I'm trying to use environment variables in my react app that I created with npx create-react-app.
I created .env file(in the root directory) and placed the variable which start with REACT_APP, but still when I try to log it in the console, it shows up undefined.
I did restart development server many times, still the same.
I uploaded test project here
not sure about the reason behind this, but it did not work for me with the .env file in the attachment.
So i deleted the .env file and created new one will same content and it started working 🤔🤔🤔
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I am trying to deploy a React App with Github Pages, and I tried to simply create a .env file in my root directory of the repo. But after I wrote:
REACT_APP_GOOGLE_MAPS_API_KEY = "my_api_key"
and
REACT_APP_EMAILJS_PUBLIC_KEY = "my_public_key"
After committing this, committing online not with Git, I wanted to check the .env file but I could still be able to see the value of the variables. How do I set the .env file? Do I have to use Github Environment Variables? If "Yes", how?
I want to setup already created react app in my local for further updation. I only have files uploaded to the server public_html.
Directory view
You can view the files in my root folder here.
Is it possible to setup react project like that. If so someone please help.
This command should work if everything is set up correctly and you have all the requirements installed locally. npm start
I am a React beginner.
Develop with React, build and deploy to the server.
When deploying, use'yarn run build' to upload the resulting file to the server apache.
During development, the address of the API server was set in the .env file.
After building and deploying, I want to change the API server address in the .env file.
But there is no .env file in the built file...
It seems that the value of the .env file cannot be modified.
In this case, is there a way to change the setting value without build even after deployment?
You need to create two env files .env.development and .env.production under root path and whatever you define in .env.development will work for local and whatever you define inside .env.production will work when you create build that is it is being switched to production mode
I was wondering how I can set environment variable in React to hid my API key?
I am hosting the app on Netlify so I am not sure if that matters. I am able to successfully do it in development but when it gets to production, the api key becomes undefined.
In my .env file when I have:
REACT_APP_API_KEY="my_api_key_etc"
In my app.js I have:
const apiKey = process.env.REACT_APP_API_KEY
when I console.log(apiKey) in development (npm start): it shows my api fine, but when in production mode (npm run build): it shows undefined.
I have already tried to create two more files like .env.development and .env.production and still that didn't work.
Also I made sure my .env files are outside of my src folder.
Do you guys think it has something to do with Netlify?
Thanks in advance!
Ideally you should be setting these variables in your dashboard instead. Head to your Project settings, and add this, and any other variables under environment:
I have an app ready for production. For it to work, each client needs to set a unique url to access their data. How would i prepare the app for making it easy to add a url as an access point to the clients?
Would a correct way to do this be to add it in the manifest.json file and somehow reference it from there? (Until now in development i've only used a global URL in a js file)
You need to install the package dotenv package and create a .env file in your root directory which should contain your environment variables.
Assuming that the URl you are referring to is http://localhost:3000/some/url on your localhost, then your .env file might look like:
MY_URL=http://localhost:3000/some/url
Then in your react application, you can get the value of MY_URL by doing:
const url = process.env.MY_URL
Note that if you are using the create-react-app package, then you do not need to install the dotenv package since it already comes with the create-react-app package. Also you need to change it:
REACT_APP_MY_URL=http://localhost:3000/some/url
Also make sure to add the .env file to your .gitignore file so that you do not push it to your repo.
Assuming that you are deploying your application to Heroku. Heroku provides a simple interface which allows you to add your environment variables which looks like:
That's it.
Maybe you could store them in environment variables?
that way you can always edit them later without having to change components.