Twitter Bootstrap add active class to li

Question

Using twitter bootstrap, and I need to initiate active class to the li portion of the main nav. Automagically. We use php not ruby.

Sample nav :

<ul class="nav">     <li><a href="/">Home</a></li>     <li><a href="/forums">Forums</a></li>     <li><a href="/blog">Blog</a></li>     <li><a href="/faqs.php">FAQ's</a></li>     <li><a href="/item.php">Item</a></li>     <li><a href="/create.php">Create</a></li> </ul> 

Bootstrap code is as follows:

<li class="active"><a href="/">Home</a></li> 

So just need to figure out how to append the class active to the current page. Have looked thru nearly every answer on Stack, with no real joy.

I had played with this:

/*menu handler*/ $(function(){     var url = window.location.pathname;       var activePage = url.substring(url.lastIndexOf('/')+1);     $('.nav li a').each(function(){           var currentPage = this.href.substring(this.href.lastIndexOf('/')+1);          if (activePage == currentPage) {             $(this).parent().addClass('active');          }      }); }) 

But no joy.

Answer 1

For Bootstrap 3:

var url = window.location; // Will only work if string in href matches with location $('ul.nav a[href="'+ url +'"]').parent().addClass('active');  // Will also work for relative and absolute hrefs $('ul.nav a').filter(function() {     return this.href == url; }).parent().addClass('active'); 

Update

For Bootstrap 4:

var url = window.location; // Will only work if string in href matches with location $('ul.navbar-nav a[href="'+ url +'"]').parent().addClass('active');  // Will also work for relative and absolute hrefs $('ul.navbar-nav a').filter(function() {     return this.href == url; }).parent().addClass('active'); 

Answer 2

We managed to fix in the end:

/*menu handler*/ $(function(){   function stripTrailingSlash(str) {     if(str.substr(-1) == '/') {       return str.substr(0, str.length - 1);     }     return str;   }    var url = window.location.pathname;     var activePage = stripTrailingSlash(url);    $('.nav li a').each(function(){       var currentPage = stripTrailingSlash($(this).attr('href'));      if (activePage == currentPage) {       $(this).parent().addClass('active');      }    }); });