radioButton: integer values are not working because of strict comparison

[artch]

If the md-radio-group model is defined as integer, it doesn't display checked status (md-checked class) because of the strict === value comparison here:

var checked = (rgCtrl.getViewValue() === attr.value);

Bug reproduce suite: http://codepen.io/artch/pen/jEVKYe?editors=101

[marcysutton]

After looking at this JavaScript equality table, it looks like we can get away with == in this instance.

[gkalpak]

I haven't looked properly into it, but using == should be avoided if possible.
Why not convert the viewValue to string ?

[marcysutton]

Good question–that does seem like a wise idea given that == is basically the !important of JavaScript

[marcysutton]

Upon closer inspection, we are going to stick with == and avoid string coercion. This approach is used on the input directive in Angular: https://github.com/angular/angular.js/blob/master/src/ng/directive/input.js#L1290-L1310