我想得到的效果: 有两个层(a,b),一个层(a)包含另一个层(b),现在通过js动态给a层添加一个层(c),且c层包含有图片,想用c层 作为背景的;代码如下:
<script language="javascript" type="text/javascript">
function show(){
var dom=document.getElementById("id2");
var adddiv = document.createElement("div");
adddiv.id="back"+dom.id;
adddiv.innerHTML = "<img src='backgroundImage/1.jpg' width='100%' height='100%'/>";
dom.style.position="relative";
cssStr = "position:absolute; z-index:-100; width:100%; height:100%; left:0px; top:0px; padding-top:0px; padding-left:0px; padding-right:0px; padding-bottom:0px;";
var style =document.createElement("style");
style.type = "text/css";
style.innerHTML = cssStr;
adddiv.appendChild(style);
dom.appendChild(adddiv);
}
window.onload=show;
</script>
<body>
<div id="id2" style=" position:relative; width:50%; height:50%; border:1px solid #990033;">
<div>sfsdfd</div>
</div>
不知道哪错啦! c层总是被b层挤下去了一样,总做不了a层的背景! 大家帮忙找找!
<script language="javascript" type="text/javascript">
function show(){
var dom=document.getElementById("id2");
var adddiv = document.createElement("div");
adddiv.id="back"+dom.id;
adddiv.innerHTML = "<img src='backgroundImage/1.jpg' width='100%' height='100%'/>";
dom.style.position="relative";
cssStr = "position:absolute; z-index:-100; width:100%; height:100%; left:0px; top:0px; padding-top:0px; padding-left:0px; padding-right:0px; padding-bottom:0px;";
var style =document.createElement("style");
style.type = "text/css";
style.innerHTML = cssStr;
adddiv.appendChild(style);
dom.appendChild(adddiv);
}
window.onload=show;
</script>
<body>
<div id="id2" style=" position:relative; width:50%; height:50%; border:1px solid #990033;">
<div>sfsdfd</div>
</div>
不知道哪错啦! c层总是被b层挤下去了一样,总做不了a层的背景! 大家帮忙找找!
<script language="javascript" type="text/javascript">
function show(){
var dom=document.getElementById("id2");
var adddiv = document.createElement("div");
adddiv.id="back"+dom.id;
adddiv.innerHTML = "<img src='http://c.csdn.net/bbs/t/5/i/pic_logo.gif' width='100%' height='100%'/>";
adddiv.style.position="relative";
adddiv.style.zindex = "0";
adddiv.style.width = "100%";
adddiv.style.height = "100%";
adddiv.style.left = "0px";
adddiv.style.top = "0px";
dom.appendChild(adddiv);
}
window.onload=show;
</script>
<body>
<div id="id2" style=" position:relative; width:50%; height:50%; border:1px solid #990033;z-index:-1">
<div>sfsdfd</div>
</div>
SCROLLBAR-FACE-COLOR: #6D4110;
SCROLLBAR-HIGHLIGHT-COLOR: #3C140C;
SCROLLBAR-SHADOW-COLOR: #3C140C;
SCROLLBAR-3DLIGHT-COLOR:#3C140C;
像背景一样显示 是啥效果?<script language="javascript" type="text/javascript">
function show(){
var dom=document.getElementById("id2");
dom.style.background = "url(http://c.csdn.net/bbs/t/5/i/pic_logo.gif)";
/*
var adddiv = document.createElement("div");
adddiv.id="back"+dom.id;
adddiv.innerHTML = "<img src='http://c.csdn.net/bbs/t/5/i/pic_logo.gif' width='100%' height='100%'/>";
adddiv.style.position="relative";
adddiv.style.zindex = "0";
adddiv.style.width = "100%";
adddiv.style.height = "100%";
adddiv.style.left = "0px";
adddiv.style.top = "0px";
dom.appendChild(adddiv);
*/
}
window.onload=show;
</script>
<body>
<div id="id2" style=" position:relative; width:50%; height:50%; border:1px solid #990033;z-index:-1">
<div>sfsdfd</div>
</div>
哦,是要做b的背景,不是做a的背景啊……
<script language="javascript" type="text/javascript">
function show(){
document.getElementById("id2").childNodes[0].style.background = "url(http://avatar.profile.csdn.net/3/5/E/2_muzizhuben.jpg)";
}
window.onload=show;
</script>
<body>
<div id="id2" style=" position:relative; width:50%; height:50%; border:1px solid #990033;z-index:-1">
<div style="over-flow:hidden">sfsdfd<BR>aaaaa<BR>bbbbb</div>
</div>
三个层 a,b,c
a的上面是c, c的上面是b
我想让c的大小与a相同,且c中有个图片填满c,这就相当
于是a的背景啦! 而b还是在最上面不动!
所以产生的效果看起来是给a设置了背景图片!
希望这次可以理解我的意思!在帮忙想想谢谢!