javascript - jQuery Selector - checked and class begins with - Stack Overflow

admin管理员组

文章数量:1426790

I need to get the value of the first checkbox which is checked and who's class name begins with 'rqc', eg. rqc205

I have tried this: requestID=$('#requestsTable').find('input[class^='rqc']:checked').val();

but it yields nothing, whereas requestID=$('#requestsTable').find('input:checked').val(); works but does not limit to the class.

I need to get the value of the first checkbox which is checked and who's class name begins with 'rqc', eg. rqc205

I have tried this: requestID=$('#requestsTable').find('input[class^='rqc']:checked').val();

but it yields nothing, whereas requestID=$('#requestsTable').find('input:checked').val(); works but does not limit to the class.

• javascript
• jquery
• class
• selector
• checked

Share Improve this question Follow edited Mar 7, 2010 at 2:04 Justin Johnson 31.3k77 gold badges6666 silver badges8989 bronze badges asked Mar 7, 2010 at 1:51 AlexAlex 1,57822 gold badges1111 silver badges1515 bronze badges

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 5

You have a syntax error. Either fix your quotes around the attribute value, or remove them altogether (they don't seem to be required).

requestID = $('#requestsTable').find("input[class^='rqc']:checked").val();

or

requestID = $('#requestsTable').find("input[class^=rqc]:checked").val();

Perhaps:

requestID = $('#requestsTable').find('input[class^="rqc"]').filter(':checked').val();

This is, currently un-checked/un-verified. I think it should work, but I'm still new to jQuery, so I'll post the possibility, check it and then amend if necessary.

---

Much to my surprise, that works.

But it's worth pointing out, I think, that it might be easier to get the value using jQuery's click() event.

$(document).ready(
    function() {
        $('input[class^="rqc"]').click(
            function() {
                var requestID = $(this).val();
            }
        );

    }
);

Though obviously that depends on what exactly you're doing, and why.

本文标签： javascriptjQuery Selectorchecked and class begins withStack Overflow