CSS Modules with React: The Complete Guide – YoungInnovations’ Blog

CSS Modules with #ReactJS: The Complete Guide

  • css$/, use: [ { loader: ‘style-loader’, }, { loader: ‘css-loader’, options: { sourceMap: true, modules: true, localIdentName: ‘[local]___[hash:base64:5]’ } } ],}]CSS module makes CSS classes local for every component declared within by adding hashes in class names which are unique to each component, thus preventing CSS classes from one component overriding or conflicting with CSS in other components.Here is a simple example:panel.jsimport React from “react”;import style from “.
  • panelBody { padding: 15px;}Here classes panel and panelDefault are specific to Panel component and global class container comes from bootstrap applicable to whole site.An interesting thing to notice while writing multiple classes is that, if were to define class in html structure and do not define that class in CSS file, the genereated HTML will literally have undefined class.
  • panelBody { padding: 15px;}The generated HTML will be:div class=”undefined panelDefault___3JNN6″ div class=”panelBody___3OqQA”A Basic Panel/div/divSharing variables between CSS and JSOne of the things that excites me about CSS modules is ability to export variables from CSS file for use in JS file.
  • And there is a little extra step to get this working.With CSS modules, any CSS file a component is importing is local to the component as we are instructing webpack to map our CSS class names to unique hash based identifiers.A simple approach can be: define all locally scoped CSS along with each component js file and define global CSS in a separate direactory.All the CSS files inside app directory are locally scoped.locally coped css filesAnd CSS files inside styles directory can be global to whole site.To get this approach working, we have to add a simple configuration in our webpack config file.rules: [{ test: /\.
  • :)CSS module does not affect element and attribute selectorsWith CSS modules, class names are locally scoped to component in which it is defined, however, html element and attribute selectors are untouched.panel.jsdiv class=”panelDefault” div class=”panelBody” a color: salmon;}a{ text-decoration: none;}Here, above styles are global and applied across entire project.

In the developer community today, we are seeing new design patterns, libraries and frameworks trying to make front end systems even better. Web components are becoming de-facto in developing front…
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React Ecosystem Setup — Step-By-Step Walkthrough – codeburst

#ReactJS Ecosystem Setup — Step-By-Step Walkthrough:

  • DOCTYPE htmlhtml lang=”en”head meta charset=”UTF-8″ meta name=”viewport” content=”width=device-width, initial-scale=1.0″ meta http-equiv=”X-UA-Compatible” content=”ie=edge” titleReact – Basic Setup/title/headbody div Express ServerRun npm install express.
  • It’ll recursively go through every dependency and the dependencies’ dependencies, resolving all the way down.It’ll transpile our farm-fresh, cutting-edge ES6+ down to ES5 so that it’ll work on virtually every browser.It’ll minify our code by removing whitespace and shortening variable names, reducing the final file size.In the end, we’ll be able to write modular, modern Javascript and CSS that we can work with easily and use best practices on.Getting StartedLet’s create a folder named src in our root directory.
  • DOCTYPE htmlhtml lang=”en”head meta charset=”UTF-8″ meta name=”viewport” content=”width=device-width, initial-scale=1.0″ meta http-equiv=”X-UA-Compatible” content=”ie=edge” titleReact – Basic Setup/title/headbody div you open up dist/app.
  • To make webpack minify your code, use the production flag, -p. Type in webpack -p and look at the bundle file.
  • js$/, exclude: [/node_modules/], use: { loader: ‘babel-loader’, options: { presets: [‘env’] } } } ] }};This code is telling webpack to test the files in our directory and look for the filenames matching the r

React is arguably the hottest framework currently used by the web development community at this point. Unfortunately, for newcomers and even more seasoned developers, setting up the industry-standard…
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Building a static website from scratch? Go @gatsbyjs. Most impressive framework I’ve seen. Powered by @reactjs.

  • You get code and data splitting out-of-the-box.
  • Gatsby loads an HTML file that’s a server rendered version of your React.js page then makes it live with JavaScript.
  • Code and data for other pages get preloaded so clicking around the site feels incredibly fast.

