Make Category Posts Widget for JagoDesain Themes with AJAX using Vanilla Javascript

Make Categorised Posts Widget for JagoDesain Templates with AJAX using Vanilla Javascript. Hello! Welcome to Fineshop Design. As we know there is currently no widget in Blogger Layout that allows us to show posts with specific label, but we can sort posts as per their label with AJAX (Asynchronous JavaScript And XML) call to receive the JSON (JavaScript Object Notation) data from Blog Feeds.