I'm curious about how to post data without refreshing the page, similar to how Facebook updates comments instantly without a page reload. I understand how to insert data into MySQL using AJAX without refreshing the page, but my question is: how can I insert data and display it simultaneously without reloading the page?
Thank you
Although OSDM's solution may handle the desired behavior to some extent, it is not precisely what you are looking for. It only triggers updates when a user uploads something, rather than as new items are created in the system.
There are two main methods to achieve real-time data retrieval from the server: AJAX and WebSockets.
AJAX - Asynchronous JavaScript and XML allows you to fetch content from a server in the background and then dynamically insert the retrieved data into your page. However, this process needs to be manually initiated, meaning it does not provide true real-time functionality. You can trigger data fetching through manual actions (like clicking a button) or on a schedule (such as every few seconds or minutes). With AJAX, the server doesn't have visibility into what content the page is currently displaying, so each call typically requests all information to refresh the entire page instead of just appending new data.
WebSockets - WebSockets serve as an enhanced form of HTTP connection where the client and server establish a bidirectional communication channel. By setting up web sockets between your server and website, any new content added to the MySQL database can be instantly relayed to the client. Unlike AJAX, WebSockets deliver updates in real time as they happen on the server side. This eliminates the need for periodic fetching since updates are directly pushed to the client without manual intervention. Popular platforms like Facebook use WebSockets to stream live updates to users instead of relying on user-triggered actions or timed intervals for data retrieval.
To manipulate the HTML on your page using JavaScript or jQuery, you can easily send data to your server and update the content without refreshing the page. Take a look at this example using jQuery:
$("#submit").click(function(){
$("#comments").append("<div class=newcomment>" + $("#textbox").val() + "</div>");
$.POST('upload.php', { comments: $("#textbox").val() });
});
This code snippet sends the comment to upload.php and adds it to the comment section of your webpage. If you also need to fetch data from the server, simply add some JavaScript to the upload.php file like this:
$("#getdatefromserver").load('upload.php', { comments: $("#textbox").val() });By using JavaScript and jQuery, you can dynamically update your page content and interact with the server seamlessly.
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