Conflict using window.onbeforeunload

[brickgale]

I'm using window.onbeforeunload to open a popup or confirmation alert to leave the web app, I notice that when I run window.onbeforeunload on devtools console, it returns skyway's function, not the function i provided to show and alert. Is there a way to override it?

[brickgale]

I override it with my own function, now my problem is how do i get the previous function work as it always do. window.onbeforeunload=function(b){a.destroy()}} on https://skyway.io/dist/0.3/peer.js...

It seems it needs window.onbeforeunload to close some sockets.

[yusuke84]

In the window.onbeforeunload event, processing to disconnect from the signaling server is being executed. The reasons are as follows.

    // Close sockets before unloading window
    // Necessary as sometimes the brower does not close ws / xhr property
    // especially for FF

Ref: https://github.com/nttcom/peerjs/blob/master/lib/peer.js#L145