setTimeout

This one will run a certain time after the document loads. So if i want to execute something 5 seconds (or so) after the page loads i would do this.

You will need to check your console log to see the results for this one.

function doSomething() {
  console.log("doing something!");
}

setTimeout(doSomething, 5000);

setInterval

setInterval is for if you would like to loop something over and over again usually.

setInterval(function(){ console.log("doing something every 3000ms"); }, 3000);

What cool stuff can we do with this?

Hmm... let me think

What if we add and remove a class from a div and animate it with css?

another example of this can be found here using toggleClass and transitions