jquery select all checkboxes

Question

I have a series of checkboxes that are loaded 100 at a time via ajax.

I need this jquery to allow me to have a button when pushed check all on screen. If more are lo

Answer 1

The currently accepted answer won't work for jQuery 1.9+. The event handling aspect of the (rather heavily) overloaded .toggle() function was removed in that version, which means that attempting to call .toggle(function, function) will instead just toggle the display state of your element.

I'd suggest doing something like this instead:

$(function() {
    var selectAll = $('#selectall');
    selectAll.on('click', function(e) {
        var checked = !(selectAll.data('checked') || false);
        $('#friendslist .tf').prop('checked', checked);
        selectAll.data('checked', checked);
    });
});

That uses a regular click event handler, plus a data attribute to track the "toggled" status and invert it with each click.