setInterval Spotify apps

Question

I'm having trouble using setInterval/clearInterval.

I've tried to do something like this: int = setInterval(someFunction(), 1000); but it only call someFunction() once, instead of once every second?

So I tried to do this: int = setInterval("someFunction()", 1000); and it actually works in some way, because it gives me this error Uncaught ReferenceError: someFunction is not defined every second?

Why? D:

Answer 1

setInterval takes two arguments: a function, and a time in milliseconds for the time between calls.

Your first example is wrong because it doesn't give a function as argument, it executes the function and passes the result as the first argument. Just change it to setInterval(someFunction, 1000) and it'll work.

Answer 2

This works fine for me:

this.interval = setInterval(function() {
    console.log("tick");
}.bind(this), 100);