One. Function

Environment variables: set different variables for different environments

2. Development environment

development

Process:

1. Create a file in the root directory.env.development

2. Set the variables of the corresponding environment in the file

Interface base address; VUE_APP_begins

VUE_APP_URL='Development environment interface base address'

Three. Production environment

production

1. Create a file in the root directory. env.production

2. Set the variables of the corresponding environment in the file

Interface base address; VUE_APP_begins

VUE_APP_URL='production environment interface base address'

Four. Use

process.env.VUE_APP_URL can get the defined value

npm run server development: process.env.VUE_APP_URL===aaa

npm run build production:process.env.VUE_APP_URL===bbb

V. Practical application

In the development environment:

Let's see if we can identify:

Identified.

This allows us to determine a base address in both production and development environments.