SOURCE

time()
function time() {
var timeData = ['10:00-11:00', '11:00-12:00', '12:00-13:00', '14:00-15:00'
, '16:00-17:00', '17:00-18:00', '18:00-19:00', '19:00-20:00', '21:00-22:00',
'22:00-23:00', '23:00-24:00']
getTime(timeData)
console.log( getTime(timeData))
}

function getTime(timeData) {
let newtimeDate = []
for (let i = 0; i < timeData.length; i++) {
if (i == timeData.length - 1) {
newtimeDate.push(timeData[i])
} else {

if (timeData[i + 1].slice(0, 5) === timeData[i].slice(6)) {
newtimeDate.push(`${timeData[i].slice(0, 5) + timeData[i + 1].slice(5)}`)
// console.log(newtimeDate)
if (timeData.length % 2 == 1 && i == timeData.length - 3) {
newtimeDate.push(timeData[timeData.length - 1])
i += 2
} else {
i += 1
}
} else {
newtimeDate.push(timeData[i])
}
}
}
if (newtimeDate.length >= timeData.length) {
return newtimeDate
}
return getTime(newtimeDate)
}
 







var arr = [{ time: "10:00-12:00", week: 0 }, { time: "10:00-12:00", week: 1 },
{ time: "10:00-12:00", week: 2 }, { time: "10:00-12:00", week: 3 },
{ time: "10:00-13:00", week: 4 }, { time: "10:00-13:00", week: 6 },
{ time: "10:00-13:00", week: 7 },
{ time: "11:00-14:00", week: 8 },];

 
const groupBy = (array, f) => {
    let groups = {};
    array.forEach(function (o) {
        var group = JSON.stringify(f(o));
        groups[group] = groups[group] || [];
        groups[group].push(o);
    });
    return Object.keys(groups).map(function (group) {
        return groups[group];
    });
};

const arrayGroupBy = (list, groupId) => {
    let sorted = groupBy(list, function (item) {
        return [item[groupId]];
    });
    return sorted;
};

let groupTime = arrayGroupBy(arr, 'time');


// console.log(arrayGroupBy(arr,'time'))
groupTime.forEach((item) => {
    // console.log(item)
    item.forEach((e) => {
        // console.log(e.time)
    })
})


combinedWeek()
// 合并周几
function combinedWeek() {
    const statusEnum = {
        1: "周一",
        2: "周二",
        3: "周三",
        4: "周四",
        5: "周五",
        6: "周六",
        7: "周日",
    };
    let workdayList = [
        //res的数据是这种结构
        // {
        //     workday: "1,2,3",
        //     start_time: "9:00",
        //     end_time: "18:00",
        // },
        // {
        //     workday: "3,4",
        //     start_time: "9:00",
        //     end_time: "18:00",
        // },

        {
            time: "09:00-12:00",
            workday: "1,2,3",
        },
        {
            time: "08:00-12:00",
            workday: "4,5",
        },
        {
            time: "18:00-20:00",
            workday: "1,4,5",
        }
    ];
    workdayList.forEach((item1) => {
        var days = item1.workday.split(",");
        for (let index = 0; index < days.length; index++) {
            const dayItem = days[index];
            // 0代表周日需要处理一下
            if (dayItem === "0") {
                days[index] = "7";
            }
        }

        // 对天数进行排序
        days = days.sort();
        const start = [];
        const end = [];
        var reload = true;
        for (let index = 0; index < days.length; index++) {
            const element = days[index];
            const element1 = days[index + 1];
            if (reload) {
                start.push(element);
            }
            if (element1 - element === 1) {
                reload = false;
                continue;
            } else {
                reload = true;
                end.push(element);
            }
        }

        var resultMsg = [];

        for (let index1 = 0; index1 < start.length; index1++) {
            const startItem = start[index1];
            const endItem = end[index1];
            if (endItem - startItem === 0) {

                resultMsg.push(statusEnum[startItem]);
            } else {
                // if(endItem - startItem== 1){
                //  resultMsg.push(
                //     statusEnum[startItem] + "、" + statusEnum[endItem]
                // );
                 
                // }else{
                //     resultMsg.push(
                //     statusEnum[startItem] + "至" + statusEnum[endItem]
                // ); 
                // }
                 resultMsg.push(
                    statusEnum[startItem] + "至" + statusEnum[endItem])
            }
        }
        console.log(resultMsg);
        item1.resultMsg =
            resultMsg.join("、") +
            " " +
            item1.time
        // +
        // "-" +
        // item1.end_time;

        //   console.log(item1.resultMsg)
    });
}