This post gives you an idea of what the code looks like in ECMAScript 6. This post doesn’t cover ever feature. But you will learn about how ECMAScript 6 relates to:
- Arrow Functions and Lexical this
- Default Function Parameters
- Arrow functions
Special thanks to Axel Rauschmayer for many of the snippets.
AmplifyJS is a set of components designed to solve common web application problems with a simplistic API. Amplify’s goal is to simplify all forms of data handling by providing a unified API for various data sources.
Your application may need more sophisticated control than is offered in Knockout, which provides for automatic updates in your view model. Knockout provides the observable pattern. But in the pattern described here Amplify’s publish/subscribe you do the publishing and the subscription.
In this post, you’ll learn the basics of how you can implement publish/subscribe pattern on the client using Amplify.
Continue reading “Single Page App – Separate UI from Model Using Publish, Subscribe Pattern using AmplifyJS”
When a project reaches a certain size, managing the script modules for a project starts to get tricky. You need to be sure to sequence the scripts in the right order, and you need to start seriously thinking about combining scripts together into a bundle for deployment, so that only one or a very small number of requests are made to load the scripts.
You may also want to load code on the fly, after page load.
RequireJS can help you manage the script modules, load them in the right order, and make it easy to combine the scripts later via the RequireJS optimizer without needing to change your markup. It also gives you an easy way to load scripts after the page has loaded, allowing you to spread out the download size over time.
Let’s put our revealing module pattern into asynchronous modules definition (AMD).
modular, we generally mean it’s composed of a set of highly decoupled, distinct pieces of functionality stored in modules. As you probably know, loose coupling facilitates easier maintainability of apps by removing dependencies where possible.
Loose coupling implies each component can operate or be tested independently of other components.
Tight coupling implies each component “knows” the details or inner workings of other components.
In just a few lines of code you can provide for architectural features above to improve from revealing module pattern to asynchornous module definition code. Here’s a look into why and how.
In my last post, Understanding Prototypes, you learned that you can use prototypes to implement inheritance. In this post, I will agree with Javier Uria and Pedro Teixeira who posts on MetaDuck, who advocates a way to implement inheritance using the revealing module pattern.
As you learned in my post on Scope, Namespaces, “use strict”, all variables are accessible from the global scope except variables that are declared within a function using the
var keyword. In this post, we add the idea of closures.
Closures are functions that retain a reference to their free variables.
And we show how you can use closures in building a robust revealing module pattern. Along the way, we explore some other patterns, such as the self-invoking anonymous function. And in the conclusion show how you can use the revealing module pattern to extend existing modules.
When you see Asynchronous Module Definition (AMD), you will see how asynchronous modules build on these concepts.
The work around is to use the revealing module pattern.
I am a huge fan of the revealing module pattern. It keeps your objects encapsulates and was easier to understand for me as a C# guy.