JavaScript指定字段排序方法sortFun函数

/**
 * @method sortFun
 * @param arr 要传递的排序对象数组
 * @param name 要传递的排序字段
 * @param type 要传递的排序类型 默认升序:order 降序:desc
 */
const sortFun = (arr, name, type) => {
  const compare = (prop) => {
    return function(obj1, obj2) {
      let val1 = obj1[prop];
      let val2 = obj2[prop];
      if (val1 < val2) {
        return -1;
      } else if (val1 > val2) {
        return 1;
      } else {
        return 0;
      }
    }
  }
  if (type == 'desc') {
    return arr.sort(compare(name));
  } else {
    return arr.sort(compare(name)).reverse();
  }
}

const compare = (prop) => {
  return function(obj1, obj2) {
    let val1 = obj1[prop];
    let val2 = obj2[prop];
    if (val1 < val2) {
      return -1;
    } else if (val1 > val2) {
      return 1;
    } else {
      return 0;
    }
  }
}

const arr = [
  { name: 'Tom', age: 20 },
  { name: 'Jerry', age: 18 },
  { name: 'John', age: 25 }
];
// 按 name 字段升序排序
const sortedArr1 = sortFun(arr, 'name', 'order');
console.log(sortedArr1); // [{ name: 'Jerry', age: 18 }, { name: 'John', age: 25 }, { name: 'Tom', age: 20 }]
// 按 age 字段升序排序
const sortedArr2 = sortFun(arr, 'age', 'order');
console.log(sortedArr2); // [{ name: 'Jerry', age: 18 }, { name: 'Tom', age: 20 }, { name: 'John', age: 25 }]
// 按 name 字段降序排序
const sortedArr3 = sortFun(arr, 'name', 'desc');
console.log(sortedArr3); // [{ name: 'Tom', age: 20 }, { name: 'John', age: 25 }, { name: 'Jerry', age: 18 }]