This will combine the two arrays and return the combined list. However, it is not a computed observable array (don’t know if that is even possible), but a regular computed observable. self.masterList = ko.computed(function() { return this.listA().concat(this.listB()); }, this);
If the only purpose of your computed observable is to do a simple binding against it, then using a function would be equivalent. Bindings are implemented inside of a computed observable to track the dependencies, so it will re-trigger your binding when any of the observables change. Here are a few things to consider about … Read more
I realized my first answer missed your point, and won’t solve your issue. The problem is that a computed will only reevaluate if there is some observable that forces it to re-evaluate. There is no native way to force a computed to re-evaluate. However, you can get around this with some hackery by creating a … Read more