问题
I'm using jQuery to manipulate form data in an osCommerce instance and I'm having trouble selecting some elements.
The script generates textareas with the id product_description[N], N being the 1, 2, 3...
The problem is that having an id value with [] in it makes jQuery (even regular script) not to select the element and I can't work with it.
I tried switching the id to underscores, manipulate the information and then change it back to [ ] but I can't even do:
$('#product_description[1]').attr('id','products_description_1');
Is there a way to make jQuery to select something like this $('#some[2]').function... ?
If not, If there's another way I can change the ID value then it's ok because I can work as usually and then change it back to the [ ] for the php to recognize that field
Yes, I know, I can select the textarea in another way like by class, but as there are many texareas in te page, I need a unique name and that would requiere editing osCommerce script which I don't want. I plan to contribute my JS to the oscommerce community and for another person to just add a .js is easy, but if they have to edit a php file for the javascript to work it could be either too scary for a newbie or impossible for somebody that already edited it.
Thanks a lot
回答1:
Try this:
$('#product_description\\[1\\]')
Note that while this may work, the bracket characters are not valid for use in IDs prior to HTML5 (although they're fine for use in classes).
回答2:
$("#product_description\\[1\\]").attr("id", "products_description_1");
is the right code, look at "ID-Selector" on jQuery.com
回答3:
The [] characters are not valid ID characters in HTML4. Don't expect consistent results in different browsers if you use them.
EDIT:
If you just can't control the format of the IDs on the server side, you could do this:
$("*[id='product_description[1]']")
but it will be terribly slow in browsers that don't support querySelectorAll.
(Note that you shouldn't need the \\ here because of the quotation marks around the value.)
来源：https://stackoverflow.com/questions/4822515/jquery-selector-not-working-with