I am currently using this ajax code and I was wondering if anyone knows how to change it to long polling.
Here is the code I am using:
var chat = {}
chat.fetchMessages = function () {
$.ajax({
url: 'ajax/ajax/chat.php',
type: 'POST',
data: { method: 'fetch' },
success: function(data) {
$('#chats').html(data);
}
});
}
chat.interval = setInterval(chat.fetchMessages, 1000);
To ensure continuity, the next call of fetchMessage must be placed within the callback function of the previous call:
var chat = {}
chat.fetchMessages = function () {
$.ajax({
url: 'ajax/ajax/chat.php',
type: 'POST',
data: { method: 'fetch' },
success: function(data) {
$('#chats').html(data);
chat.fetchMessages(); // initiating next call
}
});
}
chat.fetchMessages(); // initial call
It appears that the code mentioned above is functioning correctly, but there is a concern that it may lead to an excessive amount of traffic as a result of immediately calling the function. This could potentially cause an increase in memory usage by the browser due to continuous long polling. It is recommended to introduce a settimeout function to create a delay between function calls. Additionally, clearing the cache may be beneficial. Consider exploring other options such as comet or SignalR as well.
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