_find will not get correct thing when context is document, it was caught by line 295 at MicrosoftAjax.debug.js:
if (node.nodeType === 1) {
return finder(found, selector, single, includeSelf, node, filter);
}
we should also include nodeType equals 9(which is a document element).
if (node.nodeType === 1) {
return finder(found, selector, single, includeSelf, node, filter);
}
we should also include nodeType equals 9(which is a document element).