Map-Reduce a collection of values into a list

gistfile1.js

      [1, 2, 3]
        .map(function (num) {
          var listItem = document.createElement('li');
          listItem.textContent = num;
          return listItem;
        })
        .reduce(function (acc, cur) {
          acc.appendChild(cur);
          return acc;
        }, document.createElement('ul'));