通过webpack导入Angular中的Jquery

npm install jquery --save

{
  "projects": {
    "your-project-name": {
      "architect": {
        "build": {
          "options": {
            "scripts": [
              "node_modules/jquery/dist/jquery.min.js"
            ]
          }
        }
      }
    }
  }
}

import { Component, OnInit } from '@angular/core';

declare var $: any;

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent implements OnInit {
  title = 'my-angular-app';

  ngOnInit() {
    $(document).ready(function() {
      console.log('jQuery is ready!');
      $('body').css('background-color', 'lightblue');
    });
  }
}

ng serve