Add bootstrap to angular

Step 2. Add Bootstrap to Angular Using angular.json

Open the angular.json file of your project and include:

            "styles": [
              "./node_modules/bootstrap/dist/css/bootstrap.css",
              "src/styles.css"              
            ],
            "scripts": [
              "./node_modules/jquery/dist/jquery.js",
              "./node_modules/bootstrap/dist/js/bootstrap.js"
            ],

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Step 1. Install Bootstrap & Jquery using NPM

 $ npm install --save bootstrap

 $ npm install --save jquery

OR

Step 1. Install Bootstrap & Jquery using Yarn

 $ yarn add bootstrap

 $ yarn add jquery