刷新AJAX数据每隔X分钟/秒，jQuery的 [英] Reload AJAX data every X minutes/seconds, jQuery

问题描述

我编一个CMS，有一个日志谁最近登录到系统中。 presently，该数据被送入通过Ajax一个jQuery UI选项卡。我希望把这个信息到侧边栏的主网页，并通过AJAX加载它每隔30秒（或一定的时间规定的期限）。

I programmed a CMS that has a log of who has recently logged into the system. Presently, this data is fed into a jQuery UI tab via Ajax. I would like to put this information into a sidebar on the main page and load it via AJAX every 30 seconds (or some set period of time).

我怎么会去这样做呢？请问PHP反应必须是JSON codeD？我是相当新的AJAX和JSON数据。

How would I go about doing this? Does the PHP response need to be JSON coded? I am fairly new to AJAX and JSON data.

下面是PHP我目前使用拉从用户表的详细信息 -

Here is the PHP I am currently using to pull details from the users table-

<?php
$loginLog = $db->query("SELECT name_f, name_l, DATE_FORMAT(lastLogin, '%a, %b %D, %Y %h:%i %p') AS lastLogin FROM user_control ORDER BY lastLogin ASC LIMIT 10");
while ($recentLogin = $loginLog->fetch()) {
echo $recentLogin['name_f'] . " " . $recentLogin['name_l'] . " - " . $recentLogin['lastLogin'];
}
?>

谢谢！ 更新

好了，这是我迄今为止..部分我卡上是如何通过JSON循环，将其输入框。它工作正常，只要我使用的只是一个结果，并确保它不是在[]的。我只是学习Ajax和JSON，由于某种原因，它不来我太容易了。

Okay, this is what I have so far.. the part I'm stuck on is how to loop through JSON and enter it into the box. It works fine as long as I use just one result and assure it is not in [ ]'s. I'm just learning Ajax and JSON, for some reason it isn't coming to me too easily.

使用Javascript -

Javascript -

$(document).ready(function(){

                function refreshUsers(){

                    $.getJSON('json.php', function(data) {

                            for (var i = 0; i < data.length; i++) {

                                $("#loadHere").html('<p>' + data.name + ' ' + data.lastLogin + '</p>');

                            }

                });

            }

                var refreshInterval = setInterval(refreshUsers, 30 * 1000);

                refreshUsers();

            });

什么我的PHP脚本输出 -

What my PHP script outputs -

[{"name":"Joe Smith","lastLogin":"Fri, May 21st, 2010 08:07 AM"},{"name":"Jane Doe","lastLogin":"Fri, May 21st, 2010 07:07 AM"}]

谢谢！

推荐答案

PHP端，使用的 json_en code（）。

客户端，使用 $ .getJSON（）：

function refreshUsers(){
  $.getJSON(url, postData, function (data, textStatus){
    // Do something with the data
  });
}

// Keep interval in a variable in case you want to cancel it later.
var refreshInterval = setInterval(refreshUsers, 30 * 1000);

通过这两个，你应该有很多开始使用。不仅如此，你会要求我们为你工作：）

With these 2, you should have a lot to get started with. More than this, you'd be asking us to work for you :)

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