如何使用 Axios 在 React 中创建实时搜索过滤器模块

假设您正在访问一个站点，并且如果没有搜索或过滤数据的选项或模块，您希望获得所需的信息。

能有多尴尬？

我们会尽力消除尴尬。因此，我们决定向您介绍 React 实时搜索过滤器功能。

使用实时搜索过滤器模块可以轻松发现内容。我的意思是，谁不想快速获得所需的信息？

在本指南中，我们将帮助您了解如何在 React 应用程序中创建实时搜索组件。实时搜索组件始终是动态的，因此我们将使用模拟实际数据的 REST API。

要从服务器检索记录，我们需要发出 HTTP GET 请求，并在 React 中发出 HTTP 请求，我们将使用 Axios 包。

此外，我们将使用 React Lifecycle 方法在 React 中创建搜索过滤器。生命周期方法帮助我们管理类组件的状态，并在 React 类组件中数据流动或更新时更新数据。

让我们开始编写 React 搜索栏模块。

React Axios 使用 REST API 构建实时搜索组件示例

• 第 1 步：构建 React 项目
• 第 2 步：安装引导程序包
• 第三步：安装 Axios 包
• 第 4 步：构建实时搜索过滤器
• 第 5 步：更新 App Js 文件
• 第 6 步：运行开发服务器

构建反应项目

要开始开发，请确保在您的系统上安装 node 和 npm 工具。

在您的控制台上键入命令，按回车键开始应用程序安装过程。

npx create-react-app react-demo

不要忘记进入应用程序目录。

cd live-demo

安装引导程序包

为了创建搜索过滤器模块的设计，我们将使用 Bootstrap 库。它将大大减少您的 CSS 编写时间。

继续，在控制台上添加命令并按 Enter。

npm install bootstrap

安装 Axios 包

为了处理 HTTP 请求，我们需要在我们的项目中添加 axios 库。

只需一个命令即可安装 Axios。

npm install axios

构建实时搜索过滤器

在您的反应项目文件夹中再次创建一个新文件夹，将其命名为components/。

此外，在 components 文件夹中创建一个 LiveSearchFilter.js 文件。之后，将所有给定的代码附加到文件中。

import React, { Component } from 'react'
import axios from 'axios'
class LiveSearchFilter extends Component {
  constructor(props) {
    super(props)
    this.state = {
      Profile: [],
    }
    this.cancelToken = ''
    this.getVal = this.getVal.bind(this)
    this.node = React.createRef()
  }
  componentDidMount() {
    document.addEventListener('mousedown', this.getVal)
  }
  componentWillUnmount() {
    document.removeEventListener('mousedown', this.getVal)
  }
  getVal = (e) => {
    if (this.node.current.contains(e.target)) {
      return
    }
    this.setState({
      userList: [],
    })
  }
  onChange = async (e) => {
    if (this.cancelToken) {
      this.cancelToken.cancel()
    }
    this.cancelToken = axios.CancelToken.source()
    await axios
      .get('https://jsonplaceholder.typicode.com/users', {
        cancelToken: this.cancelToken.token,
      })
      .then((res) => {
        this.setState({
          Profile: res.data,
        })
      })
      .catch((e) => {
        if (axios.isCancel(e) || e) {
          console.log('Data not found.')
        }
      })
    let stringKwd = e.target.value.toLowerCase()
    let filterData = this.state.Profile.filter((item) => {
      return item.username.toLowerCase().indexOf(stringKwd) !== -1
    })
    this.setState({
      Profile: filterData,
    })
  }
  render() {
    return (
      <>
        <h2>React Search Filter Example</h2>
        <div className="input-group mt-3">
          <input
            type="text"
            className="form-control"
            placeholder="Find ..."
            ref={this.node}
            onClick={this.getVal}
            onChange={this.onChange}
          />
        </div>
        <div className="list-group">
          {this.state.Profile.map((item) => {
            return (
              <a
                className="list-group-item list-group-item-action"
                key={item.id}
              >
                {item.name}
              </a>
            )
          })}
        </div>
      </>
    )
  }
}
export default LiveSearchFilter;

