Checkbox check-uncheck through attr and removeAttr doesnt work for second time.

Description

<div id="container">
  <input type="checkbox">
  <input type="checkbox">
  <input type="checkbox">
  <input type="checkbox">
</div>
<button type="button" id="addAll">add all</button>
<button type="button" id="removeAll">remove all</button>

$("#addAll").click(function() {
  $("#container input:checkbox").attr('checked', 'checked');
});
$("#removeAll").click(function() {
  $("#container input:checkbox").removeAttr('checked');
});

Running above code, for the checking unchecking second time nothing happens. Even though attributes are added and removed normally. Using native setAttribute and removeAttribute works fine.

Link to test case

https://jsfiddle.net/jz5p57k9/

[dmethvin]

Can you link to your test case that includes a native version, so we can see the difference?

[timmywil]

In 2.1.4, we were still setting the checked IDL along with the attribute, for back-compat. Makes sense that 3.0+ works as expected.