Recursion is a process(a function in our case) that calls itself.

• JSON.parse / JSON.stringify
• document.getElementById and DOM traversal algorithms
• Object traversal
• Very common with more complex algorithms
• It's sometimes a cleaner alternative to iteration

Invoke the same function with a different input until you reach your base case!

The condition when the recursion ends.

• Base Case
• Different Input

function countDown(num){
    if(num <= 0) {
        console.log("All done!");
        return;
    }
    console.log(num);
    num--;
    countDown(num);
}

function countDown(num){
    if(num <= 0) {
        console.log("All done!");
        return;
    }
    console.log(num);
    num--;
    countDown(num);
}