fontconverter/filereader.js
function addClass(el, name) {
        if (!hasClass(el, name)) {
          el.className = el.className ? [el.className, name].join(' ') : name;
        }
    }
function addClass(el, name) {
        if (!hasClass(el, name)) {
          el.className = el.className ? [el.className, name].join(' ') : name;
        }
    }
addClass: add the css class for the element.