Enjoy all the power of the latest web technologies. React.js, webpack, modern JavaScript and CSS and more are all setup and waiting for you to install and start building.
Continue reading “Building a static website from scratch? Go @gatsbyjs. Most impressive framework I’ve seen. Powered by @reactjs.”

React Ecosystem Setup — Step-By-Step Walkthrough

  • An issue with using a bundle instead of our source code is that it makes debugging more difficult, because the stack trace now refers to our bundle file.
  • Using the flag during development means webpack will watch our files and re-generate the bundle every time we save a change.
  • This code is telling webpack to test the files in our directory and look for the filenames matching the regex in the property.
  • Now we can use ES6 code and the bundle generated by webpack will contain only ES5 code.
  • We’ll have to add a term to our file to tell it that we’re writing React code.

Understand what React, Webpack, and Babel are doing and how to configure them yourself.
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No KISS for CSS-in-JS – Ivn Cote – Medium

No KISS for CSS-in-JS  #javascript #frontenddevelopment #css #react #reactjs

  • On top of that, CIJ tangles and confuses the many aspects of frontend development, thus contradicting the KISS principle and the UNIX design principle of making single purpose tools (programs).
  • Even more: despite the fact that CIJ is only a subset/superset of CSS, CIJ advocates like Mark Dalgleish tell us that the approach will solve problems across platforms, not only in web.
  • CIJ combines this concept with inline style paradigm of putting all the CSS rules along with their logic right into javascript file.
  • When Glen tells us that the critical CSS issue is magically solved by CIJ, I start thinking that this specific problem is only a small piece of the huge puzzle called web performance.
  • Of course, CIJ could be a substitution for CSS on non-web platforms, but it underlines mainly the problem of these specific systems.

Disclaimer: This article is very opinionated. Please use whatever you want. I highly advise you to employ different techniques for different applications, so you can compare them on real use cases…
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React Routing with this.props.children

Routing with #ReactJS using

  • You can apply CSS to your Pen from any stylesheet on the web.
  • Just put a URL to it here and we’ll apply it, in the order you have them, before the CSS in the Pen itself.
  • If the stylesheet you link to has the file extension of a preprocessor, we’ll attempt to process it before applying.
  • You can also link to another Pen here, and we’ll pull the CSS from that Pen and include it.
  • If it’s using a matching preprocessor, we’ll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

An example of using React Router (2.8.1) and this.props.children to create page navigation….
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We’re looking for awesome React.js Developers. Apply now:

We're looking for awesome React.js Developers.
Apply now:

  • Job Description :

    We are looking for a great JavaScript developer who is proficient with Reactjs Html and CSS .

  • Your primary focus will be on developing user interface components and implementing them following well-known React.js workflows (such as Flux or Redux).
  • Therefore, a commitment to collaborative problem solving, sophisticated design, and quality product is important.
  • Responsibilities :

    – Developing new user-facing features using React.js

    – Building reusable components and front-end libraries for future use

    – Should have at least 1.5 years of experience in react.js

    – Translating designs and wireframes into high quality code

    – Optimizing components for maximum performance across a vast array of web-capable devices and browsers

    Skills :

    – Strong proficiency in JavaScript, including DOM manipulation and the JavaScript object model

    – Thorough understanding of React.js and its core principles

    – Experience with popular React.js workflows (such as Flux or Redux)

    – Familiarity with newer specifications of EcmaScript

    – Familiarity with RESTful APIs

    – Familiarity with modern front-end build pipelines and tools

    – Experience with common front-end development tools such as Babel, Webpack, NPM, etc.

  • – Ability to understand business requirements and translate them into technical requirements

    – A knack for benchmarking and optimization

    – Solid understanding of Html and css and its framework such as Bootstrap

    – Familiarity with code versioning tools such as in Git

React.js Developer – Javascript (2-3 yrs), Delhi/NCR/Noida, React.js,Javascript,Bootstrap,RESTful,API, tech it jobs – hirist.com
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Apply now:”