- With JSX, you pass a function as the event handler rather than a string.ComponentsReact is made up of container and presentational components or as Dan Abramov coined it, smart and dumb.
- Presentational components are concerned with [how things look], receive data and callbacks with exclusively props and rarely have their own state.
- Container components concerned with [how things work], provide application data and fetch data.
- It is just another way of building an MVC framework where the presentational components are the views and container the controllers.LifecycleThe lifecycle of a component are customizable and goes through different phases when the components are in a state of change.
- A prop supports or keeps something in position whereas a state is a condition that is susceptible to change.Before I dive right into my final project, I need to figure out the proper structure of my application.
I have made it to the final level. I’ve acquired the XP and skillset needed to ascend to the top and attain the apex of web development. Mind you, this is just the first hurdle in my programming…
Continue reading “Relax with React – Natasha Gitlin – Medium”
- It was okay to use objects to update state in earlier versions of React, and we could do the same with Fiber, but by using functions instead we would be complementing the efficiency of fiber for our state updates: – – This is due to the new asynchronous rendering.
- The following will be invalid in React 15 – – to get it to work we have to wrap it in a div and that div will get rendered to the DOM, as well as: – – Each of the components will resolve into their full DOM breakdown, and perhaps…
- We could overlook the performance cost of redundant element wrappers in the DOM but as we have learned from Grace Hopper, every little optimization matters – – This is why it is great that we can gain back some performance with this in React 16.
- You could have an element with attributes like this: – – This opens room for one of the things that Vue has had as an edge over React — the ability to break SVG into components as briefly mentioned in the vue data visualization article and also better compatibility with…
- You see something similar with the layout of templating engines but let us look at how React handles this within a component’s render method declaratively: – – given that we have our app HTML as – – For an applicable example, check here – – The stack was the predecessor…
Whether you’re new to React or an old React cat, here is an overview of 5 React 16 features that will make your life so. much. easier! You can’t miss this!
Continue reading “5 React 16 Features You Can’t Live Without”
- ) form so you can see how child components update the parent component’s state, and how the parent then updates the child component via props ( unidirectional data flow ).
- The array of letters is joined again, and the new string is set to component state.
- All of the form element components in this post are pure functional components.
- Regular, or dumb, components receive data from their parent (container) component.
- The component is very similar to the components covered already.
This tutorial covers controlled form components, and best practices like immutability and unidirectional data flow. There’re plenty of examples to borrow and tweak for use in your own projects.
Continue reading “React.js Forms: Controlled Components”
- 2. Created a dispatcher method This is the only way to change the state of the application.
- State is read-only The only way to mutate the state is to emit an action , an object describing what happened.
- Dispatcher is called along with the action type which indicates how the state has to be changed.
- We can now use any rendering logic to create a UI based on the state of the application and if any user actions needs to change the state, it has to go through dispatcher.
- 4. Created a method to subscribe for the state change This method is used when an app needs to listen to the changes happening to the state.
Read the full article, click here.
@OpenCoconut: “#Redux explained in 4 simple steps, good #tutorial by @narendra_shetty 👏 📚 #reactjs”
How I learnt Redux concepts — Crowdfire Engineering
- Each connected component is forced to shallow compare in the shouldComponentUpdate lifecycle method because it doesn’t know if it just received a state update which is relevant or not.
- The above gives us two action streams that we can use to reduce state with.
- A state stream is effectively the result of reducing a stream of actions.
- As mentioned before, the two core building blocks of a module’s state stream is its action stream and its reducer (of said action stream).
- Accessing State in Action Streams
Read the full article, click here.
@MarkusCtz: “Why RxJS is the Better Tool for Unidirectional Data Flow: @christianalfoni @BenLesh @dan_abramov #reactjs #redux #rx”
Why RxJS is the Better Tool for Unidirectional Data Flow
State Streams and React — Medium