How to use bootstrap 4 in angular 2?

Bootstrap4 alpha for Angular2 CLI (also works for Angular4 CLI)

If you are using the angular2 cli/angular 4 cli do 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 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";

If you are using scss, make sure you change your default styling to scss in .angular-cli.json:

  "defaults": {    "styleExt": "scss",    "component": {}  }

Bootstrap JS Components

For Bootstrap JS components to work you will still need to import bootstrap.js into .angular-cli.json under scripts (this should happen automatically):

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

Update 2017/09/13: Boostrap 4 Beta is now using popper.js instead of tether.js. So depending on which version you are using import either tether.js (alpha) or popper.js (beta) in your scripts. Thanks for the heads up @MinorThreat

The options above will work, however I use this approach via NPM:

1. Navigate to: Bootstrap 4 and retrieve the npm command

2. Run the NPM command obtained from step 1 in your project i.e

   npm install bootstrap@4.0.0-alpha.5 --save

3. After installing the above dependency run the following npm command which will install the bootstrap module npm install --save @ng-bootstrap/ng-bootstrap You can read more about this here

4. Add the following import into app.module import {NgbModule} from '@ng-bootstrap/ng-bootstrap'; and add NgbModule to the imports

5. Your app module will look like this:

   import { NgbModule } from '@ng-bootstrap/ng-bootstrap';@NgModule({   declarations: [   AppComponent,   WeatherComponent],  imports: [  BrowserModule,  FormsModule,  HttpModule,  NgbModule.forRoot(), // Add Bootstrap module here.],  providers: [],  bootstrap: [AppComponent]})export class AppModule { }

6. Open angular-cli.json and insert a new entry into the styles array :

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

7. Open src/app/app.component.html and add

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

   or if you would like to use ng alert then place the following on your app.component.html page

   <ngb-alert [dismissible]="true">I'm a dismissible alert :) </ngb-alert>

8. Now run your project and you should see the bootstrap alert message in the browser.

NOTE: You can read more about ng Components here

To use any visual library that needs JQuery just do the following:

• Add the library css in the index;
• Add the jquery js file to index;
• Add the library js files in the index;
• Install the library definition files (d.ts);
• Install jquery definitions files (d.ts);

If the library doesn't have definition files you could:

• Create the definition yourself;
• Create a global any variable with the same name of the library object, just to not get compiler errors;
• Use with errors (this is the worst option);

Now you can use the library inside Typescript;