Add Bootstrap 4 to Angular 6 or Angular 7 applicat

问题:

I am working on Angular application using bootstrap 4.

I need help related to scss adding in my angular application.

My question is:

• Is the way of adding bootstrap 4 scss same in Angular 6 and Angular 7 or not?

i.e.

npm install bootstrap --save  

And, open angular.json file and add bootstrap file path to the styles section. Like:

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

Is the above way is same for both the version of angular.

回答1:

You need to do the following:

Add Bootstrap to package.json (which is done with npm install bootstrap --save)

Add Bootstrap to angular.json (jQuery is required too)

  "styles": [
     "styles.css".
     "../node_modules/bootstrap/dist/css/bootstrap.min.css"
  ],
  "scripts": [
     "../node_modules/jquery/dist/jquery.min.js",
     "../node_modules/popper.js/dist/umd/popper.min.js",
     "../node_modules/bootstrap/dist/js/bootstrap.min.js"
  ],

Reference Bootstrap in the Angular app (app.module.ts)

import bootstrap from "bootstrap";

Demo: https://codesandbox.io/s/kmm2q7zvko
Article: https://medium.com/wdstack/angular-7-bootstrap-4-starter-25573dff23f6

回答2:

**OPTION-1**

execute npm install bootstrap@4 jquery --save

The JavaScript parts of Bootstrap are dependent on jQuery. So you need the jQuery 
JavaScript library file too.

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

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

**OPTION-2**

ng-bootstrap It contains a set of native Angular directives based on Bootstrap’s 
markup and CSS. As a result, it's not dependent on jQuery or Bootstrap’s JavaScript

npm install --save @ng-bootstrap/ng-bootstrap

After Installation import it in your root module and register it in @NgModule 
imports` array

    import {NgbModule} from '@ng-bootstrap/ng-bootstrap';
    @NgModule({
      declarations: [AppComponent, ...],
      imports: [NgbModule.forRoot(), ...],
      bootstrap: [AppComponent]
    })

ng-bootstrap requires Bootstrap's 4 css to be added in your project. you need to 
Install it explicitly via:
npm install bootstrap@4  --save In your angular.json add the file paths to the styles 
array in under build target

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