Getting a javascript error : chat.server.ConnectClient(clientName); is not a function

Getting a javascript error : chat.server.ConnectClient(clientName); is not
a function

References

Reference NO 1

http://stackoverflow.com/questions/15199902/getting-a-javascript-error-chat-server-connectclientclientname-is-not-a-fun

Reference NO 2

http://stackoverflow.com/questions/8917461/qt-bidirectional-client-server-using-qtcpsocket-and-qtcpserver

Reference NO 3

http://socket.io/

Reference NO 4

http://www.opendebug.com/article/532937

Reference NO 5

http://www.codeproject.com/Articles/25261/A-WCF-WPF-Chat-Application

Reference NO 6

http://www.roseindia.net/tutorialhelp/comment/81569

Reference NO 7

http://publib.boulder.ibm.com/infocenter/sametime/v8r0/topic/com.ibm.help.sametime.home.doc/strn8.pdf

Reference NO 8

http://dis.4chan.org/read/prog/1196829427