How to replace a given index element in knockoutjs

Question

How do you replace a given index in an observableArray with another element.

I have: ViewModel.Elements()[index]

how can i replace it with anot

Answer 1

Editing the underlying array and reassigning it did the trick for me. I had trouble with other approaches.

var underlyingArray = this.someObservableArray();

// Do modifications... Swap some items...
// No one is being notified just yet...

// Reassign to observable to update everything
this.someObservableArray(underlyingArray);