How can I have variable (string) in function's name in javascript?

Question

I am trying to call a function whose name is in a variable like this:

const funcNames = [
  "func1",
  "func2",
  "func3"
];

someElem.funcNames[0](someArg);

Here I want funcName's 0 index element to be the name of the function I want to call on someElem (with args)

I hope I was able to explain

and I have seen this but its not what I want.

Thanks