稍后在顶部导入 Axios 将允许我们发出 HTTP Get 请求。

使用 this.state 属性设置组件的状态，其中 Profile 是保存用户数据的数组。

每次按下关键字时，请求都会发送到服务器。这确实会影响性能。要解决此类问题，请使用 cancelToken 对象。它将阻止发送额外的请求。

我们正在使用简单的数组搜索和过滤方法。filter() 方法根据传递的条件返回结果。因此 indexOf() 方法仅返回与布尔形式提供的值匹配的那些结果的索引。

最后，我们正在更新实时搜索模块的当前状态，并在搜索过滤器下拉列表中显示过滤结果。

更新应用程序 Js 文件

要在浏览器上显示搜索组件，我们必须先注册到App.js文件中。

import React from 'react'
import 'bootstrap/dist/css/bootstrap.min.css'
import LiveSearchFilter from './components/LiveSearchFilter.js'
function App() {
  return (
    <div className='container mt-3'>
      <LiveSearchFilter />
    </div>
  )
}
export default App;

运行开发服务器

最后一步是运行反应服务器，您可以使用给定的命令调用服务器。

npm start

现在，您可以在浏览器上查看正在运行的应用程序。

http://localhost:3000

这是最终输出：

结论

实时搜索让用户可以通过输入字段找到预期的内容。在实时搜索过滤器中，我们在输入框中键入，因为关键字与服务器中存在的数据相匹配。过滤后的结果开始出现在建议列表中。

React 生命周期方法在类组件中起着至关重要的作用，它们几乎与功能组件中的 Hooks 相同。

我们向您展示了一种使用 Axios、REST API 和 React 钩子在 React 中实现实时搜索的高效且动态的方法。

来源：https ://www.positronx.io/how-to-create-live-search-filter-module-in-react-with-axios/

#axios #react-native #restapi 

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How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

• Performance: It delivers optimal performance.
• Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
• UI design: React Native enables you to design simple and responsive UI for your mobile app.
• 3rd party plugins: This framework supports 3rd party plugins.
• Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

• Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
• Near-native user experience: React Native provides several native components, and these are platform agnostic.
• The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

#android app #frontend #ios app #mobile app development #benefits of react native #is react native good for mobile app development #native vs #pros and cons of react native #react mobile development #react native development #react native experience #react native framework #react native ios vs android #react native pros and cons #react native vs android #react native vs native #react native vs native performance #react vs native #why react native #why use react native

How to Select and Hire the Best React JS and React Native Developers?

Since March 2020 reached 556 million monthly downloads have increased, It shows that React JS has been steadily growing. React.js also provides a desirable amount of pliancy and efficiency for developing innovative solutions with interactive user interfaces. It’s no surprise that an increasing number of businesses are adopting this technology. How do you select and recruit React.js developers who will propel your project forward? How much does a React developer make? We’ll bring you here all the details you need.

What is React.js?

Facebook built and maintains React.js, an open-source JavaScript library for designing development tools. React.js is used to create single-page applications (SPAs) that can be used in conjunction with React Native to develop native cross-platform apps.

React vs React Native

• React Native is a platform that uses a collection of mobile-specific components provided by the React kit, while React.js is a JavaScript-based library.
• React.js and React Native have similar syntax and workflows, but their implementation is quite different.
• React Native is designed to create native mobile apps that are distinct from those created in Objective-C or Java. React, on the other hand, can be used to develop web apps, hybrid and mobile & desktop applications.
• React Native, in essence, takes the same conceptual UI cornerstones as standard iOS and Android apps and assembles them using React.js syntax to create a rich mobile experience.

What is the Average React Developer Salary?

