show_hide.html
来自「《JavaScript网页开发体验式学习教程》的源代码」· HTML 代码 · 共 30 行
HTML
30 行
<body onload="setInterval('change()',1000)">
<div id=layer1 STYLE="position:absolute; left:200; top:100">一个块</div>
</body>
<script language="javascript">
var bVisible = true;
var block;
var ns = (document.layers) ? true : false;
var ie = (document.all) ? true : false;
if(ns) block = document.layer1;
else if(ie) block = layer1.style;
function showObject(obj)
{
if(ns) obj.visibility = "show";
else if(ie) obj.visibility = "visible";
}
function hideObject(obj)
{
if(ns) obj.visibility = "hide";
else if(ie) obj.visibility = "hidden";
}
function change()
{
if(bVisible)
showObject(block);
else
hideObject(block);
bVisible = !bVisible;
}
</script>
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