Event when chrome popup is closed

Question

I need to listen to Chrome popup's closing event. I tried listening to onDisconnect event as suggested here :

background.js

  var port = chrome.runtime.connect({ name: "hello" });
  port.onDisconnect.addListener(function() {
    console.log("Disconnected");
  });

However, I get Disconnected every time I open the popup, not when I close it. Does anyone know why this is happening?

You were misunderstanding that answer. You're supposed to connect **from** the popup, and listen for disconnect from the background. — Xan, Aug 01 '14 at 08:14
@Xan How do you get the reference to `port` object from the background? — Maximus S, Aug 01 '14 at 19:12
A port represents one end of a 2-ended pipe. You have to listen for opening ports and establish the connection from the background. — Xan, Aug 01 '14 at 19:19

score 2 · Answer 1 · answered Aug 01 '14 at 04:51

2

Workaround was:

  addEventListener("unload", function (event) {
    doSomethingInPopup();
  }, true);

answered Aug 01 '14 at 04:51

Maximus S

(2017 update) Binding a function to the window.onunload event works for me, while the event listener does not – TheoretiCAL Feb 21 '17 at 04:32

1 Answers1