Checking localhost (React Native)-CodePudding

I'm trying to determine if an application is currently running on localhost. On the web, I can use window.location to define localhost in the url string. I am using Androud Studio to emulate android devices expo. How do I tell if I'm in development mode in React Native?

CodePudding user response：

You can use the global variable __DEV__

The definition from the documentation is:

This variable is set to true when react-native is running in Dev mode

Example:

const myEnv = __DEV__ ? 'DEV' : 'PROD';

.....
<Text>{myEnv}</Text>