数组排序

function compare(propertyName) {
  return function(object1, object2) {
    console.log(object1);
    var value1 = object1[propertyName];
    var value2 = object2[propertyName];
    if (value2 < value1) {
      return 1;
    } else if (value2 > value1) {
      return -1;
    } else {
      return 0;
    }
  }
}
let brandList = [
  {brandName: 'CBC'},
  {brandName: 'BCA'},
  {brandName: 'ABC'},
  {brandName: 'ABB'}];
console.log(brandList.sort(compare('brandName')));