How to make the front page of the page and
Background CGI pages remain interactive for a long time. Here are two I make in practice
The method used.
Method One: Interact with cookies. Altogether there are three files, respectively:
Index.htm,action.php,main.htm
Principle for foreground page main.htm and backstage action.php through page frame
index.htm, the action.php page width is set to 0, which does not
Impact display. Action.php the information into a cookie, main.htm by reading
Cookies to implement the interaction. In Main.htm, you can also read action.php by re-read
To implement the control of the background CGI program.
Index.htm
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<title>Test</title>
<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 ">
<frameset framespacing= "0" border= "false" frameborder= "0" cols= "0,*" >
<frame name= "Leftframe" scrolling= "no" noresize src= "action.php" >
<frame name= "Rightframe" scrolling= "Auto" src= "main.htm" >
</frameset><noframes>
<body bgcolor= "#FFFFFF" >
<p> page frames are used on this page, but your browser is not supported. </p>
</body>
</noframes>
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action.php
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?
Srand (Double) microtime () *1000000);
$result =rand (0,100);
Setcookie ("Action", $result, Time () +900, "/");
?>
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Main.htm
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<title>Test</title>
<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 ">
<script language= "JavaScript" >
function Get_cookie ()
{
Document.test.current_cookie.value=document.cookie;
}
</script>
<body bgcolor= "#FFFFFF" >
<form name= "Test" >
The current parameter is <input type= "text" name= "Current_cookie" size= "M" maxlength= "1000" >
</form>
<script language= "JavaScript" >
SetInterval ("Get_cookie ()", 200);
</script>
<br>
<a href= "action.php" target= "Leftframe" > re-read cookie</a>
</body>
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Method Two: Directly through Parent.*.* to realize the interaction. Altogether there are three files, respectively:
Index.htm,action.php,main.htm, where the index.htm is the same as the front.
Principle for direct transmission through Parent.rightFrame.test.current_cookie.value
Information.
action.php
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?
Srand (Double) microtime () *1000000);
$result =rand (0,100);
?>
<script language= "JavaScript" >
Parent.rightframe.test.current_cookie.value= ". echo $result?> ";
</script>
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Main.htm
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<title>Test</title>
<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 ">
<body bgcolor= "#FFFFFF" >
<form name= "Test" >
The current parameter is <input type= "text" name= "Current_cookie" size= "M" maxlength= "1000" >
</form>
<br>
<a href= "action.php" target= "Leftframe" > re-read cookie</a>
</body>
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