SOURCE

let obj = {
    "email": {
        "col": "j",
        "title": "邮箱",
        "width": 13
    },
    "phone": {
        "col": "i",
        "title": "联系电话",
        "width": 13
    },
    "reply": {
        "col": "l",
        "title": "回复意见",
        "width": 20
    },
    "handle": {
        "col": "g",
        "title": "处理方式",
        "width": 10
    },
    "number": {
        "col": "c",
        "title": "投诉单号",
        "width": 22
    },
    "status": {
        "col": "n",
        "title": "是否完成"
    },
    "content": {
        "col": "k",
        "title": "投诉内容",
        "width": 50
    },
    "_NUMBER_": {
        "col": "a",
        "title": "序号"
    },
    "username": {
        "col": "d",
        "title": "用户账号",
        "width": 13
    },
    "reply_time": {
        "col": "m",
        "title": "回复时间"
    },
    "create_time": {
        "col": "b",
        "title": "创建时间",
        "width": 18
    },
    "order_number": {
        "col": "e",
        "title": "订单号码",
        "width": 22
    },"problem": {
        "col": "e",
        "title": "问题类型",
        "width": 8
    },
    "refund_amount": {
        "col": "h",
        "title": "退款总金额"
    },
    "detail.goods_qty": {
        "col": "s",
        "title": "购买数量"
    },
    "detail.goods_name": {
        "col": "o",
        "title": "商品名称",
        "width": 20
    },
    "detail.refund_qty": {
        "col": "u",
        "title": "退款数量"
    },
    "detail.goods_model": {
        "col": "p",
        "title": "规格型号"
    },
    "detail.goods_price": {
        "col": "q",
        "title": "购买单价"
    },
    "detail.payable_price": {
        "col": "r",
        "title": "实付单价"
    },
    "detail.refund_amount": {
        "col": "v",
        "title": "退款金额"
    },
    "detail.payable_amount": {
        "col": "t",
        "title": "实付金额"
    }
}
const xArr = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'];
let arr = [], obj1 = {}
for (let i in obj) {
    let item = obj[i]
    item.i = i
    arr.push(item)
}
// console.log(arr);
console.log(
    arr.sort((a, b) => {
        return a.col.localeCompare(b.col);
    }).map((item, i) => {
        item.col = xArr[i]
        // delete item.i
        let obj = {
            ...item
        }
        delete obj.i
        obj1[item.i] = obj
        return item.title
    }))
console.log(obj1)