JavaScript Read-Eval-Print Loop (JS-REPL)
Let's Work with Python! What's A REPL? (Help)

console.log("Hello World!");

function foo(items) {
    for (let i = 0; i < items; i++) 
    {
        console.log("Zip Code Rocks " + i + "! "); 
    }
}

foo(3);

// console.log() output will appear here.