JSFiddle - React, Tailwind, and code Playground

JavaScript

function test(a, b){
     a = a + 2;
     b = b + 5;
     return {a:a,b:b};
    }

    var a = 1;
    var b = 2;

    var test = test(a, b);

    alert(test.a);
    alert(test.b);