[英]Display POST data in HTML element
I need some example to display POST data inside HTML DIV element. 我需要一些示例来在HTML DIV元素中显示POST数据。 Like this: Beeceptor
像这样: Beeceptor
I make an example using PHP and jQuery. 我使用PHP和jQuery做一个例子。
It works fine but I don't know if there a better solution instead of using SESSIONS and interval function? 它工作正常,但我不知道是否有更好的解决方案而不是使用SESSIONS和interval函数?
The POST data is made by using an external program (not by jQuery itself). POST数据是通过使用外部程序(而不是jQuery本身)生成的。
PHP PHP
session_id('13245');
session_start();
$session_id = session_id();
if($data['payload'] !== null)
{
$_SESSION['payload'] = $data['payload'];
$_SESSION['timestamp'] = microtime();
}
else
{
$_SESSION['payload'] = $_SESSION['payload'];
$_SESSION['timestamp'] = $_SESSION['timestamp'];
}
echo json_encode(array('timestamp' => $_SESSION['timestamp'], 'payload' => $_SESSION['payload']));
?>
jQuery jQuery的
$(document).ready(function () {
var oldTimeStamp = 0;
setInterval(function()
{
$.ajax({
type:"post",
url:"post.php",
datatype:"json",
success:function(data)
{
var obj = jQuery.parseJSON(data)
if(oldTimeStamp != obj.timestamp)
{
oldTimeStamp = obj.timestamp;
$('#displayData').append('timestamp: ' + obj.timestamp);
$('#displayData').append(' rawPayload: ' + obj.payload);
$('#displayData').append('<br />');
}
}
});
}, 1000);//time in milliseconds
});
Any help will be greatly appreciated. 任何帮助将不胜感激。
you can go for "then()" or "done()", immediate after finishing ajax call. 您可以在完成Ajax调用后立即使用“ then()”或“ done()”。 here is the sample:
这是示例:
$.ajax({
type:"post",
url:"post.php",
datatype:"json",
success:function(data)
{...}
}).then(function (data){
var obj = jQuery.parseJSON(data)
if(oldTimeStamp != obj.timestamp)
{
oldTimeStamp = obj.timestamp;
$('#displayData').append('timestamp: ' + obj.timestamp);
$('#displayData').append(' rawPayload: ' + obj.payload);
$('#displayData').append('<br />');
}
}); });
You are trying to make a real-time application such as chatting and real-time visualizations. 您正在尝试制作一个实时应用程序,例如聊天和实时可视化。 In order to achive this I suggest you to write with NodeJs SOCKET.IO
为了达到这个目的,我建议您使用NodeJs SOCKET.IO编写
If you use PHP it will make your server lode more harder than JavaScript programs like socket.io. 如果使用PHP,它将使服务器的性能比socket.io等JavaScript程序更难。
Your Question: It works fine but I don't know if there a better solution instead of using SESSIONS and interval function? 您的问题:效果很好,但是我不知道是否有更好的解决方案而不是使用SESSIONS和interval函数?
Answer: Definitely it's a bad practice which trigger the server every seconds even there are no new updates. 答:绝对不明智的做法是,即使没有新更新,它也会每秒触发一次服务器。 Let's assume you have 100 users online at the same time so your server will be called 100 times every second which is really a more load to the server.
假设您同时有100个用户在线,那么服务器每秒将被调用100次,这实际上是给服务器增加了负载。
Example: https://socket.io/get-started/chat 示例: https : //socket.io/get-started/chat
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