javascript - is there a way to execute a function when I have its name in a string

Question

Consider I have a name of a function which does not require any argument in a var -

var fn = "foo";

Can I execute it in some or similar like this -

eval(fn);

It does not work. Please suggest.

My definition of function will look like this -

function foo() {
  ....do something....
}

Answer 1

eval は使用しないでください。

関数がグローバルスコープにある場合は、単に

var fn = "foo";
window[fn]();

デモ

Answer 2

これを試して

eval(fn)();

またはこれ

eval(fn + "()");