Running a function on multiple elements using Jquery

Question

I've got some code that I'd like to run on every single checkbox on my page within a table, but I'm not sure of the best way to do this? I've tried something like this but it didn't work :(

$(document).ready(function() {

    function whatever (elem) {
        var $elem = elem;
        $elem.val('test');
    }

    $('table tr td :checkbox').(function() {
        whatever($(this));
    }

});

Any help would be fantastic, at a bit of a loss with this! Thanks :)

You can select an answer as the correct answer by clicking the checkmark. — Tyler Carter
– Tyler Carter, Commented Aug 6, 2009 at 21:27

Tyler Carter · Accepted Answer · 2009-08-06 21:18:38Z

8

Use $.each();

$.each($('table tr td :checkbox'), function()
    {
       // Code
    });

To access the checkbox you are currently working on in the loop, use this.

$.each($('table tr td :checkbox'), function()
    {
       $(this).hide();
    });

answered Aug 6, 2009 at 21:18

Tyler Carter

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Comments

Sinan Taifour · Accepted Answer · 2009-08-06 21:19:23Z

1

Check $().each().

And by the way, foo.(bar) is not valid Javascript syntax.

answered Aug 6, 2009 at 21:19

Sinan Taifour

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4 Comments

Nick Over a year ago

Thanks for the info, sorry to be stupid but can you explain where I used the foo.(bar) thing please? Thanks :)

Sinan Taifour Over a year ago

Actually, it is good you ask :). In the following (copied from your code, rearranged to fit on a single line): $('table tr td :checkbox').(function() { whatever($(this)); }. In this case foo is $('...') and bar is function() { ... }.

Nick Over a year ago

Ahh! Thank you! That's a very handy explanation, as I've often seen 'foo' and 'bar' and didn't realise what they meant until now!

Sinan Taifour Over a year ago

They are simply placeholders. Instead of having to write a long piece of code to make a point, I used placeholders. They are also used for names of variables or classes when you just want to explain an abstract idea.

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