Javascript force GC collection? / Forcefully free object?

Question

I have a js function for playing any given sound using the Audio interface (creating a new instance for every call).

This works quite well, until about the 32nd call

Answer 1

This is not an exhaustive answer, but to the question "Is there any way to force the chrome js engine to do garbage collection?", a chromium.org guy replied:

In general, no, by design. For testing purposes there is a flag you can pass on the command line to enable a javascript command "window.gc()" to force garbage collection.

--js-flags '--expose_gc'

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UPDATE: However, as @plash noted in a comment below, this flag will only work in debug builds.