JSFiddle - React, Tailwind, and code Playground

JavaScript

var x = 6;
var y = 4;
var a = function(b) { 
    return function(c) { 
        return y + b + c; 
    } 
};

x = 2;
y = 5;

var fn = a(x);

console.log(fn(5));

x = 1;
y = 3;

console.log(fn(5));