js循环获取某字符串的优雅写法

Question

比如下面遮到代码，有什么更优的写法吗

                let expertList = this.info.expert_list || [];
                if (!expertList.length) {
                    return '-';
                }
                let expertStr = '';
                for (let i = 0; i < expertList.length; i++) {
                    expertStr += expertList[i].name;
                    if (i < expertList.length - 1) {
                        expertStr += '、';
                    }
                }
                return expertStr;

Answer 1

let expertList = this.info.expert_list || [];
return expertList.map(item => item.name).join('、') || '-'

Answer 2

return Array.from(this.info.expert_list || []).map(e => e.name).join('、') || '-';