To add the number of days, use the Date() function to display the current date and then add two days
Example
Live Demo
<!DOCTYPE html> <html> <body> <script> var date, incDate; date = new Date(); document.write(date); var incDate = new Date(new Date().getTime()+(2*24*60*60*1000)); document.write("<br>"+incDate); </script> </body> </html>