Detecting change to Knockout view model

Question

Sure this is a very easy question to answer but is there an easy way to determine if any property of a knockout view model has changed?

Answer 1

You might use the plugin below for this:

https://github.com/ZiadJ/knockoutjs-reactor

The code for example will allow you to keep track of all changes within any viewModel:

ko.watch(someViewModel, { depth: -1 }, function(parents, child) { 
    alert('New value is: ' + child());
});

PS: As of now this will not work with subscribables nested within an array but a new version that supports it is on the way.

Update: The sample code was upgraded to work with v1.2b which adds support for array items and subscribable-in-subscribable properties.