React Higher-Order Components in TypeScript made simple

  • These attributes were chosen to illustrate all the aspects of HOCs while keeping the HOC as simple as possible.PropsThere are three types of props we need to consider when creating a HOC: OriginalProps, ExternalProps and InjectedProps.OriginalProps are props of the wrapped component.
  • The state of the HOC is simple, just the count of the clicksOptionsAs stated before, HOC is a function that takes a component and returns a component.While this is true, many HOCs take the form of curried HOC factories (like the mentioned connect from react-redux) that take a configuration object…
  • If you need to interact with props or states from here, the only way to do it is to specify options as functions, that take the props or states as arguments.For ClickCounted the options are simple – a flag indicating whether to console.log on click:Putting it all togetherHaving declared all the…
  • Now that we have the signature, all that’s left is to implement the HOC:First, we define the type alias for the resulting component’s props — the TOriginalProps ExternalProps to simplify its reuse.
  • Props and state are passed to it with whatever was in the OriginalProps along with the clickCount from the HOC state.Using the HOCTo illustrate how to use our HOC, we create a Demo component, that displays a different text depending on the amount of clicks and a custom message.Notice the type…

On a simple React Higher-Order Component, the process of writing them in TypeScript is demonstrated along with advice and rationals behind the type declarations
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Deploy an AngularJS Ecommerce App in 4 Steps – Hacker Noon

  • Deploy an AngularJS Ecommerce App in 4 StepsThis Ecommerce App is built using AngularJS, Node.js and Cosmic JS.In this blog I will demonstrate how to Install and Deploy an AngularJS Ecommerce Application built using AngularJS, Node.js and Cosmic JS.
  • Simply install and deploy the application, and within two clicks you can set up your Stripe keys as Environment Variables to begin accepting orders and processing transactions with your new AngularJS Ecommerce App.2.
  • Install the AngularJS Ecommerce AppCosmic JS gives you the ability to filter between utilities and programming languages.Cosmic JS Ecommerce App3.
  • Connect Stripe KeysAfter you deploy, you can set your Stripe keys as environment variables by going to Your Bucket Deploy Web App Set Environment Variables.Cosmic JS is an API-first cloud-based content management platform that makes it easy to manage applications and content.
  • If you have questions about the Cosmic JS API, please reach out to the founders on Twitter or Slack.Carson Gibbons is the Co-Founder CMO of Cosmic JS, an API-first Cloud-based Content Management Platform that decouples content from code, allowing devs to build slick apps and websites in any programming language they want.

In this blog I will demonstrate how to Install and Deploy an AngularJS Ecommerce Application built using AngularJS, Node.js and Cosmic JS. This Ecommerce Application allows you to process orders from…
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setState takes a function – learnreact

setState takes a function  #setstate #react #javascript #reactjs

  • setState takes a functionA gentle introduction to setState, pt 3.
  • Component state can be updated with object or a function.This is a confusing feature.
  • So, let’s explore both forms of setState and see which events they are best suited for.setState with an objectThe object form of setState is great when setting state that isn’t concerned with previous state.this.setState({ name: “Michael” });Consider an input event handler that updates state as you type.
  • We know the new value and don’t care what the previous value was.
  • So, we replace it wholesale.handleChange(event) { return this.setState({ name: event.target.value }));The object form is great for this.

This is a confusing feature. So, let’s explore both forms of setState and see which events they are best suited for. Consider an input event handler that updates state as you type. We know the new…
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Redux, Immutability, and Higher Order Components

Redux, immutability, and higher order components:  #ReactJS

  • A higher order component is exactly what it sounds like — it is the React component equivalent of a higher order function.
  • In React, a higher order component is a function that accepts a component and returns an enhanced component with superhero abilities.
  • A simple example of a higher order function in Haskell that takes a function and applies it twice to something.
  • , connect() is, through mapDispatchToProps() , subscribing the TodoList component to a change handler that will toggle a todo when the todo is clicked.
  • Well, arguably, one of the key concepts when using Redux with React lies in a higher order component: connect() .

Read the full article, click here.


@ReactiveConf: “Redux, immutability, and higher order components: #ReactJS”


As I wrote in a previous blog post, immutability is an important concept that can bring many benefits to development. In fact, it’s been embraced by javascript land, most notably by the ultra-popular framework, Redux.


Redux, Immutability, and Higher Order Components