React.js Efficient Server Rendering – Hacker Noon

#ReactJS #Javascript RT @ReactAmsterdam: Make #ReactJS Server Rendering Efficient:

  • React.js Efficient Server RenderingFor about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more simplicity to frontend.But in some cases we need SEO with dynamic JSX content or we need more performance in load time for a frontend pages.
  • And for that cases Facebook developers made React.js in that way so it can be rendered on Server Side too, using Node.js basic functionality.So the flow is almost similar to this oneClient sending request to get some JSX template pageNode.js server getting main file containing JSX codeRendering it to plain HTML codeSending HTML response to clientUsing HTML markup, then client loading also React.js client side code for adding dynamic logic to rendered HTMLThis is helping to display HTML content faster than React will render it, and it is helping to give some content to Search Engine bots or website crawlers.But What If You Don’t Have Node.JS backend?This is the real questing that was standing for me when I’ve started working on large Python Django project.
  • I decided to do React.js as a frontend, but they hat a lot of Python stuff on a backend, I couldn’t rewrite all code just for server side rendering.
  • I think we really don’t need!And I got an idea to build standalone Node.js Server only for React.js JSX template rendering and nothing else, so I can make a proxy request to that server and it will render JSX content for me and will response pure HTML back to Python Django Template.
  • What is that?So using basic principle of proxy requests I just made very simple code for Pythonimport requestsimport jsonPROXY_RENDER_ADDRESS = ‘http://localhost:3000/’def get_html(filename, props): try: props_str = json.dumps(props) r = + filename , data=props_str , headers={‘Content-Type’: ‘application/json’}) if r.status_code == 200: return r.text, props_str except Exception as e: print(e) return False, FalseWhich is basically making POST Request to proxy rendering service and by passing global state as a JSON, getting back the HTML code rendered by Node.js server.So the main advantages that I gotNo need to integrate Node.js in backend side, or use crappy JS engines in Python, which are eating a lot of memoryAbility to keep JSX template cache, which give huge load time improvementsScale backend services without scaling base rendering service, so you can have multiple servers with single cached rendering service and get better performanceHuge flexibility in writing code.

For about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more…
Continue reading “React.js Efficient Server Rendering – Hacker Noon”

React.js Efficient Server Rendering – Hacker Noon

“React.JS Efficient Server Rendering” by @tigranbs  #NodeJS #reactjs #javascript #python

  • React.js Efficient Server RenderingFor about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more simplicity to frontend.But in some cases we need SEO with dynamic JSX content or we need more performance in load time for a frontend pages.
  • And for that cases Facebook developers made React.js in that way so it can be rendered on Server Side too, using Node.js basic functionality.So the flow is almost similar to this oneClient sending request to get some JSX template pageNode.js server getting main file containing JSX codeRendering it to plain HTML codeSending HTML response to clientUsing HTML markup, then client loading also React.js client side code for adding dynamic logic to rendered HTMLThis is helping to display HTML content faster than React will render it, and it is helping to give some content to Search Engine bots or website crawlers.But What If You Don’t Have Node.JS backend?This is the real questing that was standing for me when I’ve started working on large Python Django project.
  • I decided to do React.js as a frontend, but they hat a lot of Python stuff on a backend, I couldn’t rewrite all code just for server side rendering.
  • I think we really don’t need!And I got an idea to build standalone Node.js Server only for React.js JSX template rendering and nothing else, so I can make a proxy request to that server and it will render JSX content for me and will response pure HTML back to Python Django Template.
  • What is that?So using basic principle of proxy requests I just made very simple code for Pythonimport requestsimport jsonPROXY_RENDER_ADDRESS = ‘http://localhost:3000/’def get_html(filename, props): try: props_str = json.dumps(props) r = + filename , data=props_str , headers={‘Content-Type’: ‘application/json’}) if r.status_code == 200: return r.text, props_str except Exception as e: print(e) return False, FalseWhich is basically making POST Request to proxy rendering service and by passing global state as a JSON, getting back the HTML code rendered by Node.js server.So the main advantages that I gotNo need to integrate Node.js in backend side, or use crappy JS engines in Python, which are eating a lot of memoryAbility to keep JSX template cache, which give huge load time improvementsScale backend services without scaling base rendering service, so you can have multiple servers with single cached rendering service and get better performanceHuge flexibility in writing code.

For about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more…
Continue reading “React.js Efficient Server Rendering – Hacker Noon”

