Topcoder Getting Started with ReactJS

Getting Started with ReactJS - A blog that is supplemented by a Fun Challenge!

  • ReactJS uses JSX to transpire the HTML element on the web page.
  • React first converts JSX into a JavaScript file that is rendered by the browser, resulting in HTML code.
  • BABEL converts JSX code in JavaScript and takes care of cross-browser compatibility.
  • ReactJS functions are called components.
  • ReactJS gives us power to pass data between components and we do it using props and states.

Have you ever thought of passing your HTML code into JavaScript code? How about displaying HTML elements via JavaScript?
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Using JSX with Vue.js – Anthony Gore – Medium

Using JSX with Vue.js  #webdevelopment #javascript #react #vuejs #vue #reactjs

  • Using JSX with Vue.jsLove it or hate it, JSX is a popular extension to JavaScript that allows XML tokens in your scripts.If you want to create templates in your script files and you find Vue’s render() function to be difficult to work with, JSX may be just what you need.To demonstrate, here’s a render function without JSX:And with JSX:If nothing else, it’s much easier to read!Of course, JSX cannot be interpreted by the browser.
  • More on this later.Note: this article was originally posted here on the Vue.js Developers blog on 2017/02/27Why use JSX with Vue?There are many ways to specify a template in Vue:Using an HTML fileUsing a template property in your instance/component constructorUsing template tags in single file componentsUsing a render function.If you go with option 4, you have to create your nodes in a very unfamiliar way i.e. using the createElement JavaScript syntax.JSX allows you use a render function and still have the look and feel of HTML.
  • When you click the span it will trigger an alert.Firstly, let’s use Vue in the normal way with separate JS and HTML files:Incorporating a render functionThe following code does exactly the same thing as the above code, the only difference is that rather than using a template we will use a render function to create our template:Incorporating JSXThe render function is a little hard to read, right?
  • And that’s just for one span, imagine using it for a more complex component!Let’s use JSX now:(index.html same as above)Transpiling JSXJSX is just for development and will be transpiled away long before runtime.
  • Simply add it to your Webpack config:Now, when you do a webpack build, your JSX will be transpiled into standard JS.Get the latest Vue.js articles, tutorials and cool projects in your inbox with the Vue.js Developers Newsletter

If you want to create templates in your script files and you find Vue’s render() function to be difficult to work with, JSX may be just what you need. Of course, JSX cannot be interpreted by the…
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5 React Development Tips for Beginner – SkyshiDigital – Medium

5 React Development Tips for Beginner  #beginner #react #javascript #reactjs

  • 5 React Development Tips for BeginnerHello there, on this article i will tell you some tips about my experiences on developing web-apps with React.
  • If you wanna keep learning about programming languages, you should understand the Fundamental first.But, React is not a programming language, it’s a library on top of JavaScript.
  • It’s the V of your MVC, so if you came from JavaScript background (Vue, Angular, jQuery or anything) you won’t encounter any big hurdle.So, here’s my tips for anyone who want to learn React:1.
  • It’s simple, because if you are a self-trained programmer, you should use an IDE.
  • It will save you from some typing errors before sinking deeper into StackOverflow.For IDE selection, React are best developed with Atom + nuclide (because Facebook using it) or maybe if you have subscription of WebStorm?

Hello there, on this article i will tell you some tips about my experiences on developing web-apps with React. As a Beginner. For me, learning react is not really easy but not really hard too. FYI i…
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Didact: Element creation and JSX – Hexacta Engineering

Didact: Element creation and JSX  #opensource #react #javascript #html #programming #reactjs

  • For example, babel transpile the JSX from above to:Try it on babel REPLThe only thing we need to add to Didact to support JSX is a createElement function, and that’s all, the rest of the work is done by the preprocessor.
  • The first argument of the function is the type of the element, the second is an object with element props, and all the following arguments are children.
  • Text children are passed as strings to the createElement function, and Didact needs the text elements to have type and props as the rest of the elements.
  • So we will convert to a text element every arg that isn’t yet an element:I also filtered the list of children to exclude null, undefined and false args, we won’t render those so there is no need to add them to props.children.SummaryWe haven’t added any real power to Didact in this post, but we now have an improved developer experience since we can use JSX to define elements.
  • Note that the codepen is using babel to transpile the JSX, the comment at the beginning /** @jsx createElement */ tells babel with function to use.You can find the current version of the code on GitHub.Next post coming soon…Thanks for reading.

This story is part of a series where we build a working version of React keeping the code as simple as possible. In this post we simplify the creation of elements and add support for JSX.
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An Open Source Component Repository – Stepan Parunashvili

An Open Source Component Repository  #javascript #react #reactjs

  • An Open Source Component RepositoryMark Shlick and I are UI engineers.
  • One idea came up, that could make UI engineers more productive, and increase how much work is reused.Neither of us have bandwidth to work on it, so we wanted to share it with you.
  • JSX and the idea of having UI be a pure function of props made it simple to share and re-use components in our apps.This allowed us to reduce how complex our codebase grew.
  • Could we share components as a community?We already have great open source components, from date pickers to phone number inputs.
  • To demonstrate these components though, the authors have to go to great lengths to help you find and try them out.What if there was a visual explorer for all open source componentsUsers could discover components visuallyDevelopers could quickly demonstrate their components, from propTypes, to the different states they take up.Developers could do this by adding some sort of dotfile in their repo.Users could play with these components, a la codepenThe OpportunityIf this works out, the number of components that are open sourced would increase, the number of people who discover these components would increase, and developer productivity would increase.

Mark Shlick and I are UI engineers. We meet up every week to talk shop, and riff on ideas. One idea came up, that could make UI engineers more productive, and increase how much work is reused…
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All the Conditional Renderings in React

  • When a component has conditional rendering, the instance of the rendered component can have different looks.
  • The ternary operation makes the conditional rendering in React more concise than the if-else statement.
  • You can use a switch case operator to handle the conditional rendering of these multiple states.
  • Higher order components (HOCs) are a perfect match for conditional rendering in React.
  • They add control components to enable conditional renderings without JavaScript in JSX.

The article is an exhaustive list of conditional renderings in React. But what is conditional rendering in React? In a conditional render a component decides based on one or several conditions which elements it will return…
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Why ReactJS is becoming popular as a Javascript library!

Our new blog throws light on the hot new #javascript  library, #reactjs !

  • While the React’s brothers (Angular, Ember, Backbone) are dubbed as client-side MVC frameworks, this guy is different.
  • Angular is an entire framework while React is just a library.
  • But with React Router (for routing), Relay, GraphQL (for declaring dependencies) and React Native, it clearly outweighs Angular.
  • With React we attain the freedom to choose, which is lacking in Angular.
  • With the release of Angular 2.0, and the news that it is not backward compatible,  React swooped in and stole the hearts and minds of legions of developers with a ‘simple view library’.

Learn about the exciting world of React JS, a simple view library developed for UI designing that ushers in clean code and better modularization in web projects.
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