Knockout observableArray in TypeScript

Question

What is the proper way to initialize a Knockout observableArray in a TypeScript class?

I am doing something like this:

   module ViewModel { 

        de         


        

Answer 1

This line is where your mistake is:

agencies[i]

When you access an observable array, it is actually wrapped in a function so you do access it like:

agencies()[i]

Also make yourself a favor and download the Knockout definitions from: https://github.com/borisyankov/DefinitelyTyped

Then declare your attributes with types:

module ViewModel {

    export class IndexPageViewModel {

        agencies: KnockoutObservableArray;

        constructor () {
            this.agencies = ko.observableArray([]);
        }
    }
}