How to add bootstrap to an angular-cli project

Question

IMPORTANT UPDATE: ng2-bootstrap is now replaced by ngx-bootstrap

ngx-bootstrap supports both Angular 3 and 4.

Update : 1.0.0-beta.11-webpack or above versions

First of all check your angular-cli version with the following command in the terminal:

ng -v

If your angular-cli version is greater than 1.0.0-beta.11-webpack, then you should follow these steps:

1. Install ngx-bootstrap and bootstrap:

   npm install ngx-bootstrap bootstrap --save
   

This line installs Bootstrap 3 nowadays, but can install Bootstrap 4 in the future. Keep in mind ngx-bootstrap supports both versions.

2. Open src/app/app.module.ts and add:

   import { AlertModule } from 'ngx-bootstrap';
   ...
   @NgModule({
   ...
   imports: [AlertModule.forRoot(), ... ],
   ... 
   })
   

3. Open angular-cli.json (for angular6 and later file name changed to angular.json ) and insert a new entry into the styles array:

   "styles": [
   "styles.css",
   "../node_modules/bootstrap/dist/css/bootstrap.min.css"
   ],
   

4. Open src/app/app.component.html and add:

   <alert type="success">hello</alert>
   

1.0.0-beta.10 or below versions:

And, if your angular-cli version is 1.0.0-beta.10 or below, then you can use below steps.

First, go to the project directory and type:

npm install ngx-bootstrap --save

Then, open your angular-cli-build.js and add this line:

vendorNpmFiles: [
   ...
   'ngx-bootstrap/**/*.js',
   ...
]

Now, open your src/system-config.ts then write:

const map:any = {
   ...
   'ngx-bootstrap': 'vendor/ngx-bootstrap',
   ...
}

...and:

const packages: any = {
  'ngx-bootstrap': {
    format: 'cjs',
    defaultExtension: 'js',
    main: 'ngx-bootstrap.js'
  }
};

Looking up for the key word > Global Library Installation on https://github.com/angular/angular-cli helps you finding the answer.

As per their document, you can take following steps to add Bootstrap library.

First install Bootstrap from npm:

npm install bootstrap@next

Then add the needed script files to to apps[0].scripts in angular-cli.json file:

 "scripts": [
    "../node_modules/bootstrap/dist/js/bootstrap.js"
    ],

Finally add the Bootstrap CSS to the apps[0].styles array:

"styles": [
    "styles.css",
    "../node_modules/bootstrap/dist/css/bootstrap.css"
    ],

Restart ng serve if you're running it, and Bootstrap 4 should be working on your app.

This is best solution. But if you don't restart ng serve it never works. It is strongly recommended to do this last action.

Do the following:

npm i bootstrap@next --save

This will add bootstrap 4 to your project.

Next go to your src/style.scss or src/style.css file (choose whichever you are using) and import bootstrap there:

For style.css

/* You can add global styles to this file, and also import other style files */
@import "../node_modules/bootstrap/dist/css/bootstrap.min.css";

For style.scss

/* You can add global styles to this file, and also import other style files */
@import "../node_modules/bootstrap/scss/bootstrap";

For scripts you will still have to add the file in the angular-cli.json file like so (In Angular version 6, this edit needs to be done in the file angular.json):

"scripts": [
        "../node_modules/jquery/dist/jquery.js",
        "../node_modules/tether/dist/js/tether.js",
        "../node_modules/bootstrap/dist/js/bootstrap.js"
],

At first, you have to install tether, jquery and bootstrap with these commands

npm i -S tether
npm i -S jquery
npm i -S [email protected] 

After add these lines in your angular-cli.json (angular.json from version 6 onwards) file

  "styles": [
    "styles.scss",
    "../node_modules/bootstrap/scss/bootstrap-flex.scss"
  ],
  "scripts": [
    "../node_modules/jquery/dist/jquery.js",
    "../node_modules/tether/dist/js/tether.js",
    "../node_modules/bootstrap/dist/js/bootstrap.js"
  ]

Since nobody referred to the official (angular-cli team) story on how to include Bootstrap yet: https://github.com/angular/angular-cli/wiki/stories-include-bootstrap

Include Bootstrap

Bootstrap is a popular CSS framework which can be used within an Angular project. This guide will walk you through adding bootstrap to your Angular CLI project and configuring it to use bootstrap.

Using CSS

Getting Started

Create a new project and navigate into the project

ng new my-app
cd my-app

Installing Bootstrap

With the new project created and ready you will next need to install bootstrap to your project as a dependency. Using the --save option the dependency will be saved in package.json

# version 3.x
npm install bootstrap --save

# version 4.x
npm install bootstrap@next --save

Configuring Project

Now that the project is set up it must be configured to include the bootstrap CSS.

• Open the file .angular-cli.json from the root of your project.
• Under the property apps the first item in that array is the default application.
• There is a property styles which allows external global styles to be applied to your application.
• Specify the path to bootstrap.min.css

It should look like the following when you are done:

"styles": [
        "../node_modules/bootstrap/dist/css/bootstrap.min.css",
        "styles.css"
      ],

Note: When you make changes to .angular-cli.json you will need to re-start ng serve to pick up configuration changes.

Testing Project

Open app.component.html and add the following markup:

<button class="btn btn-primary">Test Button</button>

With the application configured, run ng serve to run your application in develop mode. In your browser navigate to the application localhost:4200. Verify the bootstrap styled button appears.

Using SASS

Getting Started

Create a new project and navigate into the project

ng new my-app --style=scss
cd my-app

Installing Bootstrap

# version 3.x
npm install bootstrap-sass --save

# version 4.x
npm install bootstrap@next --save

Configuring Project

Create an empty file _variables.scss in src/.

If you are using bootstrap-sass, add the following to _variables.scss:

$icon-font-path: '../node_modules/bootstrap-sass/assets/fonts/bootstrap/';

In styles.scss add the following:

// version 3
@import 'variables';
@import '../node_modules/bootstrap-sass/assets/stylesheets/_bootstrap';

// version 4
@import 'variables';
@import '../node_modules/bootstrap/scss/bootstrap';

Testing Project

Open app.component.html and add the following markup:

<button class="btn btn-primary">Test Button</button>

With the application configured, run ng serve to run your application in develop mode. In your browser navigate to the application localhost:4200. Verify the bootstrap styled button appears. To ensure your variables are used open _variables.scss and add the following:

$brand-primary: red;

Return the browser to see the font color changed.