Two-way binding with range and number input in AngularJS

Question

I\'m just starting to play around with AngularJS and trying to understand the binding technique. For starters, I tried to make a simple conversion calculator (dozens to pieces,

Answer 1

The problem here is that the input type="range" works with Strings and not with Numbers (while input type="number" only works with Numbers).

http://www.w3.org/wiki/HTML/Elements/input/range

The range state represents a control for setting the element's value to a string representing a number.

If you add val = parseInt(val) as your first instruction on the qty setter it should work:

this.__defineSetter__("qty", function (val) {        
    val = parseInt(val);
    qty = val;
    dozens = val / 12;
});

jsfiddle: http://jsfiddle.net/bmleite/2Pk3M/2/