jit.matrixset and javascript

Peter Nyboer's icon

I feel like I've asked before, but I can't find it searching the forum...so...
Is it possible to use jit.matrixset in a javascript? It seems not, when I try to instantiate it:
var memory = new JitterObject("jit.matrixset");

I get
• error: jsjitterobject_Constructor: null class pointer jit_matrixset