How to use Prettier to format code in Vue

Vue is a popular JavaScript framework that is widely used in web development. In daily development, we need to format the code to maintain a unified code style. In Vue, we can use the Prettier plug-in to conveniently format code.

Prettier is a code formatting tool that can help us automatically format the code. Compared with manually modifying the code format, using Prettier can greatly improve our work efficiency and ensure the consistency of the code style.

The steps to use Prettier in the Vue project are as follows:

Step 1: Install the Prettier plug-in

We can use npm or yarn to install Prettier in the command line, for example ：

npm install --save-dev prettier

Or：

yarn add --dev prettier

After the installation is complete, create a .prettierrc file in the root directory of the project and configure the parameters of Prettier in it. For example, we can set the file type to Vue and specify the indentation to 2 spaces:

{
  "parser": "vue",
  "tabWidth": 2
}

Step 2: Configure the editor

We need to configure the Prettier plugin in the editor , so that you can easily use it to format your code. Commonly used code editors such as VS Code, Sublime Text, Atom, etc. can use the Prettier plug-in.

Taking VS Code as an example, we need to search for "Prettier" in "Settings", and then configure it as follows:

"editor.formatOnSave": true,
"[javascript]": {
  "editor.formatOnSave": false
},
"[vue]": {
  "editor.formatOnSave": true,
  "prettier.tabWidth": 2
}

The configuration here means: when saving a Vue file, Prettier will be automatically used. Format the code and use 2 spaces for indentation. At the same time, automatic formatting when saving JavaScript files is prohibited.

Step 3: Use Prettier to format the code

Now that we have completed the installation and configuration of Prettier, the code will be automatically formatted when saving the Vue file in the editor.

In addition, we can also use the command line to use Prettier to format the code. For example, we can use the following command to format the code in the entire project:

prettier --write "src/**/*.vue"

This command can batch format all Vue files in the "src" directory.

Summary

Using Prettier can easily format the code in the Vue project, saving the time of manually modifying the code format, while also ensuring the consistency of the code style. We just need to follow the above steps to configure it to use Prettier easily.

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