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JavaScript & CSS Scaffolding

Introduction

While Laravel does not dictate which JavaScript or CSS pre-processors you use, it does provide a basic starting point using Bootstrap and Vue that will be helpful for many applications. By default, Laravel uses NPM to install both of these frontend packages.

CSS

Laravel Mix provides a clean, expressive API over compiling SASS or Less, which are extensions of plain CSS that add variables, mixins, and other powerful features that make working with CSS much more enjoyable. In this document, we will briefly discuss CSS compilation in general; however, you should consult the full Laravel Mix documentation for more information on compiling SASS or Less.

JavaScript

Laravel does not require you to use a specific JavaScript framework or library to build your applications. In fact, you don't have to use JavaScript at all. However, Laravel does include some basic scaffolding to make it easier to get started writing modern JavaScript using the Vue library. Vue provides an expressive API for building robust JavaScript applications using components. As with CSS, we may use Laravel Mix to easily compile JavaScript components into a single, browser-ready JavaScript file.

Removing The Frontend Scaffolding

If you would like to remove the frontend scaffolding from your application, you may use the preset Artisan command. This command, when combined with the none option, will remove the Bootstrap and Vue scaffolding from your application, leaving only a blank SASS file and a few common JavaScript utility libraries:

php artisan none

Writing CSS

Laravel's package.json file includes the bootstrap-sass package to help you get started prototyping your application's frontend using Bootstrap. However, feel free to add or remove packages from the package.json file as needed for your own application. You are not required to use the Bootstrap framework to build your Laravel application - it is simply provided as a good starting point for those who choose to use it.

Before compiling your CSS, install your project's frontend dependencies using the Node package manager (NPM):

npm install

Once the dependencies have been installed using npm install, you can compile your SASS files to plain CSS using Laravel Mix. The npm run dev command will process the instructions in your webpack.mix.js file. Typically, your compiled CSS will be placed in the public/css directory:

npm run dev

The default webpack.mix.js included with Laravel will compile the resources/assets/sass/app.scss SASS file. This app.scss file imports a file of SASS variables and loads Bootstrap, which provides a good starting point for most applications. Feel free to customize the app.scss file however you wish or even use an entirely different pre-processor by configuring Laravel Mix.

Writing JavaScript

All of the JavaScript dependencies required by your application can be found in the package.json file in the project's root directory. This file is similar to a composer.json file except it specifies JavaScript dependencies instead of PHP dependencies. You can install these dependencies using the Node package manager (NPM):

npm install

{tip} By default, the Laravel package.json file includes a few packages such as vue and axios to help you get started building your JavaScript application. Feel free to add or remove from the package.json file as needed for your own application.

Once the packages are installed, you can use the npm run dev command to compile your assets. Webpack is a module bundler for modern JavaScript applications. When you run the npm run dev command, Webpack will execute the instructions in your webpack.mix.js file:

npm run dev

By default, the Laravel webpack.mix.js file compiles your SASS and the resources/assets/js/app.js file. Within the app.js file you may register your Vue components or, if you prefer a different framework, configure your own JavaScript application. Your compiled JavaScript will typically be placed in the public/js directory.

{tip} The app.js file will load the resources/assets/js/bootstrap.js file which bootstraps and configures Vue, Axios, jQuery, and all other JavaScript dependencies. If you have additional JavaScript dependencies to configure, you may do so in this file.

Writing Vue Components

By default, fresh Laravel applications contain an Example.vue Vue component located in the resources/assets/js/components directory. The Example.vue file is an example of a single file Vue component which defines its JavaScript and HTML template in the same file. Single file components provide a very convenient approach to building JavaScript driven applications. The example component is registered in your app.js file:

Vue.component('example', require('./components/Example.vue'));

To use the component in your application, you may simply drop it into one of your HTML templates. For example, after running the make:auth Artisan command to scaffold your application's authentication and registration screens, you could drop the component into the home.blade.php Blade template:

@extends('layouts.app')

@section('content')
    <example></example>
@endsection

{tip} Remember, you should run the npm run dev command each time you change a Vue component. Or, you may run the npm run watch command to monitor and automatically recompile your components each time they are modified.

Of course, if you are interested in learning more about writing Vue components, you should read the Vue documentation, which provides a thorough, easy-to-read overview of the entire Vue framework.