Show you how to view the vue environment

With the rapid development of front-end technology, Vue has become one of the mainstream front-end frameworks. When using Vue for project development, it is necessary to know how to view the Vue environment. This article will show you how to view the vue environment.

1. View the Vue environment through the command line

We can view the Vue version information and related configuration information of the current environment through the command line. In the Vue CLI 3.x version, we can use the following command:

vue --version       // 查看Vue的版本信息
vue info            // 查看当前环境的配置信息

After entering the above command, we can see the relevant output information. If you are using an older version, please refer to the official documentation for the corresponding commands.

2. View the configuration file of the Vue project

When the Vue project is initialized, Vue will automatically generate some configuration files. We can understand the relevant configuration information of the current environment by viewing these configuration files.

1. package.json

package.json is something similar to a configuration file, which stores information and dependencies of our project. We can check the Vue version information inside.

In this file, we can view the following information:

{
  "name": "my-vue-project",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "dependencies": {
    "vue": "^2.6.11"
  }
}

We can view the vue version information in the dependencies attribute.

2. .env file

In Vue CLI 3.x version, we can configure environment variables by adding .env file. In this file, we can configure different environment variables such as development environment, test environment and production environment.

We can set the following content in the .env file:

VUE_APP_TITLE=My Vue Project    // 设置一个环境变量

In the code, we can use this environment variable in the following ways:

console.log(process.env.VUE_APP_TITLE);

3. Browser Debugging and viewing the Vue environment

When developing Vue, it is very common for us to debug through the browser. We can understand the current Vue environment information by using the browser's developer tools.

1. Vue plug-in

We can use the Vue plug-in to view the environment information of the current Vue instance. The Vue plug-in can monitor the life cycle of the Vue instance and output relevant information about the instance.

You can use the following method to introduce the Vue plug-in:

import Vue from 'vue';
import VueInfoPlugin from './plugins/vue-info';

Vue.use(VueInfoPlugin);

After Vue is instantiated, we can see the output information in the console.

2. Vue Developer Tools

Vue provides official developer tools that can help us debug Vue applications in the browser. After opening the developer tools, we can view relevant information about the current Vue environment under the Vue tab.

4. Summary

This article introduces several methods to understand how to view the Vue environment. We can understand relevant information about the current Vue environment through the command line, configuration files, and browser debugging. When we need to debug and locate problems, these methods will help us locate the problem more quickly.

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