Eric Njanga Web Developer / Technologist

Eric Njanga Web Developer / Technologist

Thinking In React: How to successfully plan an application

React is a powerful JavaScript framework built around two basic rules: Data flows only one way: From parent to child components (down the component hierarchy) Component restricted scope: A component can only update its own state Being able to build... View Article
Eric Njanga Jan 26, 2018

2018 Resolutions

2018 is here! Wow, it feels like the previous year just flew by. I feel greatful about 2017 because I challenged myself at many things, made lots of personal discoveries and learned tremendously. But, I also feel the need to improve... View Article
Eric Njanga Jan 01, 2018

Functional component: Definition

Definition A functional component is a JavaScript function that accepts a “props” object argument with data and returns a React element.   Usage A functional component has limited features and is mostly used for: Rendering purposes: It simply renders a... View Article
Eric Njanga Mar 06, 2018

Interesting facts about a component state

Each time this.setState is called, an update to the component is scheduled, this causes React to merge in the passed state update and rerender the component along with its descendants
Eric Njanga Mar 03, 2018

Reusing code between components in React

Composition Composition in React is the action of using components as building blocks for other components using the techniques of “containment” or “specialization”. Containment Containment is all about creating “empty spots” in a component for any random component to fill.You... View Article
Eric Njanga Dec 29, 2017

Sharing state between two or more components in React

Lifting state up In React, sharing state between components can only be done by moving it up to the closest common ancestor of the components that need it. We call it “lifting state up”. Lifting state involves writing more “boilerplate” code than two-way binding... View Article
Eric Njanga Dec 28, 2017

CSS Grid and website prototyping

CSS Grid can be used as a website prototyping tool. Supposing we’d like to try a couple of arrangement possibilities for a layout, CSS Grid is an excellent choice and we’ll see why! Using Named Areas CSS Grid “Named Areas”... View Article
Eric Njanga Dec 27, 2017

Lorsque la confience vous quitte

Les ressentiments C’est une cruelle sensation que de perdre confience en soit! La moindre chose vous intimide ou vous inquiète. Vous vous imaginez des menaces qui n’existent même pas. Des propos parfois innocent à votre égard vous donnent l’air d’être des... View Article
Eric Njanga Dec 25, 2017

Controlled Components

Let’s look at a controlled component as a tool in another component’s hand. Such a component have no “state” on its own and exists solely for the purpose of facilitating the application’s flow, for instance: A component which receives its... View Article
Eric Njanga Dec 21, 2017

Canadian Government Startup Initiative

The Canadian government just recently launched a program aimed at modernizing its digital services. The rise of tech giants and their disruptive impact on the Canadian way of life (shopping, information consumption, entertainment, …) has pushed the government into seriously considering migrating... View Article
Eric Njanga Dec 16, 2017