These docs are old and won’t be updated. Go to react.dev for the new React docs. These new documentation pages teach modern React: React.Component This page contains a detailed API reference for the React component class definition. It assumes you’re familiar with fundamental React concepts, such as Components and Props, as well as State and Lifecycle. If you’re not, read them first. Overview Reac
When writing a complex React app, you might find yourself struggling with rendering performance issues. This article will give you an overview of the tools and techniques used to detect and fix this performance bottlenecks. The Problem is in React’s rendering processWhen a component calls `this.setState()`, React re-renders the DOM in two stages: React’s internal Virtual DOM is re-renderedThe diff
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For both iOS and AndroidHaving worked with Xamarin Forms on my current project for the last 14 months, I am considering using React Native for my next project. First, I have to convince myself that for everything I have done in Xamarin Forms, I should be able to do the exact same thing in React Native as easily or more easily. One thing that’s super easy to do in Xamarin Forms is navigation which
There have been a quite a few ways to create a scrolling list in React Native, most notably they have been the ScrollView and the ListView. Each have their strengths and weaknesses. Since v0.43 of React Native we’ve had access to two new list views, the FlatList and the SectionList. Today we will take a look at how to use the FlatList component. What is it?What is the FlatList component? It’s an e
はじめに 最近React Nativeをいじっていて、react-native-router-flux周りの知見が溜まってきたので忘れないうちに書き留めておこうと思う。 react-native-router-fluxとは 簡単に言うと、ネイティブアプリの画面遷移をreact-routerっぽく書けるようにするライブラリ。 React Nativeには画面遷移を扱う仕組みとしてデフォルトでNavigatorが用意されているんだけど、SPAを作ったことのある人にはreact-native-router-fluxの方がとっつきやすいのかなと思う。 react-native-router-fluxでは、次のようにルーティングを書くことができる。 // App.js import { Router, Scene } from 'react-native-router-flux'; export d
Fetch is a fantastic networking API that was chosen for React Native, but because it is relatively new, there are a few things to be aware of when using it. The React Native Documentation does include a single example, which is a good start, but I want to add a few more things that may not be readily obvious. GET requestsSending a GET request to a JSON API is the simplest use case. Just call fetch
Deprecated. Use react-native-community/react-native-webview instead. WebView renders web content in a native view. import React, { Component } from 'react'; import { WebView } from 'react-native'; class MyWeb extends Component { render() { return ( <WebView source={{ uri: 'https://github.com/facebook/react-native' }} style={{ marginTop: 20 }} /> ); } } Minimal example with inline HTML: import Reac
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