Get Information About Active Optimizely Experiments

optimizely_info.js

// all of this is made possible by the optimizely javascript api, specifically:
// http://developers.optimizely.com/javascript/reference/#the-data-object
function getExperiments() {
	var experimentInfo = {};
	var wasRedirected = false;
	
	/*
	* create an array of experiments that are active on the page
	* you must pass two tests to be placed in an active experiment:
	* 1) url targeting: https://help.optimizely.com/hc/en-us/articles/200040835-URL-Targeting-Choose-where-your-experiment-runs
	* 2) audience https://help.optimizely.com/hc/en-us/articles/200039685-Audiences-Choose-which-visitors-to-include
	*/
	var activeExps = optimizely.activeExperiments;

	// next check if you were placed into redirect experiment
	if (window['optimizely'].data.state.redirectExperiment === undefined) {
		experimentInfo['redirected'] = 'no redirect experiments found';
	}
	else {
		// if you are in a redirect experiment, push that onto the active experiments array
		experimentInfo['redirected'] = 'redirect experiment found';
		activeExps.push(window['optimizely'].data.state.redirectExperiment.experimentId);
		wasRedirected = true;
	}

	/*
	* at this point, if the active experiments array is length 0 or undefined, there are two possibilities:
	* 1) no experiments are running on the page you are looking at
	* 2) you were not placed in any experiments (did not pass URL or audience tests)
	* https://help.optimizely.com/hc/en-us/articles/200040335-How-Optimizely-Works-Snippet-order-of-execution-JavaScript-evaluation-timing-and-cookies
	*/
	if (activeExps.length == 0 | activeExps === undefined) {
		console.log("can't find any experiments!");
	}
	else {
		// otherwise, something is in the array and we should investigate
		activeExps.forEach(function(x) {
			// add an experiment from the experimentInfo object
			// the experiment ID is used as the key, and the value is the name of the experiment
			experimentInfo[x] = {"name": optimizely.data.experiments[x].name};

			// next, get all the variation ids for the current experiment
			var expVariations = optimizely.data.experiments[x].variation_ids;
			expVariations.forEach(function(v) {
				/*
				* using the name of the variation as the key, create a force variation url as a value
				* you can (theoretically) pop this url into an incognito browser and see the variation live
				* see more here: https://help.optimizely.com/hc/en-us/articles/200107480-Force-a-specific-variation-to-run-and-other-URL-parameters-
				*/
				var baseUrl = "";
				// there is some logic first to grab the correct URL if you are in a redirect experiment
				if (wasRedirected) {
					baseUrl = window['optimizely'].data.visitor.referrer;
				}
				else {
					baseUrl = document.location.href;
					// remove ad-tracking params if present
					if(baseUrl.indexOf('?') > -1) {
  						baseUrl = baseUrl.split("?")[0]
					}
				}
				// magically, the x param is still available to us even inside the inner forEach call
				experimentInfo[x][window['optimizely'].data.variations[v].name] = baseUrl + "?optimizely_x" + x + "=" + v
			});
		});
		// return the object with all the experiment/variation info
		return experimentInfo;
	}
};

// store active optimizely experiments and variations
var optimizeThis = getExperiments();