background
英 [?b?kgra?nd]? ?美 [?b?k?ɡra?nd]??
n.（畫等的）背景;底色;背景資料;配樂
復(fù)數(shù)： backgrounds
attachment
英 [??t?t?m?nt]? ?美 [??t?t?m?nt]??
n.（用電子郵件發(fā)送的）附件，附屬物;依戀，依附;扣押財(cái)產(chǎn)<法>逮捕，扣押（人，財(cái)產(chǎn)）
復(fù)數(shù)： attachments
javascript backgroundAttachment 屬性 語法
作用：設(shè)置背景圖像是否固定或者隨著頁面的其余部分滾動。
語法：Object.style.backgroundAttachment=scroll|fixed
注釋：請?jiān)O(shè)置一種可用的背景顏色，這樣的話，假如背景圖像不可用，頁面也可獲得良好的視覺效果。
javascript backgroundAttachment 屬性 示例
<html>
<head>
<style type="text/css">
body
{
background-color="#FFCC80";
background-image:url(http://img.php.cn/upload/article/000/005/656/5af270fd37755429.jpg);
}
p
{
color:white;
}
</style>
<script type="text/javascript">
function changeAttachment()
{
document.body.style.backgroundAttachment="fixed";
}
</script>
</head>
<body>
<input type="button" onclick="changeAttachment()"
value="Set background-image to be fixed" />
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
</body>
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