JSFiddle - React, Tailwind, and code Playground

JavaScript

function one(a) {
    console.log("one called for " + a);

    if (a == 1) {
        function inner(b) {
            console.log("inner called for " + b);
        }
        inner(123);
    }

    inner(456);
}

one(1);
one(2);
one(3);