商品价格区间函数

function getPriceRange(Arr) {
      var priceArr = [], minPrice, maxPrice;
      if (Arr.length == 1) {return '¥' + Arr[0].price.toFixed(2);} 
      for (var i = 0; i < Arr.length; i++) {
        priceArr.push(Arr[i].price);
      }
      maxPrice =  Math.max.apply(Math, priceArr);
      minPrice =  Math.min.apply(Math, priceArr);
      maxPrice = maxPrice.toFixed(2);
      minPrice = minPrice.toFixed(2);
      if (maxPrice != minPrice) {
        return '&yen;' + minPrice + '~' + maxPrice;
      } else {
        return '&yen;' + minPrice;
      }
    }