In the United States, the average React developer salary is $94,205 a year, or $30-$48 per hour, This is one of the highest among JavaScript developers. The starting salary for junior React.js developers is $60,510 per year, rising to $112,480 for senior roles.

* React.js Developer Salary by Country

• United States- $120,000
• Canada - $110,000
• United Kingdom - $71,820
• The Netherlands $49,095
• Spain - $35,423.00
• France - $44,284
• Ukraine - $28,990
• India - $9,843
• Sweden - $55,173
• Singapore - $43,801

In context of software developer wage rates, the United States continues to lead. In high-tech cities like San Francisco and New York, average React developer salaries will hit $98K and $114per year, overall.

However, the need for React.js and React Native developer is outpacing local labour markets. As a result, many businesses have difficulty locating and recruiting them locally.

It’s no surprise that for US and European companies looking for professional and budget engineers, offshore regions like India are becoming especially interesting. This area has a large number of app development companies, a good rate with quality, and a good pool of React.js front-end developers.

As per Linkedin, the country’s IT industry employs over a million React specialists. Furthermore, for the same or less money than hiring a React.js programmer locally, you may recruit someone with much expertise and a broader technical stack.

How to Hire React.js Developers?

• Conduct thorough candidate research, including portfolios and areas of expertise.
• Before you sit down with your interviewing panel, do some homework.
• Examine the final outcome and hire the ideal candidate.

Why is React.js Popular?

React is a very strong framework. React.js makes use of a powerful synchronization method known as Virtual DOM, which compares the current page architecture to the expected page architecture and updates the appropriate components as long as the user input.

React is scalable. it utilises a single language, For server-client side, and mobile platform.

React is steady.React.js is completely adaptable, which means it seldom, if ever, updates the user interface. This enables legacy projects to be updated to the most new edition of React.js without having to change the codebase or make a few small changes.

React is adaptable. It can be conveniently paired with various state administrators (e.g., Redux, Flux, Alt or Reflux) and can be used to implement a number of architectural patterns.

Is there a market for React.js programmers?
The need for React.js developers is rising at an unparalleled rate. React.js is currently used by over one million websites around the world. React is used by Fortune 400+ businesses and popular companies such as Facebook, Twitter, Glassdoor and Cloudflare.

Final thoughts:

As you’ve seen, locating and Hire React js Developer and Hire React Native developer is a difficult challenge. You will have less challenges selecting the correct fit for your projects if you identify growing offshore locations (e.g. India) and take into consideration the details above.

If you want to make this process easier, You can visit our website for more, or else to write a email, we’ll help you to finding top rated React.js and React Native developers easier and with strives to create this operation

#hire-react-js-developer #hire-react-native-developer #react #react-native #react-js #hire-react-js-programmer

Nest, Axios, React, React Native Architecture Speedrun

We see how fast we can put together React and React Native applications that talk through a shared custom hook with Axios to talk to a NestJS backend.

Speedrun code: https://github.com/jherr/mp-todos

• 00:00 Introduction
• 00:42 Project setup
• 01:53 NestJS setup
• 07:05 Building the React App
• 08:48 Building Shared Types library
• 16:39 Building the React-Native App
• 19:15 Building the Data Access Library
• 24:45 Outroduction

#axios #axios #react-native #react

React Starter Kit: Build Web Apps with React, Relay and GraphQL.

React Starter Kit — "isomorphic" web app boilerplate   

React Starter Kit is an opinionated boilerplate for web development built on top of Node.js, Express, GraphQL and React, containing modern web development tools such as Webpack, Babel and Browsersync. Helping you to stay productive following the best practices. A solid starting point for both professionals and newcomers to the industry.

