How to reload an IFrame every x seconds?
Was wonde开发者_如何学JAVAring how I can reload an iframe every x seconds, perferably not using javascript.
Thanks.
With a Refresh: x HTTP header or with an HTML element in the document loaded into the iframe:
<meta http-equiv="refresh" content="x" />
This element should be placed inside of the document's <head/> element.
If you do not have control over the document loaded into the frame or the server that it is served from, you have two options:
- JavaScript.
- Write another HTML page with the above
<meta/>element and include an iframe in that page targeting the other page. So you will have an iframe inside an iframe: outer document -> iframe(inner document with meta-refresh) -> iframe(original iframe target)
EDIT: Regarding option #2, here's a decent generic iframe in PHP that gives some flexibility in terms of refresh time and style. Just call it with something like:
http://www.mydomain.com/genericIframe.php?url=http://my.domain.com/mypage.htm&refreshTime=60&style=putYourStyleAttribHere
Here's the PHP/HTML:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Generic Iframe</title>
<meta http-equiv="refresh" content="<?php print $_REQUEST['refreshTime']; ?>" />
</head>
<body>
<iframe src="<?php print $_REQUEST['url']; ?>" style="<?php print $_REQUEST['style']; ?>"></iframe>
</body>
</html>
加载中,请稍侯......
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