title: Property 'modal' does not exist on type 'JQuery' Angular6
body: <p>i have below error when i use jQuery in TypeScript Angular6 please help me this</p>
  
  <pre><code>jQuery('#assignsp').modal('show');
  </code></pre>
  
  <p>following these steps</p>
  
  <p>3 Steps:</p>
  
  <p>Install jQuery. (skip if already installed)</p>
  
  <p>npm install jquery --save
  Install types for jQuery.</p>
  
  <p>npm install @types/jquery --save</p>
  
  <pre><code>Import jQuery in app.module.ts.
  
  import * as $ from 'jquery';
  </code></pre>
  
  <p>its show me Error </p>
  
  <p>error TS2339: Property 'modal' does not exist on type '<code>JQuery&lt;HTMLElement&gt;</code></p>
  
  <blockquote>
    <p>error TS2339: Property 'modal' does not exist on type 'JQuery'.</p>
  </blockquote>