Function makeMap

test/angular/1.5/angular.js:797–803

* @param str 'key1,key2,...' * @returns {object} in the form of {key1:true, key2:true, ...}

(str)

 * @returns {object} in the form of {key1:true, key2:true, ...}
 */
function makeMap(str) {
  var obj = {}, items = str.split(','), i;
  for (i = 0; i < items.length; i++) {
    obj[items[i]] = true;
  }
  return obj;
}


function nodeName_(element) {