Cannot send special characters via jQuery ajax

Data (tags) must be encoded before sending it to server using encodeURIComponent()

Below code is working fine for sending & and "" or any special characters via ajax call:

specialChar1= "JΛ̊KE#2@#*&($^@%#*@#%))*$&@*(""" ;
specialchar2 ="??&!!--##";
url = "/get/" + encodeURIComponent( specialChar1) +"/"+  encodeURIComponent ( specialchar2 )