gecko-dev/dom/tests/js/DumpTree.js

61 строка
1.7 KiB
JavaScript

/* -*- Mode: js; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
//
// travers the html tree and dump out the type of element
//
function traverse(node, indent)
{
dump("\n")
indent += " "
var type = node.nodeType;
// if it's an element dump the tag and recurse the children
if (type == Node.ELEMENT_NODE) {
dump(indent + node.tagName)
// go through the children
if (node.hasChildNodes()) {
var children = node.childNodes;
var length = children.length;
var count = 0;
while(count < length) {
child = children[count]
traverse(child, indent)
count++
}
}
}
// it's just text, no tag, dump "Text"
else if (type == Node.TEXT_NODE) {
dump(indent + "Text")
}
}
var node = document.documentElement
traverse(node, "")
dump("\n")