[node.js] Using Environment Variables with Vue.js

In the root of your project create your environment files:

  • .env
  • .env.someEnvironment1
  • .env.SomeEnvironment2

To then load those configs, you would specify the environment via mode i.e.

npm run serve --mode development //default mode
npm run serve --mode someEnvironment1

In your env files you simply declare the config as key-value pairs, but if you're using vue 3, you must prefix with VUE_APP_:

In your .env:

VUE_APP_TITLE=This will get overwritten if more specific available

.env.someEnvironment1:

VUE_APP_TITLE=My App (someEnvironment1)

You can then use this in any of your components via:

myComponent.vue:

<template>
  <div> 
    {{title}}
  </div>
</template>

<script>
export default {
  name: "MyComponent",
  data() {
    return {
      title: process.env.VUE_APP_TITLE
    };
  }
};
</script>

Now if you ran the app without a mode it will show the 'This will get...' but if you specify a someEnvironment1 as your mode then you will get the title from there.

You can create configs that are 'hidden' from git by appending .local to your file: .env.someEnvironment1.local - very useful for when you have secrets.

Read the docs for more info.

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