.环境变量在 Vue.js 中不起作用

Question

I have.env file in the root of my project in Vue3. In the components folder, I have Card.vue and this code

console.log(process.env.FOO)

But in browser, it shows undefined.

Answer 1

Variables must start with VUE_APP , hence

`VUE_APP_FOO`

Answer 2

Having a similar problem here. I'm usnig VUE_APP_FOO to set the variable in .env but it's still undefined when console.log(process.env.VUE_APP_FOO) . Using Vue2 (Vue cli 4.5.11)