Book Image

MobX Quick Start Guide

By : Pavan Podila, Michel Weststrate
Book Image

MobX Quick Start Guide

By: Pavan Podila, Michel Weststrate

Overview of this book

MobX is a simple and highly scalable state management library in JavaScript. Its abstractions can help you manage state in small to extremely large applications. However, if you are just starting out, it is essential to have a guide that can help you take the first steps. This book aims to be that guide that will equip you with the skills needed to use MobX and effectively handle the state management aspects of your application. You will first learn about observables, actions, and reactions: the core concepts of MobX. To see how MobX really shines and simplifies state management, you'll work through some real-world use cases. Building on these core concepts and use cases, you will learn about advanced MobX, its APIs, and libraries that extend MobX. By the end of this book, you will not only have a solid conceptual understanding of MobX, but also practical experience. You will gain the confidence to tackle many of the common state management problems in your own projects.
Table of Contents (17 chapters)
Title Page
Packt Upsell

The shape of data

The data that we deal with within an application comes in all shapes and sizes. However, these different shapes are fairly limited and can be listed as:

  • Singular values: These include primitives like numbers, booleans, strings, null, undefined, dates, and so on.
  • Lists: Your typical list of items where each item is one of a kind. It is generally a good practice to avoid putting items of different data types in the same list. This creates homogenous lists which are easy to reason about.
  • Hierarchy: Many of the structures we see in UI are hierarchical, like a hierarchy of files and f0lders, parent-child relationships, groups and items, and so on.
  • Composite: A combination of some or all of the preceding shapes. Most real world data is in this form.

MobX gives us the API to model each of these shapes and we have already seen some examples of this in earlier chapters. However, MobX makes one distinction between singular values and other kinds like arrays and maps. This is reflected...