Question

i am looking for the solution to place a span tag, after every third div tag .

HTML

<div class="grid_15">
   <div class="grid_5">
      <p>Sun</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   <div class="grid_5">
      <p>Mon</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   <div class="grid_5">
      <p>Tue</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   <div class="grid_5">
      <p>Wed</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   <div class="grid_5">
      <p>Thu</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   <div class="grid_5">
      <p>Fri</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   <div class="grid_5">
      <p>Sat</p>
      <div>
         <div class="suggest nudge-up">
            <div class="form-content-left">Morning</div>
            <div class="form-content-right">(7.00 - 8.00)</div>
            <span class="clear"></span><span class="clear"></span>
         </div>
      </div>
   </div>
</div>

Needed

<div class="grid_15">
   <div class="grid_5">
      <p>Sun</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   <div class="grid_5">
      <p>Mon</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   <div class="grid_5">
      <p>Tue</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   **<span class="clear"></span>**
   <div class="grid_5">
      <p>Wed</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   <div class="grid_5">
      <p>Thu</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   <div class="grid_5">
      <p>Fri</p>
      <div>
         <div class="suggest nudge-up"><span class="form-content-left">All Hours</span><span class="clear"></span></div>
      </div>
   </div>
   **<span class="clear"></span>**
   <div class="grid_5">
      <p>Sat</p>
      <div>
         <div class="suggest nudge-up">
            <div class="form-content-left">Morning</div>
            <div class="form-content-right">(7.00 - 8.00)</div>
            <span class="clear"></span><span class="clear"></span>
         </div>
      </div>
   </div>
</div>

As you can See, the result has, span tag (<span class="clear"></span>), after every third div completion, I tried :

jQuery

var a = $('html').find('div.grid_15 > div.grid_5');
for( var i = 0; i < a.length; i+=3 ) {
a.slice(i, i+3).append('<span class="clear"></span>');
}

But not getting the result as expected,
here is the link :

http://jsfiddle.net/pxaS4/

please help me with solution.
Thanks a lot.

Answer 1

You can use the :nth-child(3n) selector:

$('div.grid_15 > div.grid_5:nth-child(3n)').after('<span class="clear">foo</span>');

Demo: http://jsfiddle.net/pxaS4/2/