Create React App: using environment variables in index.html
Is there a way to inject environment variables, e.g. REACT_APP_MY_API
into the index.html
file?
According to this, it can be done, but I can't seem to get it to work.
.env
REACT_APP_MY_API=https://something.com
index.html
<script type="text/javascript">
console.log("%REACT_APP_MY_API%") // undefined
console.log("%NODE_ENV%") // development
</script>
Solution 1:
I just tried with an (almost) new CRA setup and it works.
<head>
<title>React App</title>
<script type="text/javascript">
console.log("%REACT_APP_TEST%") // OK
console.log("%NODE_ENV%") // development
</script>
</head>
Did you try restarting the server? I just tried changing the test variable with your example and it works if you restart the development server.
As someone pointed out in the comments, the official documentation of CRA has a section about that.
Solution 2:
Make sure you restart your create-react-app when adding variables into the .env file
Also make sure you have >= [email protected]
I use .env variables for the meta title of a site with various language versions of the build:
<title>%REACT_APP_SITE_TITLE%</title>