hello i have developed the chat application using socket.io, expressjs and
mongoose it works fine. it refreshes after some seconds and fetches new
clients from db if exist. problem is that user can feel that div is
refreshsing.and also some time take soem time in response. how to avoid
this case. here is my code
setInterval(function () {
var allOnLine;
allOnLine = io.sockets.clients();
for (var client in allOnLine) {
if (allOnLine[client].username == "undefined") {
continue;
} else {
notifyAll(allOnLine[client].username);
}
}}, 50000);
and here is notify all method
function notifyAll(userName) {
contactModel.find({'userId':userName}, (function (err, contactModel) {
usernames = [];
var contacts = contactModel;
for (var a = 0; a < contacts.length; a++) {
usernames[a] = contacts[a].contactId;
}
var allOnLine;
allOnLine = io.sockets.clients();
for (var client in allOnLine) {
if (allOnLine[client].username == "undefined") {
continue;
} else {
for (var i = 0; i < usernames.length; i++) {
if (allOnLine[client].username == usernames[i]) {
usernames[i] = usernames[i] + " -On";
}
allOnLine[client].username);
}
}
}
io.sockets.to(userName).emit('updateusers', usernames);
}));
}
any help please
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