title: Use external JavaScript file's in angular 7
body: <p>I'm trying to use external JavaScript files in angular 7 project and for this I have added multiple JavaScript files to angular.json file as in image  </p>
  
  <p><a href="https://i.stack.imgur.com/Zn9yQ.png" rel="nofollow noreferrer">JavaScript files added in angular.json file</a></p>
  
  <p>and also loading default multiple JavaScript files on page with make any reference manual so, from where they are refereed.</p>
  
  <p>Please suggest the right way to use external JavaScript files in Angular 7 and also suggest how should we use the packages JavaScript files in Angular 7.</p>
  
  <p>Thanks in advance.</p>