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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>DOM Traversal: NodeIterator: Filters</title>
<script type="text/javascript"> <![CDATA[
function doTest() {
var iterator = document.createNodeIterator(document, NodeFilter.SHOW_ALL, testFilter, false);
// skips text nodes and body element
var expected = new Array(9, // document
1, // html
1, // head
1, // title
1, 4, // script and CDATA block
// body (skipped)
1, // pre
// </body>
8, // <!-- -->
// PI skipped
4); // CDATA
var found = new Array();
// walk document
var node;
while (node = iterator.nextNode())
found.push(node.nodeType);
// check results
var errors = 0;
var s = '';
var length = (found.length > expected.length) ? found.length : expected.length;
s += 'EXPECTED FOUND\n';
for (var i = 0; i < length; i += 1) {
s += ' ' + (expected[i] ? expected[i] : '-') +
' ' + (found[i] ? found[i] : '-');
if (found[i] != expected[i]) {
s += ' MISMATCH';
errors += 1;
}
s += '\n';
}
var p = document.getElementsByTagNameNS('http://www.w3.org/1999/xhtml', 'pre')[0];
if (errors)
p.firstChild.data = 'FAIL: ' + errors + ' errors found:\n\n' + s;
else
p.firstChild.data = 'PASS';
}
function testFilter(n) {
if (n.nodeType == 3) {
return NodeFilter.FILTER_SKIP;
} else if (n.nodeName == 'body') {
return NodeFilter.FILTER_REJECT; // same as _SKIP
}
return 1; // FILTER_ACCEPT
}
]]></script>
</head>
<body onload="doTest()">
<pre id="result">FAIL: Script failed to run.</pre>
</body>
<!-- some more nodes to test this: -->
<?body test?>
<![CDATA[]]>
</html>
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