How to get the id of tr where id = value in array in jquery

Question

I have a table with tr that have unique numeric ids set. I also have an array that contains the ids.

So basically I need to check if the tr id is in the array of values, if so add or remove a class from an element inside of it.

I have figured this out....

No one is going to write this from scratch for you. Where are you stuck? — Diodeus - James MacFarlane, Mar 05 '12 at 21:26
Numbers are not valid for IDs in HTML. Please refer to this answer for naming conventions: http://stackoverflow.com/questions/70579/what-are-valid-values-for-the-id-attribute-in-html — CAbbott, Mar 05 '12 at 21:27
Not asking anybody to write it for me...Just not sure how to go about it. — Carl Weis, Mar 11 '12 at 05:13

score 1 · Answer 1 · answered Mar 05 '12 at 21:41

1

with:

var ids = [ /* array of ids */ ];

do:

$('#'+ids.join(',#')).addClass('classy');

answered Mar 05 '12 at 21:41

Ben

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score 0 · Answer 2 · answered Mar 05 '12 at 21:30

0

Something like this?

var ARR = [ /* some ids */ ];

$('tr').each(function() {
  if (ARR.indexof($(this).attr('id')) != -1)
     $(this).addClass('hurray!');
});

answered Mar 05 '12 at 21:30

freakish

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`this.id` works perfectly well - `$(this).attr('id')` is totally unnecessary. – Anthony Grist Mar 05 '12 at 21:36
Older IEs don't have Array#indexOf. – Flo Mar 05 '12 at 21:37
@AnthonyGrist Oh, of course, bad habit. :) – freakish Mar 05 '12 at 21:37
@Flo Yeah, one can easily implement it by himself... but who cares about older IE anyway? :) – freakish Mar 05 '12 at 21:40

score 0 · Answer 3 · answered Mar 05 '12 at 21:43

Solution assumes same class being add/removed to same elemnt within row. Passing true/false to toggleClass() determines add/remove

$('tr').each(function() {
    var isInArray=$.inArray(parseInt( $(this).attr('id'), 10)) > -1;
    $(this).find(someEleemntSelector).toggleClass('className',isInArray );  
});

How to get the id of tr where id = value in array in jquery

3 Answers3