Question

PHP中location.href用法?

<?php
/*
* PHP100Job v1.0
* Programmer : Msn/QQ haowubai@hotmail.com (925939)
* www.php100.com Develop a project PHP - MySQL - Apache
* Window 2003 - Preferences - PHPeclipse - PHP - Code Templates
*/
include("conn.php");

if($_GET[out]){
setcookie("cookie", "out");
echo "<script language=\"javascript\">location.href='login.php';</script>";
}

if($_POST[id]=='admin'){
$pw=md5($_POST[pw]);
if($pw=='e1bfd762321e409cee4ac0b6e841963c'){
setcookie("cookie", "ok");
echo "<script language=\"javascript\">location.href='login.php';</script>";
}
}
include("head.php");
if($_COOKIE['cookie']!='ok'){
?>

<SCRIPT language=javascript>
function Checklogin()
{
if (myform.id.value=="")
{
alert("请填写登录名");
myform.id.focus();
return false;
}
if (myform.pw.value=="")
{
alert("密码不能为空");
myform.pw.focus();
return false;
}
}
</SCRIPT>

<form action="" method="post" name="myform" onsubmit="return Checklogin();">
ID：<input type="text" name="id" /><br>
PW：<input type="password" name="pw" /> <input type="submit" name="submit" value="登陆"/>
</form>
<?
}else{
?>
<a href='?out=login'>退出</a>
<?
}
?>
----------------------------------
请高手解释下
if($_GET[out]){
setcookie("cookie", "out");
echo "<script language=\"javascript\">location.href='login.php';</script>";
}
----------------------------------------------------
这跟后面的<a href='?out=login'>退出</a>怎么理解?

详细点 谢谢

Answer 1

我没仔细看你的内容,太多,我大致说一下:
1.location.href是 JavaScript中window 对象的location对象的 href属性,通过设置location.href可以将页面跳转到指定地址!
2<a href='?out=login'>退出</a>的意思是点击此链接,页面会再次跳转到当前页面,不同的是,跳转过程中传递了一个参数out.页面可以通过传递过来的参数进行相应的显示!