how to create simple modal, can i have snippet please

wanted display this dialog from same page rather than other file using modal_show(), can i have sample code please

You can display custom HTML using DayPilot.Modal.showHtml():

var modal = new DayPilot.Modal();
// ...
modal.showHtml("<div>text</div>");

working but i could see it's using jquery very old version..

DayPilot itself doesn't require jQuery. Some of the tutorials use jQuery to implement some features (such as handling user actions on <select> elements etc.).

But even the tutorials don't require any specific jQuery version - you can upgrade to the latest jQuery version or replace the helper code with pure JavaScript implementation.