this is not possible within optimizely if you want to get an absolute value. If you just want to know, if someone clicked a button or not you can use specific click goals for each button or a group of buttons.
Another weired approach can be custom events for each absolute value ( "clicked once, twice,..."), count the number of clicks in a cookie and fire the custom events after increasing the click value. But, as mentioned, it is as weired as trying to do this via google analytics.
What is your idea behind the test, why is the absolute number of clicks interesting?
Kind regards
Michael
Yes, this is possible.
In your case, you can create the element dynamically (check out the code from this post: https://blog.optimizely.com/2013/09/12/how-to-add-a-lightbox-to-an-experiment/), and append it to the same section of each page. Once you have the button(s) you want on every page, you can create a custom goal that pushes an event each time a visitor clicks on one of the buttons.
Let's say you want to track the clicks on the first instance of an element with a class of newElement, you would have something like this in your variation code:
var newElement = document.getElementsByClassName('newElement'[0]);
newElement.addEventListener('click', function(){
window['optimizely'] = window['optimizely'] || [];
window.optimizely.push(["trackEvent", "newElementClick"]); }
});Next, you'll want to create this event as a goal in your experiment's goal section. Notice how the callback of the event listener pushes a new event into Optimizely which will populate with your results.
