[easybake]

> My mild guess is when resolve is called .then part happens, and when reject is called .catch part happens.

Yes, calling `resolve` or `reject` will "fulfill" the Promise (that is, the control-flow then returns to the context in which the Promise was invoked.)

Your example is missing a detail which makes Promises useful. Both `resolve` and `reject` accept an argument which is passed to the callback function (`example.then(handleSuccess)` and `example.catch(handleCatch)`):

  const handlePromise = function(resolve, reject) {
    let x = 20;
    let y = 20;

    // return "Promises will not 'return' a value, they must be resolved or rejected";

    if (x == y) 
      resolve(true);
    
    // reject(false)
    reject(new Error("x != y"))
  }

  const handleSuccess = function(value) {
    console.log(value);
  }

  const handleCatch = function(err) {
    console.log(err);
  }

  const example = new Promise(handlePromise);

  example
    .then(handleSuccess)
    .catch(handleCatch);

> I feel so dumb for asynchronous javascript.

You are in good company.

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...