blocks|key|2121717|text|setInterval(function()+{
++if+(confirm("Its+Been+5+Minutes.+Would+you+like+to+refresh"))+{
++++window.location.reload(true);
++++//Or+instead+of+refreshing+the+page+you+could+make+an+ajax+call+and+determing+if+a+newer+page+exists.++IF+one+does+then+reload.

++}
},+300000);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|2121718|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>setInterval(function() {
 if (confirm("Its Been 5 Minutes. Would you like to refresh")) {
 window.location.reload(true);
 //Or instead of refreshing the page you could make an ajax call and determing if a newer page exists. IF one does then reload.

 }
}, 300000);
</code></pre>

blocks|key|3712145|text|实际上，您对定时Ajax测试的想法是一个很好的想法。我不确定这正是StackOverflow使用的，但它会定期检查是否发布了其他答案，并每隔一段时间向用户显示是否有更新。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3712146|我认为这是非常理想的，原因如下：|3712147|3712148|它不显眼-如果读者不关心|unordered-list-item|3712149|它不会浪费带宽，它可以很容易地忽略更新-除非用户选择|3712150|它是信息性的-用户知道有更新，并可以选择对其采取行动。|3712151|3712152|我的观点是-让ajax脚本将最新的post+id发送到一个检查新脚本的脚本。这个脚本可以查询你的数据库，看看是否有新的帖子，以及有多少。它可以返回这个数字。如果有新的帖子，显示一些(非模态)消息，包括更新的数量，并让用户决定如何处理它。|3712153|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|S|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|T|8|@]|9|@]|A|$]]|$1|H|3|I|5|G|7|U|8|@]|9|@]|A|$]]|$1|J|3|K|5|G|7|V|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|X|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|P|$]]

Actually, your thought on a timed Ajax test is an excellent idea. I'm not sure that is exactly what StackOverflow uses, but it checks periodically to see if other answers have been posted and shows the user, on an interval, if there are updates.

I think this is ideal for these reasons:

<ul>
<li>It's unobtrusive - the reader can easily ignore the update if they don't care</li>
<li>It won't waste bandwith - no reloading unless the user chooses to</li>
<li>It's informative - the user knows there's an update and can choose to act on it.</li>
</ul>

My take on how - have the ajax script send off the latest post id to a script that checks for new scripts. This script can query your database to see if there are any new posts, and how many there are. It can return this number. If there are new posts, show some (non modal) message including the number of updates, and let the user decide what to do about it.

blocks|key|3712194|text|你可以在javascript中使用setInterval函数。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3712195|这是一个样例|3712196|setInterval("refresh+function",+milliseconds,+lang);|code-block|syntax|javascript|3712197|您将使用它将一个名称传递给一个函数，该函数实际刷新第一个参数的页面，以及第二个参数的刷新间隔毫秒数(300000表示5分钟)。第三个参数lang是可选的|3712198|entityMap|0|LINK|mutability|MUTABLE|url|http://www.w3schools.com/jsref/met_win_setinterval.asp^0|H|B|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@$A|V|B|W|1|X]]|C|$]]|$1|D|3|E|5|6|7|Y|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|Z|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|C|$]]|$1|M|3|-4|5|6|7|11|8|@]|9|@]|C|$]]]|N|$O|$5|P|Q|R|C|$S|T]]]]

You can use the <a href="http://www.w3schools.com/jsref/met_win_setinterval.asp" rel="nofollow">setInterval</a> function in javascript.

here's a sample

<pre><code>setInterval("refresh function", milliseconds, lang);
</code></pre>

You will use it passing a name to a function that actually refresh the page for the first param and the number of milliseconds between refresh for the second param (300000 for 5 minutes). The third parameter lang is optional

blocks|key|1374967|text|如果用户想要与分数交互并点击东西，那么仅仅刷新它们的页面就有点粗鲁了。我认为做一些像通知页面已经更新这样的事情将是理想的。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1374968|我会使用jQuery并对服务器上的文件执行ajax调用，或者执行一些将返回更新数据的操作。如果它比抛出一个咆哮消息更新|1374969|Gritter+-+jQuery+Growl+System+Demo+of+what+a+Growl+is+using+Gritter|offset|length|1374970|咆哮消息可能会出现任何更改，新的分数，然后在该消息中的选项，以刷新和查看新的结果。|1374971|jQuery+Ajax+information|1374972|entityMap|0|LINK|mutability|MUTABLE|url|http://boedesign.com/blog/2009/07/11/growl-for-jquery-gritter/|1|http://boedesign.com/demos/gritter/|2|http://api.jquery.com/jQuery.ajax/^0|0|0|0|T|0|U|11|1|0|0|0|N|2|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Y|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|Z|8|@]|9|@$F|10|G|11|1|12]|$F|13|G|14|1|15]]|A|$]]|$1|H|3|I|5|6|7|16|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|17|8|@]|9|@$F|18|G|19|1|1A]]|A|$]]|$1|L|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S]]|T|$5|O|P|Q|A|$R|U]]|V|$5|O|P|Q|A|$R|W]]]]

If the user would be interacting with the scores and clicking on things it would be a little rude to just refresh the page on them. I think doing something like a notification that the page has been updated would be ideal.

I would use jQuery and do an ajax call to the file on the server or something that will return the updated data. If it's newer than throw up a Growl message

<a href="http://boedesign.com/blog/2009/07/11/growl-for-jquery-gritter/" rel="nofollow">Gritter - jQuery Growl System</a>
<a href="http://boedesign.com/demos/gritter/" rel="nofollow">Demo of what a Growl is using Gritter</a>

A Growl message would come up possibly with whatever was changed, new scores and then an option within that message to refresh and view the new results.

<a href="http://api.jquery.com/jQuery.ajax/" rel="nofollow">jQuery Ajax information</a>

In the past, when I've covered events, I've used a meta-refresh with a 5 minute timer to refresh the page so people have the latest updates.

Realizing that this may not be the perfect way to do it (doesn't always work in IE, interrupts a person's flow, restarts things for people with screen readers, etc.) I'm wondering if there's any other way to do handle this situation.

Is it possible to have something like ajax check every few minutes if the html file on the server is newer and have it print a message saying "Update info available, click here to refresh"?

If that's crazy, how about a javascript that just counts down from 5 minutes and just suggests a refresh.

If anyone could point me to tutorials or code snippets I'd appreciate. I just play a programmer on TV. :-)

Alternatives to using meta-refesh for updating a page

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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在过去，当我报道事件时，我使用元刷新和5分钟的计时器来刷新页面，这样人们就可以获得最新的更新。意识到这可能不是最好的方法(在IE中并不总是有效，中断一个人的流程，使用屏幕阅读器重新启动程序，等等)我想知道有没有其他方法来处理这种情况。有没有可能让ajax这样的东西每隔几分钟检查一次服务器上的html文件是否较新，并让它...

问使用meta-refesh更新页面的替代方法
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