let map = {
hot: {
title: ‘热门’,
item: []
},
alphabet: {}
};
for (let i = 0; i < 26; i++) {
const en = String.fromCharCode(65 + i);
map.alphabet[en] = [];
for (let j = 0,length = list.length; j < length; j++) {
const item = list[j];

        if (j <= 9 && i === 0) {
          map['hot'].item.push({
            id: item.Fsinger_idl,
            name: item.Fsinger_name,
            icon: `https//y.gtimg.cn/music/photo_new/T001R150x150M000${item.Fsinger_mid}.jpg?max_age=2592000`
          });
        }

        if (en === item.Findex) {
          map.alphabet[en].push({
            id: item.Fsinger_id,
            name: item.Fsinger_name,
            icon: `https//y.gtimg.cn/music/photo_new/T001R150x150M000${item.Fsinger_mid}.jpg?max_age=2592000`
          });
        }
      }
    }
    console.log(map);

我是这样写的，我感觉这样得到的数据也便于理解一点 不会那么麻烦