What might cause a game to gradually slow down in fps?

[mileung]

I have a game that is only 11mb right now, but after finally wrapping the game with CocoonJS, I noticed the the game would go from 60fps to <15fps in about 10 seconds.  I think the only way the game could be slowing down is having something like an infinite array; I have an array that I push to to get the direction of a swipe, then I set that array to an empty array to prevent an infinite array.

[Skeptron]

A memory leak of some sort is very likely to cause your issue. Did you try to completely delete the array? Like delete myVar;

 

But the issue could be elsewhere. You could try Phaser debug plugin or Chrome canvas inspector for more info.