6 Pro Tips from React Developers

6 Pro Tips from React Developers

☞ 

#Reactjs #Developers

  • If you’re new to React, you could benefit from learning from the success—and failures—of React developers who’ve learned valuable lessons about the framework.
  • If you don’t need internal state or lifecycle methods on your component, use a functional component instead.
  • A functional component is a pure JavaScript function that accept as its argument and returns a React element.
  • But if you are using an ES6 class, you’ll need to bind manually since React doesn’t autobind the functions inside that component.
  • With React Developer Tools, available as a Google Chrome and Firefox extension, as well as a standalone app for other environments, you can quickly view your component hierarchy, inspect and edit a component’s props and state, and invoke methods on a component within the DevTools.

If you’re new to React, you could benefit from learning from the success—and failures—of React developers who’ve learned valuable lessons about the framework.
Continue reading “6 Pro Tips from React Developers”

Mern Stack Crud App Using create-react-app & React Redux Part 1.

Mern Stack Crud App Using create-react-app & React Redux Part 1.

☞  

#Reactjs #Redux

  • js – import express from ‘express’; – import path from ‘path’; – import bodyParser from ‘body-parser’; – import logger from ‘morgan’; – import mongoose from ‘mongoose’; – import bb from ‘express-busboy’;// import routes – import todoRoutes from define our app using express – const app = express();// express-busboy to parse…
  • /h2′); – });// start the server – app.listen(port,() = { – console.log(`App Server Listening at ${port}`); – });The above code sets up a express app, with an /api route points to a Let’s create this express from ‘express’;//import controller file – import * as todoController from get an instance of…
  • get(todoController.getTodo) – default router;Create a controller file todo.server.controller.js in a new folder called controllers to handle the CRUD functionality at the mongoose from ‘mongoose’;//import models – import Todo from const getTodos = (req,res) = { – Todo.find().
  • So create a new directory in the express-server folder called models and then create another file in that called mongoose from ‘mongoose’;var Schema = mongoose.Schema({ – createdAt:{ – type: Date, – default: Date.now – }, – fullName: String, – todoText: String – });export default mongoose.model(‘Todo’, Schema);Even though Node.js supports many…
  • js – import express from ‘express’; – import path from ‘path’; – import bodyParser from ‘body-parser’; – import logger from ‘morgan’; – import mongoose from ‘mongoose’; – import SourceMapSupport from ‘source-map-support’;// import routes – import todoRoutes from define our app using express – const app = express();// “*”); – “Origin,…

The MERN (MongoDB, Express, ReactJs, Node.js) stack is arguably the most popular stack for any web application these days. Our application is a basic crud application tutorial that will help you get…
Continue reading “Mern Stack Crud App Using create-react-app & React Redux Part 1.”

How to handle state in React. – React Ecosystem – Medium

How to handle state in React. The missing FAQ.

☞ 

#Reactjs #javascript

  • Each one corresponding to the way you create the component: – // Using React.createClass – var Counter = React.createClass({ – getInitialState: function() { – return {counter: 0}; – }, – …});// Using ES6 classes – class Counter extends React.Component { – constructor(props) { – super(props); – this.state = {counter: 0};…
  • Let’s exemplify: – // Don’t duplicate data from props in state – // Antipatternclass Component extends React.Component { – constructor(props) { – super(props); – this.state = {message: props.message}; – } – – render() { – return div{this.state.message}/div; – } – }The problem with the above example is it will only…
  • You can do better just by avoiding this situation: – // Better exampleclass Component extends React.Component { – render() { – return div{this.props.message}/div; – } – }The same applies when you hold state based on props calculation: – // Don’t hold state based on props calculation – // Antipatternclass Component…
  • // Antipatternclass Component extends React.Component { – constructor(props) { – super(props); – this.state = {count: 0}; – } – – render() { – return div{this.state.count}/div; – } – – componentDidMount() { – const interval = setInterval(() = ( – this.setState({count: this.state.count + 1}) – ), 1000); this.setState({interval}); – } componentWillUnmount()…
  • Let’s experiment a little bit to see what happens: – class Component extends React.Component { – constructor(props) { – super(props); – this.state = {count: 0}; – this.onClick = this.onClick.bind(this); – } – – render() { – return div } – – onClick() { – this.setState({count: this.state.count + 1}); – }…

Recently there has been a lot of debate about how to manage the state in React. Some claim that setState() doesn’t work as you might expect. That you have to externalize the state using a Flux-like…
Continue reading “How to handle state in React. – React Ecosystem – Medium”

6 Pro Tips from React Developers

6 Pro Tips from React Developers

☞ 

#Reactjs #Developers

  • If you’re new to React, you could benefit from learning from the success—and failures—of React developers who’ve learned valuable lessons about the framework.
  • If you don’t need internal state or lifecycle methods on your component, use a functional component instead.
  • A functional component is a pure JavaScript function that accept as its argument and returns a React element.
  • But if you are using an ES6 class, you’ll need to bind manually since React doesn’t autobind the functions inside that component.
  • With React Developer Tools, available as a Google Chrome and Firefox extension, as well as a standalone app for other environments, you can quickly view your component hierarchy, inspect and edit a component’s props and state, and invoke methods on a component within the DevTools.

