Introduction: As as web Developer some times you need encryption and Decryption in Java Script. for this purpose a quick code snap is given below. Solution: Java Script Encryption Function: function Encrypt(PlainText, Key)  {             var to_enc = PlainText.toString().replace(/^\n+/, "" ).replace(/\n+$/, "" );             var xor_key = Key;             var the_res = "" ;             for (i = 0; i < to_enc.length; ++i) {                 if (to_enc.charCodeAt(i) <= 32) {                     the_res += String.fromCharCode((to_enc.charCodeAt(i))); ...