javascript-pass-by-?.js

function changeStuff(a, b, c) {
    a = a * 10;
    b.item = "changed";
    c = { item: "changed" };
}

var num = 10;
var obj1 = { item: "unchanged" };
var obj2 = { item: "unchanged" };
obj2 = { item: "changed" }

changeStuff(num, obj1, obj2);

console.log(num);
console.log(obj1.item);
console.log(obj2.item);


function addStuffInArray(array) {
    array.pop();
    console.log(array);
    array = [1,2,3];
}

let array = [1, 2, 3, 4, 5];

let arrayReferenceCopy = array;

arrayReferenceCopy.pop();

addStuffInArray(array);

console.log(array);