<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>test</title> <link rel="stylesheet" type="text/css" href="https://code.jquery.com/ui/1.12.1/themes/pepper-grinder/jquery-ui.css"> <link rel="stylesheet" type="text/css" href="jquery-ui.multidatespicker.css"> <script type="application/javascript" src="https://code.jquery.com/jquery-2.2.4.js"></script> <script type="application/javascript" src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script> <script type="application/javascript" src="jquery-ui.multidatespicker.js"></script> </head> <body> <div id="mdp-demo"></div> <script> var today = new Date(); var y = today.getFullYear(); $('#mdp-demo').datepicker({ // addDates: ['1/14/'+y, '1/19/'+y, '1/14/'+y, '2/16/'+y], numberOfMonths: 2, showCurrentAtPos: 1 }); </script> </body> </html>