Why isn't my checkbox change event triggered?

Question

I have two functions.

The first function translates a div click into a checked/unchecked toggle. The second function translates a checkbox change into a hide/show ev

Answer 1

Don't bother with the first snippet. Just use LABEL elements:

<label><input type="checkbox">Some option</label>

Now, when the user clicks the label (the text next to the checkbox), the checkbox will be activated.

---

The second snippet can be optimized:

$('input:checkbox').change(function() {
    $('#' + this.id).toggle(this.checked);
});

Answer 2

The change event does not fire when you programmatically change the value of a check box. What you can do to ensure it fires is:

 $(":checkbox").parent().click(function(evt) {
    if (evt.target.type !== 'checkbox') {
        var $checkbox = $(":checkbox", this);
        $checkbox.attr('checked', !$checkbox.attr('checked'));
        $checkbox.change();
    }
});

Answer 3

you are using '.' which is for class selectors instead use '#' since you are using the element ID. Like this:

$(document).ready(function() {
    $(":checkbox").bind('change', function() {
        if($(this).attr("checked")) {
            $('#'+this.id).show();
        }
        else {
            $('#'+this.id).hide();
        }
    });
});