title: to give print job directly to printer angular 6
body: <p>When it comes to web-based POS (point-of-sales), nothing beats the necessity of printing the bill immediately.However, there are not so many options on how to command the printer directly from web page — particularly when developing with Angular framework.I searched everywhere on web but found nothing. </p>
  
  <p>Is there any third party library or something to accomplish my aim.?</p>