hamptonmoore / Code.org-Promises

Adding Promises to code.org's App Lab

Code.org-Promises

Adding Promises to code.org's App Lab

The Story

After years (1) of being subjected to using callbacks and the word 'function' in AP Comp. Sci. Principles, something had to change. We still don't have fat arrow functions (RIP), but we can do that other thing (I think).

Usage

It works identically to how normal JS promises do (I'm Hoping), and all you have to do is paste the contents of Promise.js to the top (or bottom, I don't really care) of your project and it should work. MDN has a great article on Promises here.

Example

  var thing = new Promise(function(resolve, reject) {
    setTimeout(function() {
      resolve("Resolved");
    }, 1000);
    setTimeout(function() {
      reject("Rejected");
    }, 3000);
  });

  thing
    .then(function(res) {
      console.log(res);
    })
    .then(function() {
      console.log("Hey");
    })
    .finally(function() {
      console.log("Finally Done :)");
    })
    .catch(function(err){
      console.log(err);
    });

Closing

If this works for you (and you're still here), I hope it can help you better your code. Please bring up an issue if you find any errors or have a suggestion. Peace Out😃