How do you increment a knockout.js observable?

Question

I\'m finding this a strange place to be at a bit of a loss, but if I cant\' do this:

koObserv(koObserv() + 1);

and a method is not provided, am

Answer 1

you could abstract these logic into an extend observable

ko.observable.fn.increment = function (value) {
    this(this() + (value || 1));
};

var counter = ko.observable(0);
console.log(counter()); // 0

counter.increment();
console.log(counter()); // 1

counter.increment();
console.log(counter()); // 2

counter.increment(5);
console.log(counter()); // 7