服务器脚本与Javascript的两种交互方式(以php为例)
引用:http://www.knowsky.com/1014.html
在网页制作过程中怎样在不刷新页面的情况下使前台页面和后台CGI页面保持交互一直是个问题。这里介绍两个方法。
方法一:通过Cookie交互。
一共是三个文件,分别为:index.htm,action.php,main.htm
原理为前台页面main.htm和后台action.php通过页面框架 index.htm组织起来,将action.php的页面宽度设为0,这样并不影响显示。action.php将信息放入cookie中,main.htm通过读取 cookie来实现交互。在main.htm中也可以通过重新读取action.php 来实现控制后台CGI程序。
index.htm
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<html>
<head>
<title>Test</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<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>本页使用页面框架,但是您的浏览器不支持。</p>
</body>
</noframes>
</html>
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action.php
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<?php
srand((double)microtime()*1000000);
$result=rand(0,100);
setcookie("action",$result,time()+900,"/");
?>
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main.htm
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<html>
<head>
<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>
</head>
<body bgcolor="#FFFFFF">
<form name="test" >
当前参数为<input type="text" name="current_cookie" size="80" maxlength="1000">
</form>
<script language="javascript">
setInterval("get_cookie()",200);
</script>
<br>
<a href="action.php" target="leftFrame">重新读取Cookie</a>
</body>
</html>
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方法二:直接通过parent.*.*来实现交互。
一共是三个文件,分别为:index.htm,action.php,main.htm,其中index.htm和前面的一样。
原理为通过parent.rightFrame.test.current_cookie.value直接传递信息。
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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<html>
<head>
<title>Test</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body bgcolor="#FFFFFF">
<form name="test" >
当前参数为<input type="text" name="current_cookie" size="80" maxlength="1000">
</form>
<br>
<a href="action.php" target="leftFrame">重新读取Cookie</a>
</body>
</html>
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