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我有一個網站頁面，其中只包含一個字段給出收件箱中郵件數量的數據，而且我需要隨時刷新這些郵件，以便用戶在此頁面上可以看到有新消息。我怎麼能打電話給我的JS/ajax來做更新？如何調用頁面上沒有提交按鈕的JS/ajax？
我試過header（「Refresh：10」）;但客戶並不滿意，因爲它刷新了整個頁面，他只希望消息不要刷新，因爲他們進來...有人可以幫忙嗎？感謝
我這個頁面代碼：
<?php use_stylesheets_for_form($search_form) ?>
<?php use_javascripts_for_form($search_form) ?>
<div id='div_longgray_gradient2'>
<div id='div_float_img'>
<br/>
<table width='96%' border='0'>
<tr>
<td colspan='2' align='right'>
<form action="<?php echo url_for('profiles/search') ?>" method="post" >
<table>
<tr>
<td>
<span class='spn_med_lightblue_rbc'>Profile Search
</span>
<?php echo $search_form['uc_other']->render(array('default')); ?> </td>
<td><input class='submit_img' type="image" src="/images/rainbow/gobuttonbluesmall.png" value="Submit" alt="Submit"></td>
</tr>
</table>
</form>
</td>
</tr>
<tr>
<td rowspan='2' width='40px' align='left'>
<img src='/images/rainbow/arrow.png'>
</td>
<td align='left'>
<span class='spn_big_black_rbc'>WELCOME <?php echo $usr_profile->getName() ?></span>
</td>
<td align='left'>
<?php
if (0)
{
// $filename = $usr_profile->getMsisdn();
$filename = $usr_profile->getProfilePicPath();
if ($filename && file_exists($filename))
{
$source = imagecreatefromjpeg($filename);
}
else
{
$filename = $usr_profile->getDefaultProfilePicPath();
$source = imagecreatefromjpeg($filename);
echo "<span class='spn_big_black_rbc'>You have not uploaded an image yet</span>";
}
}
if($usr_profile->existsProfilePic()==FALSE)
{
echo "<span class='spn_big_black_rbc'>You have not uploaded an image yet</span>";
echo "</br>";
}
if($usr_profile->checkForMissingInfo()== 1)
{
echo "<span class='spn_big_black_rbc'>You have some missing info</span>";
echo " ";
echo link_to('Edit','profile/edit','class=link_medium');
}
?>
</td>
</tr>
<tr>
<td align='left'>
<span class='spn_med_lightblue_rbc'>TO RAINBOW</span>
<span class='spn_med_black_rbc'>CODE</span>
<span class='spn_med_lightblue_rbc'>...SHINE ON</span>
</td>
<td>
</td>
</tr>
</table>
<br/>
<table class='table_border_light' width='820px'>
<tr>
<td class='td_header_blue' colspan='3' align='left'>
<span class='spn_big_black_rbc'>
MY FEEDS
</span>
</td>
<td class='td_header_blue' colspan='3' align='left'>
<span class='spn_big_black_rbc'>
RAINBOWCODE NEWS
</span>
</td>
</tr>
<tr>
<td valign='top' colspan='3' width='50%' align='left'>
<span class='spn_med_black_rbc'>You have <?php echo $new_mail_cnt ?> new </span>
<?php echo link_to('Messages','messagebox/list','class=link_medium_blue'); ?>
</br>
<span class='spn_med_black_rbc'>You have
<?php
echo sizeof($block_records);
?> blocked users </span>
</td>
<td valign='top'colspan='3' width='50%' align='left'>
<ul>
<li>
<a href="http://spreadsheets.google.com/a/miranetworks.net/spreadsheet/viewform?formkey=dEVlYTdJTzZiU0JPTnZqYWlZQTJRZ0E6MQ" class='link_medium_blue'> Rate us! Complete the online questionnaire</a></b>
</li>
<?php
foreach($news as $news_item)
{
echo "<li>".$news_item->getNews(). "</li>";
$newsId = $news_item->getId();
if ($newsId == 1)
{
//some echos here to display text
}
}
?>
</ul>
</td>
</tr>
<tr>
<td colspan='3' align='left'>
<span class='spn_big_black_rbc'>
MOOD BAROMETER
<?php echo link_to('how does it work?','util/barometer','class=link_medium_blue'); ?>
</span>
<?php
include_component('profile','moodmetershow');
?>
</td>
<td colspan='3' align='left'>
<?php
include_component('profile','moodmeter');
?>
</td>
</tr>
<tr>
<td colspan='3' align='left'>
</td>
</tr>
</table>
</div>
</div>
我加入這個爲$ new_mail_cnt：然後
echo $new_mail_cnt = '<script type="text/javascript">getMessages();</script>';
我有：
<script language="JavaScript" type="text/javascript">
var receiveReq = getXmlHttpRequestObject();
var mTimer;
function getXmlHttpRequestObject()
{
if (window.XMLHttpRequest)
{
return new XMLHttpRequest();
}
else if(window.ActiveXObject)
{
return new ActiveXObject("Microsoft.XMLHTTP");
}
else
{
document.getElementById('p_status').innerHTML =
'Status: Cound not create XmlHttpRequest Object.' +
'Consider upgrading your browser.';
}
}
function getMessages()
{
receiveReq = getXmlHttpRequestObject();
if (receiveReq.readyState == 4 || receiveReq.readyState == 0)
{
receiveReq.open("POST", 'getMessage.php', true);
receiveReq.onreadystatechange = handleReceiveMessage();
receiveReq.send(null);
document.getElementById('new_messages').innerHTML = receiveReq.responseXML; //not sure here
}
mTimer = setTimeout('getMessage();',2000);
}
function handleReceiveMessage()
{
if (receiveReq.readyState == 4)
{
var chat_div = document.getElementById('div_chat');
var xmldoc = receiveReq.responseXML;
var message_nodes = xmldoc.getElementsByTagName("message");
}
}
</script>
謝謝請看到一些代碼，我添加...所有這些代碼只是爲了更新/刷新$ new_mail_cnt？哎呀！ –