I have question in Javascript, what is the function that returns the number of functions are used in the program?

Question

Java script

Answer 1

function maths(a, b) {
function sum() {
return a + b;
}

function subtract() {
return a - b;
}
return {sum, subtract}
}

const fns = maths(5,3);

const total = fns.sum();
console.log(total);

const diff = fns.subtract();
console.log(diff);

https://code.sololearn.com/cp7FG0J73kNs/?ref=app

JavaScript and Node.js have the same basic functionality

Answer 2

as far as I know there is no such function... at least in web context (don't know if nodejs has such builtin function or if there exist a module to install such function)...

not in ES specifications, in all cases ^^

Answer 3

OK thanks for replying.

Answer 4

That's means, there is no such function do that in JS right?

Answer 5

yes, as far as I know...