Drupal

What is Drupal?

Drupal is a community managed, open-source content management system – CMS, which is built as CMF – content management framework. With Drupal, you can get features like user management,
content management and access management out of the box.

Now, the question is, what is a content management system?

Tags

Drupal 8 : Get title and meta tags from Site URL using Ajax

This CodeLet set title and body field values using Ajax. 
Place this CodeLet to your custom module file(.module) or Create a Custom module for Drupal 8 as per documentation https://www.drupal.org/docs/8/creating-custom-modules.

First of all add a field(field_link) to your content type. after that add an ajax to that field as per CodeLet.
Ajax example to replace multiple fields on ajaxCallback.
You set multiple fields value on ajax trigger in Drupal 8.