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

44 строки
1.1 KiB
JavaScript

/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
//
// 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")