How to Include and Use jQuery in Angular CLI Project
A simple, easy process

You can include jQuery in a very few and easy steps.
First, install jQuery using npm as follows:
npm install jquery — save
Second, go to the ./angular-cli.json
file at the root of your Angular CLI project folder, and find the scripts: []
property, and include the path to jQuery as follows:
"scripts": [ "../node_modules/jquery/dist/jquery.min.js" ]
Note: If you want to use bootstrap in your application, or if you already have in your project, make sure to include jQuery before including the bootstrap JavaScript file. Bootstrap’s JavaScript file requires jQuery.
"scripts": [ "../node_modules/jquery/dist/jquery.min.js","../node_modules/bootstrap/dist/js/bootstrap.js"]
After including jQuery, stop running your Angular CLI application. Then, re-run it using Ng serve.
Now, to use jQuery, all you have to do is to import it in whatever component you want to use jQuery.
import * as $ from 'jquery';(or)declare var $: any;
Take a look at the below code that uses jQuery to animate div
on click, especially in the second line. We are importing everything as $ from jQuery.
This demo of the Angular CLI project uses jQuery.

Take a look at this GitHub demo.
That’s all for now!