I want to wrap all the nodes within the #slidesContainer div with JavaScript. I know it is easily done in jQuery, but I am interested in knowing how to do it with pure JS. Here is the code: <div id="slidesContainer"> <div class="slide">slide 1</div> <div class="slide">slide 2</div> <div class="slide">slide 3</div> <div class="slide">slide 4</div> </div> I want to wrap the divs with a class of "sli