Jquery添加li类活动

Question

Need add class to li

admin.tpl:

<ul class="nav nav-tabs">
<li><a href="admin.php">{"_MENUINFO"|lang}</a></li>
<li><a href="admin.php?site=ban_add">{"_ADDBAN"|lang}</a></li>
<li><a href="admin.php?site=ban_add_online">{"_ADDBANONLINE"|lang}</a></li>
</ul>

if example.com/admin.php need

<li class="active"><a href="admin.php">{"_MENUINFO"|lang}</a></li>
<li><a href="admin.php?site=ban_add">{"_ADDBAN"|lang}</a></li>
<li><a href="admin.php?site=ban_add_online">{"_ADDBANONLINE"|lang}</a></li>

example.com/admin.php?site=ban_add

<li><a href="admin.php">{"_MENUINFO"|lang}</a></li>
<li class="active"><a href="admin.php?site=ban_add">{"_ADDBAN"|lang}</a></li>
<li><a href="admin.php?site=ban_add_online">{"_ADDBANONLINE"|lang}</a></li>

end etc.. Please help!

Does not work

<li class="<?php if ($page=="admin.php") echo "active"?>">

Answer 1

try this JQUERY

first give the id to your ul

<ul class="nav nav-tabs" id="nav_tabs">

then use jquery

$(document).ready(function(){
    $('ul#nav_tabs li a').each(function(index, element) {
        var li = $(element).attr('href');
        $(element).parent().removeClass("active");   
       var filename = window.location.href.substr(window.location.href.lastIndexOf("/")+1);

        if(filename==li)
        {
                $(element).parent().addClass("active"); 
        }

    });
});

also you can use PHP as

<?php
$my_url = $_SERVER['REQUEST_URI'];
$page = substr($my_url, strrpos($my_url, '/') + 1)
?>

<ul class="nav nav-tabs" id="nav_tabs">
    <li <?php if($page=="admin.php") echo 'class="active"'; ?>><a href="admin.php">{"_MENUINFO"|lang}</a></li>
    <li <?php if($page=="admin.php?site=ban_add") echo 'class="active"'; ?>><a href="admin.php?site=ban_add">{"_ADDBAN"|lang}</a></li>
    <li <?php if($page=="admin.php?site=ban_add_online") echo 'class="active"'; ?>><a href="admin.php?site=ban_add_online">{"_ADDBANONLINE"|lang}</a></li>
</ul>