See getting started guide, demo, docs, roadmap  |  Join #react-starter-kit chat room on Gitter  |  Visit our sponsors:

 

Hiring

Getting Started

• Follow the getting started guide to download and run the project (Node.js >= 8.16.2)
• Check the code recipes used in this boilerplate, or share yours

Customization

The master branch of React Starter Kit doesn't include a Flux implementation or any other advanced integrations. Nevertheless, we have some integrations available to you in feature branches that you can use either as a reference or merge into your project:

• feature/redux (PR) — isomorphic Redux by Pavel Lang (see how to integrate Redux) (based on master)
• feature/apollo (PR) — isomorphic Apollo Client by Pavel Lang (see Tracking PR #1147) (based on feature/redux)
• feature/react-intl (PR) — isomorphic Redux and React Intl by Pavel Lang (see how to integrate React Intl) (based on feature/apollo)
• feature/apollo-pure (PR) — Apollo devtools and TypeScript integration by piglovesyou (based on master)

You can see status of most reasonable merge combination as PRs labeled as TRACKING

If you think that any of these features should be on master, or vice versa, some features should removed from the master branch, please let us know. We love your feedback!

Comparison

	React Starter Kit	React Static Boilerplate	ASP.NET Core Starter Kit
App type	Isomorphic (universal)	Single-page application	Single-page application
Frontend
Language	JavaScript (ES2015+, JSX)	JavaScript (ES2015+, JSX)	JavaScript (ES2015+, JSX)
Libraries	React, History, Universal Router	React, History, Redux	React, History, Redux
Routes	Imperative (functional)	Declarative	Declarative, cross-stack
Backend
Language	JavaScript (ES2015+, JSX)	n/a	C#, F#
Libraries	Node.js, Express, Sequelize, GraphQL	n/a	ASP.NET Core, EF Core, ASP.NET Identity
SSR	Yes	n/a	n/a
Data API	GraphQL	n/a	Web API

Backers

♥ React Starter Kit? Help us keep it alive by donating funds to cover project expenses via OpenCollective or Bountysource!

 

How to Contribute

Anyone and everyone is welcome to contribute to this project. The best way to start is by checking our open issues, submit a new issue or feature request, participate in discussions, upvote or downvote the issues you like or dislike, send pull requests.

Learn More

• Getting Started with React.js
• Getting Started with GraphQL and Relay
• React.js Questions on StackOverflow
• React.js Discussion Board
• Flux Architecture for Building User Interfaces
• Enzyme — JavaScript Testing utilities for React
• Flow — A static type checker for JavaScript
• The Future of React
• Learn ES6, ES6 Features

Related Projects

• GraphQL Starter Kit — Boilerplate for building data APIs with Node.js, JavaScript (via Babel) and GraphQL
• Membership Database — SQL schema boilerplate for user accounts, profiles, roles, and auth claims
• Babel Starter Kit — Boilerplate for authoring JavaScript/React.js libraries

Support

• #react-starter-kit on Stack Overflow — Questions and answers
• #react-starter-kit on Gitter — Watch announcements, share ideas and feedback
• GitHub issues, or Scrum board — File issues, send feature requests
• appear.in/react — Open hours! Exchange ideas and experiences (React, GraphQL, startups and pet projects)
• @koistya on Codementor, or Skype — Private consulting

License

Copyright © 2014-present Kriasoft, LLC. This source code is licensed under the MIT license found in the LICENSE.txt file. The documentation to the project is licensed under the CC BY-SA 4.0 license.

---

Author: kriasoft
Source Code: https://github.com/kriasoft/react-starter-kit
License: MIT License

#graphql #react 

Part 1 : How To Use Axios With React | Complete Guide Part 1

How To Use Axios With React | CRUD Operations | GET POST | PUT DELETE | Complete Guide Part 1

00:16 What is Axios ?

01:00 Install Axios

01:45 Make a Get Request using Axios

04:37 Make a Post Request using Axios

08:13 Make a Delete Request using Axios

09:57 Make a Put Request using Axios

#react #reactjs #axios #crud #javascript

#react #javascript #axios #beginners #webdev 

https://youtu.be/jAfyWs_r-wk