ngModel on input of type "range" casts the variable to string

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Current behavior Binding to an input of type="range" casts the variable to a string.

Expected/desired behavior It should be a number.

Reproduction of the problem I don’t think there’s a need for a Plunker, though I can make one if this is not enough. Here’s a gif instead with relevant code.

public typeof(whatever: any): string { return typeof whatever; }

a: number = 100;
b: number = 0.5;

<input type="number" [(ngModel)]="a"> {{a}} {{typeof(a)}}
<input type="range" [(ngModel)]="b"> {{b}} {{typeof(b)}}

What is the expected behavior? It should stay a number after going “through” ngModel.

What is the motivation / use case for changing the behavior? A number is a number.

I ended up concatenating strings instead of adding something I expected to be a number.

Please tell us about your environment:

• Angular version: 2.0.0-rc.6
• Browser: Chrome 53.0.2785.92, Firefox 48.0 on Ubuntu 16.04
• Language: TypeScript 1.8.10

[AlmogShaul]

@DzmitryShylovich this issue can be closed #11792 fixed it.

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