Establish Callback and Closure patterns Around Async Browser Behaviors

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JavaScript is full of inconsistent APIs. Wrapping those APIs in functions allows you to have full control over how to configure them and make them more reusable.

This becomes even more beneficial when dealing with the async nature of JavaScript. You'll learn how a broadcaster is a function that wraps another function (which we call listeners) and modifies the behavior. We will build up this pattern in a way that allows you to compose broadcasters together making your code more reusable.

You're in Section 02 of Composing Closures and Callbacks in JavaScript

Instructor

John Lindquist

John Lindquist is a co-founder of egghead.io John has spent the majority of his career developing Rich Web Applications. Before starting egghead.io, John worked at JetBrains as a WebStorm evangelist, and before that he was a Technical Architect at Isobar leading large teams in building the latest and greatest in web apps for the Air Force, HBO, and Bloomberg. Learn more about John's story with egghead here.

Course content (10 lessons)

1
Create a Function to Configure setTimeout
3m 9s
2
Return a Function to Cancel an Async Behavior
2m 43s
3
Wrap addEventListener in a Function for More Control
4m 15s
4
Create a Utility Function to Control setInterval
2m 3s
5
Combine Multiple Async Behaviors with a Merge Function
3m 58s
6
Use Lodash Curry When Functions Return Functions
2m 39s
7
Match Function Requirements with Lodash Partial and Flip
2m 2s
8
Create a Buffer to Pair Values Together with Zip
5m 19s
9
Pass an Array to a Callback with a forOf Function
2m 36s
10
Pass a Done Symbol when an Async Function is Done
4m 18s

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Instructor

John Lindquist