jQuery addClass example
Change class name on click in jQuery
HTML
<div class="dynamicheight"></div>
<div class="dynamicheight"></div>
<div class="dynamicheight"></div>
<div class="dynamicheight"></div>
CSS
.dynamicheight
{
width: 22%;
/* Just for looks: */
background-color: cornflowerblue;
margin: 25px;
float:left;
}
JavaScript
$(function() {
var div = $('.dynamicheight');
var width = div.width();
div.css('height', width);
});