If you’re new to React, you could benefit from learning from the success—and failures—of React developers who’ve learned valuable lessons about the framework.
Continue reading “6 Pro Tips from React Developers”

Promise-returning setState and forceUpdate by jamiebuilds · Pull Request #10 · reactjs/rfcs · GitHub

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[Rendered]
This RFC specifies setState and forceUpdate to return a promise when no callback is provided.
class DataFetcher extends React.Component {
state = {
loading: false,
error: null,
data: null,
};

async componentDidMount() {
await this.setState({ loading: true });
try {
let response = await fetch(this.props.url);
let data = await response.json();
await this.setState({ data, loading: false });
} catch (error) {
await this.setState({ error, loading: false });
}
};

render() {
return this.props.render(this.state);
}
}

Note: This example doesn’t rely so much on setState being applied before continuing. I can come up with a better example if people want it better demonstrated. I figured the data fetching example was easiest to understand.
Continue reading “Promise-returning setState and forceUpdate by jamiebuilds · Pull Request #10 · reactjs/rfcs · GitHub”

7 Best Javascript Frameworks 2018 For Web Developers

  • Node.js provides server-side scripting feature as javascript Frameworks to runs server-side scripts to produce dynamic web page content.
  • Angular JS 2 stand among the most popular Javascript frameworks which is used by many developers to build and maintain complex web applications.
  • It contains different functionalities similar to other javaScript frameworks contains  which support other parts of the application in a form of services & also improves the existing modules into ES6 modules.
  • Vue collaborates with WEEX, which is a cross-platform UI framework which uses Vue as its best Javascript frameworks for runtime which helps to use same Vue component syntax as well as other components that cannot be rendered in the Browser & also natively on iOS and Android.
  • Hence, Many JavaScript frameworks offer innovative features to manage complexity in web applications with an integrated development toolkit that enables rapid iteration.

JavaScript is a scripting language used in web development to add dynamic and interactive elements to the websites using various Javascript Frameworks
Continue reading “7 Best Javascript Frameworks 2018 For Web Developers”

An IDE for React.js – Arnaud – Medium

An IDE for React.js

☞ 

#Reactjs #javascript

  • Well, Reacto is a suggestion to the react community.
  • You can also get suggestions from npm registry right from Reacto.
  • Start creating new class-based react components now, and see how it looks anytime you’ll edit the file.
  • Today, I really hope that I can give something back to all of you, so that new developers start programming with the right tools, for free.
  • If you have any suggestions or feedback, feel free to comment below or open a new issue on github using “feedback” and “idea” labels.

It all started with a need for a software, free, that would provide everything for react development. I started working on this personal project two months ago and it is with an extreme joy that I am…
Continue reading “An IDE for React.js – Arnaud – Medium”

React-basic: Description of the conceptual model of React

  • The core premise for React is that UIs are simply a projection of data into a different form of data.
  • My actual mental model of this is that they return the next version of state during an “update” pass.
  • Most UIs are some form of lists that then produce multiple different values for each item in the list.
  • We can move the logic of extracting and passing state to a low-level function that we reuse a lot.
  • We can use the same trick we used for state and pass a memoization cache through the composable function.

GitHub is where people build software. More than 27 million people use GitHub to discover, fork, and contribute to over 80 million projects.
Continue reading “React-basic: Description of the conceptual model of React”

Mern Stack Crud App Using create-react-app & React Redux Part 1.

Mern Stack Crud App Using create-react-app & React Redux Part 1.

☞  

#Reactjs #Redux

  • js – import express from ‘express’; – import path from ‘path’; – import bodyParser from ‘body-parser’; – import logger from ‘morgan’; – import mongoose from ‘mongoose’; – import bb from ‘express-busboy’;// import routes – import todoRoutes from define our app using express – const app = express();// express-busboy to parse…
  • /h2′); – });// start the server – app.listen(port,() = { – console.log(`App Server Listening at ${port}`); – });The above code sets up a express app, with an /api route points to a Let’s create this express from ‘express’;//import controller file – import * as todoController from get an instance of…
  • get(todoController.getTodo) – default router;Create a controller file todo.server.controller.js in a new folder called controllers to handle the CRUD functionality at the mongoose from ‘mongoose’;//import models – import Todo from const getTodos = (req,res) = { – Todo.find().
  • So create a new directory in the express-server folder called models and then create another file in that called mongoose from ‘mongoose’;var Schema = mongoose.Schema({ – createdAt:{ – type: Date, – default: Date.now – }, – fullName: String, – todoText: String – });export default mongoose.model(‘Todo’, Schema);Even though Node.js supports many…
  • js – import express from ‘express’; – import path from ‘path’; – import bodyParser from ‘body-parser’; – import logger from ‘morgan’; – import mongoose from ‘mongoose’; – import SourceMapSupport from ‘source-map-support’;// import routes – import todoRoutes from define our app using express – const app = express();// “*”); – “Origin,…

The MERN (MongoDB, Express, ReactJs, Node.js) stack is arguably the most popular stack for any web application these days. Our application is a basic crud application tutorial that will help you get…
Continue reading “Mern Stack Crud App Using create-react-app & React Redux Part 1.”

An IDE for React.js – Arnaud – Medium

An IDE for React.js

☞ 

#Reactjs #javascript

  • Well, Reacto is a suggestion to the react community.
  • You can also get suggestions from npm registry right from Reacto.
  • Start creating new class-based react components now, and see how it looks anytime you’ll edit the file.
  • Today, I really hope that I can give something back to all of you, so that new developers start programming with the right tools, for free.
  • If you have any suggestions or feedback, feel free to comment below or open a new issue on github using “feedback” and “idea” labels.

It all started with a need for a software, free, that would provide everything for react development. I started working on this personal project two months ago and it is with an extreme joy that I am…
Continue reading “An IDE for React.js – Arnaud – Medium”