How do i get the length of a Float64Array as a value?

Scope Values of JavaScript Program

Hey guys,

Got a question i couldn't find the answer to so throwing it out there. I've attempted to do something like the following:

if(tracker.classifiers.Float64Array.length=='33871'){

However this doesn't work and i just can't get my head around how to get the value of the length of the Float64Array to use it as the value for a if statement.

See picture for what the hell i'm talking about :)

Any ideas?