I want to run react from the HTML page so that it is displayed on the browser. Till now I was using node to run it but now I want that when I open my HTML file in the browser my react app should run there.
A production build might be what you need. Try executing npm run build (or yarn build, if you're using Yarn).
This creates a production build of your app in the build folder, which contains index.html along with other static files. Running index.html should run the app in your browser.
A production build is meant to be served to the end user, so remember that you won't be getting any nice crash messages or stack traces that you get from running it on Node. Neither would development-related niceties like hot-reloading work. If you're still working on your project actively, keep using Node.
By the way, if you just need to make any changes to the HTML file of your React app (like changing the title or adding an external script), you can do that in public/index.html too - you don't need to create a production build for that.
Related
Typescript just relase 3.7.3 with optional chaining, so I wanted to upgrade a project for this feature.
However, after runing yarn upgrade --latest, and doing yarn start, the app will reload infinitely.
After couple days of debugging. This is what I find out, it seems like if anything changed recently on /public folder, then the app will be Navigated to http://localhost:3000/ which will cause it to reload infinitely due to the design of my app.
The project was working for previous dependencies, so I am not sure whethere it's a react or electron upgrade that they changed it such that the app will watch for /public folder. When public folder changed, and causing the app to navigate to localhost:3000. Anyone know what's the cause of this phenomena? And the reason behind this change, and also how to pass around this?
By the way, my app was a simple epub reader application. Currently, my app will load all the images, css files and stored them to public folder (delete those files on unmount). Thus the app can load these images, stylesheets. (I just tried to store these files just inside the src folder, and it seems react won't be able to load these resources dynamically).
create-react-app seems to start localhost server at npm start.
(npx comes with npm 5.2+ and higher, see instructions for older npm versions)
Then open http://localhost:3000/ to see your app.
When you’re ready to deploy to production, create a minified bundle with npm run build.
https://facebook.github.io/create-react-app/docs/getting-started
Why do I need to bring up a server just to run JavaScript?
What are the differences, advantages, and disadvantages of opening the build result file directly in the browser?
Also, is this true for other frameworks regardless of create-react-app?
I read React's repository etc on this issue, but there was no topic on this issue.
One of the main advantages to create-react-app starting a localhost server is hot reloading.
When you write most modern JavaScript, including React, your code needs to be transpiled (essentially converted to a different version of JS) before the browser can understand it. This is called the build process, which takes all the files in the src directory and bundles them into a single static JS file.
You could do this manually with npm run build, which creates an index.html that you can open in a browser without running a server. But you have to go through 2 part process to see your changes: rebuild and then reload the browser to see your changes.
create-react-app is built so that it watches for changes in your files, updates the built JS whenever you hit save, and then restarts the server, loading your changes automatically.
By running a server on localhost, create-react-app can update your page instantly every time you save, without you manually rebuilding OR refreshing the page. Hot reloading!
I built an app in React with create-react-app. Just JavaScript, CSS, HTML & React. I ran npm build then deployed the app to Netlify.
I want to go back and edit some CSS. So, I cd into the directory from my laptop and deploy on localhost:5000. I open VS Code and make changes however none of the changes are reflected in the browser # localhost:5000.
When I was building the app, the way I had it set up allowed me to view each change immediately in the browser when I save the file.
Are files editable after you run npm build? What am I missing here?
When you run a build on a react app (or any other app) code will be converted from es6 to es5 and then probably minified (depends on webpack config) so code is unreachable and you need .map files to debug code in production environment.
So the most clean way to act on deployed code is to make a new build with updated features and deploy again the frontend.
In local development react boilerplates usually make intensive use of hot-reload, a plugin that allow code to be hot replaced while app is running.
Built application instead load chunks of JS files once and CACHE it. So in order to see your changes you have to clean cache or force a refresh (home+F5 on windows, CMD+R on OSX) to be sure that your changes are visible.
Despite this I discourage to edit the build files. When you have to update the code stay on development mode, before deploy, build your code and test it live.
You could create some files outside the src folder and access them with fecth from app.js or even import them from index.html ... so if you wanted to change something you could do it without having to do a build again.
I have a React app (via create-react-app).
I handle file uploads and place them in /public/images/uploads and then access via URL like http://myapp.com/images/uploads/blah.png. This works fine in development.
When I npm build and use serve, I cannot access dynamically created images via the URL. If I rebuild, I can then access them.
I'm obviously missing something here. Thanks
UPDATE: I did an eject on this app.
Noticed the contents my public/images directory are copied at build time to build/images and all requests to http://app.com/images/test.png and served from build/images.
Is there a way to let webpack, which I assume is responsible for this Should I just create my images in build as well? Seems odd.
I am about to develop a web application. I will use this theme- http://startangular.com/product/flatlogic-angular-material-dashboard/ for admin panel. I already installed it on my local machine following the instructions. But this is my first time of installing a html theme like this using command lines (npm, gem and gulp).
I also noticed that all the AngularJS admin panel theme are has to be installed in that way. I mean using npm and other commands. Installation is fine. When I run this command
gulp serve
It opens the browser and show the admin panel. But the problem is I do not understand the project structure.
Admin panel is working when I serve gulp. But what I want is I just want to access without serving gulp. I mean I want to move it to xampp. Then integrate with a framework(PHP). So for now when I access directly, it is not working. What I want is I just want to have simple project, something like this
/project
========
/css
/js
/view
How can I build them into it? I mean using command lines. For now I have to serve gulp to access my project. To convert it manually, I checked the index.html and there are a lot of syntax commented I am not familiar with.
eg
<!-- build:css({.tmp/serve,src}) styles/vendor.css -->
<!-- bower:css -->
How can I convert the Angular theme into simple project to send to server for deployment? Can it be done from command lines?
Now my project is under
c:/xampp/htdocs/material_dashboard/angular-material-dashboard
When I access this
http://localhost/material_dashboard/angular-material-dashboard/src/
It shows nothing. Just white screen. No error in browser console as well.
When I access this
http://localhost/material_dashboard/angular-material-dashboard/.tmp/serve/
It is showing these errors.
All status code 404 returns.
How can I access the project without serving Gulp? From which url can I access?
Development server
Angular applications are mix of JavaScript, HTML, CSS and every paths is relative to the root of application - index.html.
In this case copy contents of dist folder. Copy whole dist folder and deploy it.
Development server just tries to simulate real one production server. If it is working on development - that one that is executed over gulp server it should also works on production environment.
Production environment
It is time to go straight with application. There are only two major steps
build it with gulp build (of course if you are using gulp and there is task like that)
copy content of the builded directory to production environment (that steps is also called deployment)
CORS issue?
AngularJS application and the backend should be executed (should run) on the same protocol, domain and port address to avoid CORS policy rules.