Listen when extension popup page closes in Crossrider -

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i need know when crossrider's extension closes can throw message in background. easy on other way around

appapi.ready(function() {  }

this i'm using on popup.html determine if extension opened. need appapi.close(function() {}) can't find on crossrider's doc http://docs.crossrider.com/

thanks, kevin

so if want monitor "popup page close" event, listen unload event popup page. 

window.addeventlistener("unload", function() {     // logic here }, false);

please aware can't use console.log in function, since time unload event fires late. see this post more details.


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