jquery - Alternately reorder nodeList based on class -

i have nodelist set following:

<div id="container">   <div class="class-a"></div>   <div class="class-a"></div>   <div class="class-a"></div>   <div class="class-b"></div>   <div class="class-b"></div>   <div class="class-b"></div> </div> 

i'm trying reorder div inside #container such output alternating class names:

<div id="container">   <div class="class-a"></div>   <div class="class-b"></div>   <div class="class-a"></div>   <div class="class-b"></div>   <div class="class-a"></div>   <div class="class-b"></div> </div> 

what best approach handle issue? although in example there equal class-a , class-b items, there number or none of either. long there either of 2 alternate.

here's how although there may easier way.

  var divs = $("#container > div"); // divs in #container   var length = divs.length; // length once , reuse    (var = 0; < length; i++) {     var currentclass = (i % 2 === 0) ? "class-a" : "class-b"; // class-a evens. class-b odds      if (!$(divs[i]).hasclass(currentclass)) { // if not currentclass       (var j = + 1; j < length; j++) { // loop through remaining divs         if ($(divs[j]).hasclass(currentclass)) { // find next div currentclass           // move next element currentclass index j index           var element = divs[j];           divs.splice(j, 1);           divs.splice(i, 0, element);           break; // break inner loop         }       }     }   }    $("#container").empty().append(divs); 

jsfiddle