I tried the click binding, but its not working

[Nirmal Kumar.A]

I tried the example code provided on this page for click binding.

http://knockoutjs.com/documentation/click-binding.html

But, it did not work. I tested this code here.

http://learn.knockoutjs.com/#/?tutorial=intro

I have attached a screenshot of the output that I got. Could anyone help me with this?

[John Olson]

First, you need to apply the bindings either in a <script> tag within the HTML document or at the bottom of the javaScript file. 

ko.applyBindings(viewModel);

Also, it's unnecessary to create the previous count variable. You can simply increment it within the observable parameters.

JSFiddle