KnockOut run function on value changed

Question

Got simple viewModel:

function viewModel() {
    enabled: ko.observable(false);
    ...
}

and some binding like:

<input data-bind="hasFocus: enabled" />

and i want run some function on focus, and other on focus lost( or enabled = true/false) but run when value changes. Any help?

Answer 1

You could subscribe to your enabled function, such as:

enabled.subscribe(function(newValue) {
   if(newValue) {  // Has focus

   } else { 
       // No focus
   }
});