不容易啊，终于把第二题搞出来了。有没有其他更好的思路啊？ var find = function(origin) {     //your code are here...     return {         where: function(findObj) { //条件对象             const results = [];             let key = Object.keys(findObj);             let rexp = findObj[key];             origin.forEach((item, index) => {                 if (rexp.test(item[key])) {                     results.push(item);                 }             });             return {                 orderBy: function(key, order) {                     results.sort((item1, item2) => {                         if (order == 'desc&(8707)#39;) {                             return item2[key] - item1[key];                         } else {                             return item1[key] - item2[key];                         }                     })                     return results;                 }             }         }     } }