数组按照元素排序

var newList = [{"autonym_time":"2020/08/12 10:04:41","autonym_time_day":"2020/08/12","doctor_id":"4296195","avatar":"http://test.u.miaoshoucdn.com/avatar/004/29/61/004296195_mid.jpg","realname":"dsffd","hospital":"","ks_text":"","title":"","mobile":"18801455250","initials":"L"},{"autonym_time":"2021/01/20 10:55:39","autonym_time_day":"2021/01/20","doctor_id":"4297682","avatar":"http://test.u.miaoshoucdn.com/avatar/004/29/76/004297682_mid.jpg","realname":"dfdfw","hospital":"","ks_text":"","title":"","mobile":"18210031244","initials":"T"},{"autonym_time":"2020/10/21 17:37:07","autonym_time_day":"2020/10/21","doctor_id":"4297006","avatar":"http://test.u.miaoshoucdn.com/avatar/004/29/70/004297006_mid.jpg","realname":"dfdfdf","hospital":"","ks_text":"","title":"","mobile":"13552999198","initials":"Y"},{"autonym_time":"2021/03/26 18:00:59","autonym_time_day":"2021/03/26","doctor_id":"4302347","avatar":"http://test.u.miaoshoucdn.com/avatar/004/30/23/004302347_mid.jpg","realname":"丁步达","hospital":"中国人民解放军总医院","ks_text":"内科普通内科","title":"主任医师","mobile":"15733274656","initials":"Y"}]

  newList = newList.sort((s, t) => {
        var a = s.initials.toLowerCase();
        var b = t.initials.toLowerCase();
        if (a < b) return -1;
        if (a > b) return 1;
        return 0;
      });