[js] 对象数组按照某个属性进行分组，

要将给定的对象数组按照 field 属性进行分组

const data = [
    {"name":"a","field":"f"},
    {"name":"b","field":"ff"},
    {"name":"v","field":"f"},
    {"name":"d","field":"ff"},
];


 // 按照field分组
groupArrayByField1(data) {
  const groupedData = data.reduce((acc, obj) => {
    const found = acc.find((item) => item.field === obj.field);
    if (found) {
      found.list.push(obj);
    } else {
      acc.push({ field: obj.field, list: [obj] });
    }
    return acc;
  }, []);
  return groupedData;
},