可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试):

问题:

I have a web page which allows the user to carry out various operations that in turn modify the database. Also, this web application needs to keep track of various fields in database that keep changing with time. Is refreshing the page every few seconds the best possible way to implement this? For example, if there is a long list on the page requiring scrolling, it is hard to view the list since the page keeps resetting due to the refresh. I know, there are ways to retain the position of the scroll. But, could I use something more efficient?

回答1:

Use AJAX with timer.Using this we can refresh the particular part in the page.

回答2:

Place it under head tag

<meta http-equiv="refresh" content="5">

This will refresh page every after 5 seconds.

For other option refer link text

回答3:

This task is very easy use following code in html header section

<head> <meta http-equiv="refresh" content="30" /> </head>

It will refresh your page after 30 seconds.

回答4:

Short answer is NO. YOu can use ajax to update the necessary components. This reduces the load time and keeps your page from resetting.

回答5:

I think you need something similar to Reverse AJAX now popularly known as Comet. It is server pushing the data to the client instead of browser polling the data from the server/database. http://en.wikipedia.org/wiki/Comet_(programming) has a good introduction. There are already many frameworks (e.g. DWR, ICEFaces) that support this pattern.

回答6:

AJAX with a Timer

回答7:

Without going into too much detail, in general you might want to consider generating your HTML dynamically, using Javascript, in an Ajax-style manner. It's considerably more challenging to do right, but it's the right way to go from a user-experience perspective.

Check out the Yahoo user-interface library for guidance and assistance -- it does make things a good deal easier than trying to do everything by hand.

回答8:

That sounds like a functionality that would be better suited in a Flash or Silverlight application. Using an elaborate AJAX solution might be a bit more efficient than your but the reality is that web pages make a terrible medium for live content.

回答9:

I think that the following is a good solution with the refresh command in the header.

When you call the httpSuccess function try to use this:

server.httpSuccess("text/html","Refresh: 30\r\n");

回答10:

if you want to autorefresh the whole page,use meta html tag in the page header.but it better to autoresh the specified part of the page using AJAX to avoid the elasticity of loading time