Though I can see that I also should add a file called jquery.validate.js. But where do I find this file? It is not contained in the downloaded package called: jquery.ui.datepicker.validation.package-1.0.1. 3. JQuery Datepicker is a part of JQueryUI and first we have to download JQueryUI from the JQueryUI site.Jquery-ui.js. The above listed three files can be taken from CDN or locally from the project. Requires just a single line of JS code to operate. Themeable CSS file with documentation. Demo Download.5. jQuery UI Datepicker in WordPress. Why its brilliant: Adding the jQuery UI library to your static HTML page is a breeze.
Download now. Add the jquery.ui.datepicker.