The FullCalendar library allows the user to drag and drop event instances from one date to another. It also supports event resizing to extend or change event duration. This screenshot shows the output of the PHP calendar event management example by integrating FullCalendar library. Free . require "connection.php"; step, fetch data from the database using ajax request. I am trying use the FullCalendar v5 plugin to add a calendar on my website. One: You need to manually specify the Json data type you want to return. Here is what I have done let calendarElement = document.getElementById(' here i dont want to use