React.js Efficient Server Rendering – Hacker Noon

  • React.js Efficient Server RenderingFor about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more simplicity to frontend.But in some cases we need SEO with dynamic JSX content or we need more performance in load time for a frontend pages.
  • And for that cases Facebook developers made React.js in that way so it can be rendered on Server Side too, using Node.js basic functionality.So the flow is almost similar to this oneClient sending request to get some JSX template pageNode.js server getting main file containing JSX codeRendering it to plain HTML codeSending HTML response to clientUsing HTML markup, then client loading also React.js client side code for adding dynamic logic to rendered HTMLThis is helping to display HTML content faster than React will render it, and it is helping to give some content to Search Engine bots or website crawlers.But What If You Don’t Have Node.JS backend?This is the real questing that was standing for me when I’ve started working on large Python Django project.
  • I decided to do React.js as a frontend, but they hat a lot of Python stuff on a backend, I couldn’t rewrite all code just for server side rendering.
  • I think we really don’t need!And I got an idea to build standalone Node.js Server only for React.js JSX template rendering and nothing else, so I can make a proxy request to that server and it will render JSX content for me and will response pure HTML back to Python Django Template.
  • What is that?So using basic principle of proxy requests I just made very simple code for Pythonimport requestsimport jsonPROXY_RENDER_ADDRESS = ‘http://localhost:3000/’def get_html(filename, props): try: props_str = json.dumps(props) r = + filename , data=props_str , headers={‘Content-Type’: ‘application/json’}) if r.status_code == 200: return r.text, props_str except Exception as e: print(e) return False, FalseWhich is basically making POST Request to proxy rendering service and by passing global state as a JSON, getting back the HTML code rendered by Node.js server.So the main advantages that I gotNo need to integrate Node.js in backend side, or use crappy JS engines in Python, which are eating a lot of memoryAbility to keep JSX template cache, which give huge load time improvementsScale backend services without scaling base rendering service, so you can have multiple servers with single cached rendering service and get better performanceHuge flexibility in writing code.

For about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more…
Continue reading “React.js Efficient Server Rendering – Hacker Noon”

React.js Efficient Server Rendering – Hacker Noon

  • React.js Efficient Server RenderingFor about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more simplicity to frontend.But in some cases we need SEO with dynamic JSX content or we need more performance in load time for a frontend pages.
  • And for that cases Facebook developers made React.js in that way so it can be rendered on Server Side too, using Node.js basic functionality.So the flow is almost similar to this oneClient sending request to get some JSX template pageNode.js server getting main file containing JSX codeRendering it to plain HTML codeSending HTML response to clientUsing HTML markup, then client loading also React.js client side code for adding dynamic logic to rendered HTMLThis is helping to display HTML content faster than React will render it, and it is helping to give some content to Search Engine bots or website crawlers.But What If You Don’t Have Node.JS backend?This is the real questing that was standing for me when I’ve started working on large Python Django project.
  • I decided to do React.js as a frontend, but they hat a lot of Python stuff on a backend, I couldn’t rewrite all code just for server side rendering.
  • I think we really don’t need!And I got an idea to build standalone Node.js Server only for React.js JSX template rendering and nothing else, so I can make a proxy request to that server and it will render JSX content for me and will response pure HTML back to Python Django Template.
  • What is that?So using basic principle of proxy requests I just made very simple code for Pythonimport requestsimport jsonPROXY_RENDER_ADDRESS = ‘http://localhost:3000/’def get_html(filename, props): try: props_str = json.dumps(props) r = + filename , data=props_str , headers={‘Content-Type’: ‘application/json’}) if r.status_code == 200: return r.text, props_str except Exception as e: print(e) return False, FalseWhich is basically making POST Request to proxy rendering service and by passing global state as a JSON, getting back the HTML code rendered by Node.js server.So the main advantages that I gotNo need to integrate Node.js in backend side, or use crappy JS engines in Python, which are eating a lot of memoryAbility to keep JSX template cache, which give huge load time improvementsScale backend services without scaling base rendering service, so you can have multiple servers with single cached rendering service and get better performanceHuge flexibility in writing code.

For about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more…
Continue reading “React.js Efficient Server Rendering – Hacker Noon”

My Experience With Progressive Web Apps – Renganatha Arunachalam – Medium

My Experience With Progressive Web Apps  #webpack #progressivewebapp #react #reactjs

  • They are the future.I built a Progress Web App of WhatsApp Web using Webpack 2.0, React and Express.Note: This is not a complete clone of WhatsApp Web but minimal one to have an understanding of how to create a PWA app.Case StudyMain aim of PWA apps should be making the load time of webapp faster.Server Side RendingServer Side Rendering (App shell architecture) is a way of making the load time faster without JavaScript .
  • Sample Code of match api from react-routerBundlingVarious ways are available to bundle the app with minimum size using Webpack.I say separating the vendor libraries and components is the best way to reduce the bundling size.
  • The remaining two bundles are precisely due to code splitting.react-router can be used for Route based splitting out of box with WebpackWorkers From WebWeb workers and Service workers are most useful feature from web.
  • Both the workers have no access to DOM.Web Workers are use to do heavy operation in separate thread of browser and return result to the web app.Service workers are useful for caching the request.
  • All three attributes are used for loading the scripting without blocking onLoad function.Use Web manifest.json to have Native feel when users does Add to Home Screen in Mobile.Use LightHouse Chrome extension to validate your websiteUseful ArticlesProgressive web app with with React.js — Four LiteUber ClonePrefer defer over AsyncGetting most out of CommonChunksPluginVendor and Code Splitting in WebpackUseful webpack pluginsThe Offline CookbookHttp Browser Caching

