Angular adds strange options into select element when setting model value

Answer 1

When you assign a value to some select element, AngularJS looks for the provided value in the value attribute of the option tags in that select element. But the catch is, AngularJS does a type based comparison. So if the values in the option tags are strings (which usually is the case) and the variable you bind using ng-model is a number, AngularJS fails to find the matching option element and hence, creates its own element like this -

The solution is, while binding itself, convert it to the appropriate type.

In this case, the solution would be to bind an Integer