two way binding not working in knockout.js

Question

I am trying to update the UI after chages to viewModel but it doesn\'t work , am I missing something ? http://jsfiddle.net/rdZjb/1/

  viewModel = {
        first         


        

Answer 1

To change an observable (after initializing it) via Javascript, you need to call it as a function such as

viewModel.firstName("Paul");