Using JavaScript reflection to invoke a function [duplicate]

Question

I am new to JavaScript and am struggling with how reflection works there. What I want to do is: Given a String which is the function's name, invoke that function. E.g. var myString = "myFunctionName()" is given and then I want to invoke myFunctionName() using myString somehow.

Is this possible and how?

Thanks in advance!

Answer 1

It all depends on the context in which the function is declared.

For the browser's window context:

function test() {
  console.log('Hello world!');
}

const string = 'test';

window[string]();

Answer 2

You can try:

function myFunctionName() {
  // do something...
}

var myString = "myFunctionName()";

eval(myString)