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#1895 closed bug (worksforme)
Opened November 06, 2007 04:47PM UTC
Closed November 14, 2007 04:42AM UTC
jquery not selecting by id where id contains a dot
| Reported by: | derek | Owned by: | |
|---|---|---|---|
| Priority: | major | Milestone: | 1.2.2 |
| Component: | core | Version: | 1.2.1 |
| Keywords: | Cc: | ||
| Blocked by: | Blocking: |
Description
At least it won't using Firefox (tested in 2.0.0.8) and earlier:
e.g. $("#error.password") won't find <span id="error.password">
Looks like the problem is in the regex used here
(from /trunk/jquery/src/selector.js
2 var chars = jQuery.browser.safari && parseInt(jQuery.browser.version) < 417 ?
3 "(?:[\\\\w*_-]|\\\\\\\\.)" :
4 "(?:[\\\\w\\u0128-\\uFFFF*_-]|\\\\\\\\.)",
5 quickChild = new RegExp("^>\\\\s*(" + chars + "+)"),
6 quickID = new RegExp("^(" + chars + "+)(#)(" + chars + "+)"),
7 quickClass = new RegExp("^([#.]?)(" + chars + "*)");
specifically line 4 would need to be like this to make it work:
"(?:[\\\\w\\u0128-\\uFFFF*_-]|\\\\.)"
(change is in backslashes escaping . near the end of the expression)
Sorry, ignore that, I was a bit hasty in thinking this was a bug.
Thanks to the forum I've learnt that jquery requires dots in selectors like this to be escaped, hence the \\\\\\\\ in the regex.
Turns out there is a FAQ entry about this (http://docs.jquery.com/Frequently_Asked_Questions#How_do_I_select_an_element_that_has_weird_characters_in_its_ID.3F).
Would be worth mentioning it in the API docs (http://docs.jquery.com/Selectors/id#id) too though or putting a pointer to that FAQ there at least.