iFlyChat JavaScript SDK has a function named 'closeChat' which can be used to close chat with a specific user or leave a room. You may use the function in the following manner:
iflychat.closeChat({
id:'1',/* id of the user or room with whom to close chat */
name:'admin'/*name of the user or room with whom to close chat */
});
This function takes a JS object as parameter which should have following properties: