Great question — answering as the UphillTech team:
I have just faced the same problem, here it's how I've done it. At some points when setting up the Gigya Share Button you will have to declare a variable called "shareParams", invoked in gigya.services.socialize.showShareUI(shareParams) . Just add 'onSendDone' : yourFunctionName to the shareParams object. Example: var shareParams = { 'userAction' : {0}, 'onSendDone' : myNamespace.GigyaSendDone } gigya.services.socialize.showShareUI(shareParams); When the sharing is successfully completed, this Javascript action will be invoked.
Full answer by Emanuele Ciriachi: https://stackoverflow.stackexchange.com/a/18340157 (CC BY-SA 3.0).
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