Function manipulations

test/e2e/mutationobserver/mutationobserver_spec.js:250–288

()

        parentElement.innerHTML = '';

        var manipulations = function() {
          var startTime, endTime;
          var result = {};
          var numberOfChildElements = 100;
          var numberOfSubChildElements = 100;

          startTime = new Date();
          for (var i = 0; i < numberOfChildElements; i++) {
            var childElement = document.createElement('div');
            childElement.id = childElement.innerHTML = 'child_' + i;
            parentElement.appendChild(childElement);

            for (var x = 0; x < numberOfSubChildElements; x++) {
              var subChildElement = document.createElement('div');
              subChildElement.id = subChildElement.innerHTML = 'child_' + i + '_' + x;
              childElement.appendChild(subChildElement);
            }
          }

          endTime = new Date();
          result.adding = (endTime - startTime) + ' ms';

          startTime = new Date();

          for (var i = 0; i < numberOfChildElements; i++) {
            var childElement = document.getElementById('child_' + i);
            childElement.setAttribute('custom', i.toString());

            for (var x = 0; x < numberOfSubChildElements; x++) {
              var subChildElement = document.getElementById('child_' + i + '_' + x);
              subChildElement.setAttribute('custom', x.toString());
              subChildElement.className="aclass";
            }
          }

          endTime = new Date();
          result.modifying = (endTime - startTime) + ' ms';
          return result;
        };


        var info = {