Is there a way to change a variable’s value given its name in a function?

Question

Is what I'm trying to accomplish possible? I hear using globalThis is the best alternative to window, frames, etc. but I can't get it to function. Any help would be appreciated!

var x = true;
var y = true;

function makeFalse(changeVar) {
  globalThis.changeVar = false;
}

makeFalse("x");
makeFalse("y");

console.log(x); //expecting: false, returning: true
console.log(y); //expecting: false, returning: true

Answer 1

You can update them using global window object or with this or with globalThis inside the function.

this and globalThis inside makeFalse function refers to global window object itself.

 var x = true; var y = true; function makeFalse(changeVar) { // window[changeVar] = false; // this[changeVar] = false; globalThis[changeVar] = false; } makeFalse("x"); makeFalse("y"); console.log(x); //expecting: false, returning: true console.log(y);