What is the difference between ng-click and data-ng-click in angularjs?

Question

From 1st view seems like data-ng-click can pass some data as argument to method should be invoked during pressing on button.

But I don't see the difference.

I have followed snippets of code:

HTML

<input      type="button"      value="Fess"     ng-click="toggle(2)"> 

OR

<input      type="button"      value="Fess"     data-ng-click="toggle(2)"> 

JS

$scope.toggle = function (valueS) {     alert(valueS);         } 

Both work.

Thanks,

Answer 1

They are the same thing. You can use data-ng-click to make a valid html.