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Vue.js中怎么判断是开发环境还是发布环境?

怎么判断是开发环境还是发布环境?

我有一个config.js文件,在里面我想配置为大概这样:

var api_root = undefined;
if (DEV_ENV) {  // 开发环境
  api_root = "localhost:8000"
}else {  // 生产环境
  api_root = "103.22.43.12:8000"
}

请问这个DEV_ENV在vue.js项目中是有的吗?


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api_root = process.env.NODE_ENV == 'development' ? 'localhost:8000' : '103.22.43.12:8000';


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