
#div2{width:?200px;height:?200px;background-color:?#8B0000;opacity:0.3;margin-left:30px;}
</style>
<script?type="text/javascript">
window.onload=function(){
var?div=document.getElementById("div1"); //var?stl=window.getComputedStyle(div,null);
var?div1=document.getElementById("div2"); //div.style.top=(document.documentElement.clientHeight/2)-parseInt(stl.height)/2+"px";
//透明變化
div1.onmouseover=function(){
stars(100);
}
div1.onmouseout=function(){
stars(30);
}
//伸縮運(yùn)動
div.onmouseover=function(){
starMove(0);
}
div.onmouseout=function(){
starMove(-560);
}
}
//2-1&3-1
var?timer=null;
function?starMove(sp){
clearInterval(timer);
var?div=document.getElementById("div1");
timer=setInterval(function(){
var?speed=0;
if(div.offsetLeft<sp){speed=6;}
else{speed=-6;}
if(div.offsetLeft==sp){
clearInterval(timer);
}
else{
if(div.offsetLeft>-560/2){speed=speed*3;}else{speed=speed;}
div.style.left=div.offsetLeft+speed+"px";
//解決抖動
if(div.offsetLeft>0){clearInterval(timer);div.style.left="0px";}
if(div.offsetLeft<-560){clearInterval(timer);div.style.left="-560px";}
}
},26)
}
//2-2
var?tiimer=null;
var?aph=30;
function?stars(isp){
var?div1=document.getElementById("div2");
clearInterval(tiimer);
tiimer=setInterval(function(){
var?speed=0;
if(aph>isp){speed=-10;}else{speed=10;}
if(aph==isp){clearInterval(tiimer);}
else{
aph+=speed;
div1.style.opacity=aph/100;}
},30)
}
</script>
</head>
<body>
<div?id="div1">
<span>分享</span>
</div>
<div?id="div2">
</div>
</body>
</html>為什么這個藍(lán)色的DIV會被透明化？我沒給他設(shè)置透明啊。
http://idcbgp.cn/video/2880
2016-05-30
在div1的css里面設(shè)置z-index的值，大于0就能覆蓋，等于0就是你現(xiàn)在的情況。