When I run an experiment on my website, I want to be able to find out which test and variation the current visitor sees. I can\'t find how to do this from the Optimizely Javascr
You can get the ID of the first running experiment (assuming you have one), and then the variation index (e.g., 0, 1, 2), name, and ID:
var experimentID = window['optimizely'].data.state.activeExperiments[0];
var variationIndex = window['optimizely'].data.state.variationMap[experimentID];
var variationName = window['optimizely'].data.state.variationNamesMap[experimentID];
var variationID = window['optimizely'].data.state.variationIdsMap[experimentID];