Progressive Web Apps is a paradigm to make webapp more efficient on mobile devices. They are the future. Note: This is not a complete clone of WhatsApp Web but minimal one to have an understanding of…
Continue reading “My Experience With Progressive Web Apps – Renganatha Arunachalam – Medium”

Improve Your UX by Dynamically Rendering Images via React

Improve Your UX by Dynamically Rendering Images via React @arwong09  #Reactjs #UX #Startups

  • It’s also how performant it is, how intuitive it is — how much it delights your user.We’ve all been there, discovering a new app or web page for the first time and seeing something like this:With high resolution photos and retina screens, it’s all too often we have to sit and watch images painstakingly render.
  • We accomplish this by using React’s onLoad event; we can make the request to the server for the image files, but not render the image in the DOM until the entire file has been downloaded.the end result: smooth as butterThe end result is an app that loads high resolution images and never keeps the user waiting.
  • The placeholder teases the user and lets them know images are being loaded.
  • Furthermore, we hold off on rendering the images until they have been fully downloaded from the server so our user never has to see images painting from top to bottom in the browser.view live demoShow Me the Code!Rendering the PlaceholderFor our placeholder component (LoadingItem in this example), we simply render the image and apply any animation effects we want:export default function () { return ( ReactCSSTransitionGroup transitionName=”loadingItem” transitionAppear={true} transitionAppearTimeout={500} transitionEnterTimeout={500} transitionLeaveTimeout={300} img className=”feed__loading-item” src={img} / /ReactCSSTransitionGroup )}In the render of our Feed component, we simply render LoadingItem as long as we still have FeedItems being loaded:export default class Feed extends Component { … render() { return ( div className=”feed” … {this.props.items.length this.state.loadedItems.length LoadingItem / } … /div ) }}Dynamically Rendering Images via `onLoad`Our Feed component works as follows:export default class Feed extends Component { constructor(props) { super(props) this.state = { loadedItems: [] } } onLoad(feedItem) { let updatedItems = this.state.loadedItems updatedItems.push({ name: feedItem.name, imgPath: feedItem.imgPath }) this.setState({ loadedItems: updatedItems }) }render() { return ( div className=”feed” h1 i) = FeedItem imgPath={item.imgPath} name={item.name} key={i} / )} {this.props.items.length this.state.loadedItems.length LoadingItem / } div className=”hidden” {this.props.items.map((item, i) = img src={item.imgPath} onLoad={this.onLoad.bind(this, item)} key={i} / )} /div /div ) }}So what’s happening here?
  • When the state updates, the newly loaded item is rendered into the DOM with the image already fully downloaded.That’s it!View live demoView full source code (star the repo if you found this helpful!)

It’s a competitive world out there right now. As we all know, just having a good idea isn’t enough to make your company the next billion dollar IPO. Execution is just as important, and when it comes…
Continue reading “Improve Your UX by Dynamically Rendering Images via React”

React.js Efficient Server Rendering – Hacker Noon

React.js Efficient Server Rendering @tigranbs  #Reactjs #JavaScript #Nodejs

  • React.js Efficient Server RenderingFor about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more simplicity to frontend.But in some cases we need SEO with dynamic JSX content or we need more performance in load time for a frontend pages.
  • And for that cases Facebook developers made React.js in that way so it can be rendered on Server Side too, using Node.js basic functionality.So the flow is almost similar to this oneClient sending request to get some JSX template pageNode.js server getting main file containing JSX codeRendering it to plain HTML codeSending HTML response to clientUsing HTML markup, then client loading also React.js client side code for adding dynamic logic to rendered HTMLThis is helping to display HTML content faster than React will render it, and it is helping to give some content to Search Engine bots or website crawlers.But What If You Don’t Have Node.JS backend?This is the real questing that was standing for me when I’ve started working on large Python Django project.
  • I decided to do React.js as a frontend, but they hat a lot of Python stuff on a backend, I couldn’t rewrite all code just for server side rendering.
  • I think we really don’t need!And I got an idea to build standalone Node.js Server only for React.js JSX template rendering and nothing else, so I can make a proxy request to that server and it will render JSX content for me and will response pure HTML back to Python Django Template.
  • What is that?So using basic principle of proxy requests I just made very simple code for Pythonimport requestsimport jsonPROXY_RENDER_ADDRESS = ‘http://localhost:3000/’def get_html(filename, props): try: props_str = json.dumps(props) r = + filename , data=props_str , headers={‘Content-Type’: ‘application/json’}) if r.status_code == 200: return r.text, props_str except Exception as e: print(e) return False, FalseWhich is basically making POST Request to proxy rendering service and by passing global state as a JSON, getting back the HTML code rendered by Node.js server.So the main advantages that I gotNo need to integrate Node.js in backend side, or use crappy JS engines in Python, which are eating a lot of memoryAbility to keep JSX template cache, which give huge load time improvementsScale backend services without scaling base rendering service, so you can have multiple servers with single cached rendering service and get better performanceHuge flexibility in writing code.

For about a year now I’m developing Web Applications based on React.js, and it was amazing for me to write code that actually scales with JSX components, rather than functions, it’s giving more…
Continue reading “React.js Efficient Server Rendering – Hacker Noon”