Bug Tracker

Opened 7 years ago

Closed 7 years ago

#14309 closed bug (notabug)

chrome 29 slows jquery extension

Reported by: ouiliam <lhahne@…> Owned by:
Priority: undecided Milestone: None
Component: unfiled Version: 1.10.2
Keywords: Cc:
Blocked by: Blocking:



this extension was instant in chrome version 28, but now takes forever in version 29

i tried using jquery 1.10.2 and 2.0.3 without success

any ideas? main script below: Get all the text nodes in the document, and replace any Chinese characters found with Jyutping. $(getTextNodesIn(document)).each(function(index, el) {

var $el, text, chars, i, len, c, jyutping, frag, match, phonetic, tone; $el = $(el), text = $el.text(), chars = [], frag = document.createDocumentFragment();

Walk through the text in this node one character at a time. for (i = 0, len = text.length; i < len; i++) {

c = text[i], jyutping = _charmap[c];

If the char was in our map (i.e. it's a Chinese char), replace it with Jyutping. if (jyutping) {

if (chars.length) {

frag.appendChild(document.createTextNode(chars.join())); chars = [];

} match = jyutping.match(/(\w+)(\d)$/); if (match && match.length == 3) {

phonetic = document.createTextNode(match[1]); tone = document.createElement('sup'); tone.appendChild(document.createTextNode(match[2])); frag.appendChild(phonetic); frag.appendChild(tone);

} else


} else



Add any remaining chars to the document fragment. if (chars.length)


Replace the text node with the fragment we've assembled. $el.replaceWith(frag);


Selects all decendent text nodes of an element. http://stackoverflow.com/questions/298750/how-do-i-select-text-nodes-with-jquery function getTextNodesIn(node, includeWhitespaceNodes) {

var textNodes = [], whitespace = /\s*$/;

function getTextNodes(node) {

if (node.nodeType == 3) {

if (includeWhitespaceNodes
!whitespace.test(node.nodeValue)) {



} else {

for (var i = 0, len = node.childNodes.length; i < len; ++i) {





getTextNodes(node); return textNodes;


Change History (2)

comment:1 Changed 7 years ago by ajpiano

#14308 is a duplicate of this ticket.

comment:2 Changed 7 years ago by ajpiano

Resolution: notabug
Status: newclosed

Thanks for taking the time to report a ticket, The jQuery Core bug tracker is only for reporting and identifying bugs directly in jQuery core, not in Chrome or any other web browser, nor is it a general programming support forum. It sounds like this should be taken up either with the extension's developers or the Chrome team.

Worth noting, however, is that a documentFragment is not a valid input to replaceWith or any other jQuery method.

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