发信人: tantom()
整理人: eagle(2000-12-24 10:00:39), 站内信件
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E.例子五:显示出页中的元素结构
<HTML>
<HEAD><TITLE>Elements: Hierarchy</TITLE>
<SCRIPT LANGUAGE="JScript">
function showHierarchy() {
var depth = 0;
var msg = document.all(0).tagName;
for (i=1; i<document.all.length; i++) {
if (document.all(i-1).contains(document.all(i))==true) {
depth = depth + 1;
} else {
var elParent = document.all(i-1).parentElement;
for ( ; depth>0; depth--) {
if (elParent.contains(document.all(i))==true)
break;
elParent = elParent.parentElement;
}
}
msg = msg + "\n";
for (j=1; j<=depth; j++)
msg = msg + " ";
msg = msg + document.all(i).tagName;
}
alert("这个页面中包含的元素为\n" + msg);
}
</SCRIPT>
</HEAD>
<BODY onload="showHierarchy()">
<H1>欢迎光临</H1>
<P>你看到预想的结果 了吗.
</BODY>
</HTML>
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