This code snippet is used in Testing JavaScript Code using Jasmine JavaScript Tutorial on SFDC Stop

calculator.js

// * Library to perform arithmetic operations

function add(a, b) {
    return a+b;
}

function sub(a, b) {
    return a-b;
}

function mul(a, b) {
    return a*b;
}

function div(a, b) {
    return a/b;
}