jquery unselecting all checkboxes

Question

I have this HTML:

<div id="SomeID">

  <input type="checkbox" class="SomeClass">
  <input type="checkbox" class="SomeClass">
  <input type="checkbox" class="SomeClass">

</div>

I want to unselect all the checkboxes that are of type SomeClass.

  $('#SomeID .SomeClass').each(function () {
     $(this)....
  });

How do I do that?

Thanks.

Answer 1

You'd use prop:

$('#SomeID .SomeClass').prop('checked', false);

If you're in a version of jQuery pre 1.6, you'd use:

$('#SomeID .SomeClass').each(function () {
    this.checked = false;
});

---

Don't use attr or removeAttr for changing :checked state!

^{There is a difference between changing the checked property on the element and changing the checked attribute, it's subtle, but worth mentioning.}

If you change the attribute value, and the user resets the form, the "reset" state will be pulled from whether the [checked] attribute exists. If you've been adding/removing the [checked] attribute, you will have lost the original state of the checkbox.

Here's an example

Answer 2

$(".SomeClass").prop('checked', false);