Install updates and upgrade your system:
$ sudo apt update
$ sudo apt upgrade
Install required libraries:
| // encode(decode) html text into html entity | |
| var decodeHtmlEntity = function(str) { | |
| return str.replace(/&#(\d+);/g, function(match, dec) { | |
| return String.fromCharCode(dec); | |
| }); | |
| }; | |
| var encodeHtmlEntity = function(str) { | |
| var buf = []; | |
| for (var i=str.length-1;i>=0;i--) { |