如何从 json 输出计算可用时间？

Question

我在对象中有这种带有开始和结束时间属性的 json。var meetings = [  {    id: '1',    start_time: "2020-11-15T08:30:00+00:00",    end_time: "2020-11-15T14:15:00+00:00"  },  {    id: '2',    start_time: "2020-11-15T19:30:00+00:00",    end_time: "2020-11-15T20:30:00+00:00"  },];所以两次会议第一个：08:30 - 14:15 第二个：19:30-20:30有 24 小时的可用工作时间，因此：start_time = '00:00:00';end_time = '23:59:00';但我需要的格式是var start_time = '2020-11-15T00:00:00+00:00';var end_time = '2020-11-15T23:59:00+00:00';我如何根据已经召开的会议计算可用时间？因此，因为第一次会议是从 08:30 - 14:15 和第二个会议是 19:30-20:30，所以我需要具有以下结果和可用时间的 json：[  {    start_time:'2020-11-15T00:00:00+00:00',    end_time:'2020-11-15T08:30:00+00:00'  },  {    start_time:'2020-11-15T14:15:00+00:00',    end_time:'2020-11-15T19:30:00+00:00'  },  {    start_time:'2020-11-15T20:30:00+00:00',    end_time:'2020-11-15T23:59:00+00:00'  }]

Answer 1

你可以这样做：

var meetings = [

  {

    id: '1',

    start_time: "2020-11-15T08:30:00+00:00",

    end_time: "2020-11-15T14:15:00+00:00"

  },

  {

    id: '2',

    start_time: "2020-11-15T19:30:00+00:00",

    end_time: "2020-11-15T20:30:00+00:00"

  },

  {

    id: '3',

    start_time: "2020-11-15T20:50:00+00:00",

    end_time: "2020-11-15T21:30:00+00:00"

  },

  {

    id: '4',

    start_time: "2020-11-15T22:30:00+00:00",

    end_time: "2020-11-15T22:40:00+00:00"

  },

];

var startTime = '2020-11-15T00:00:00+00:00';

var endTime = '2020-11-15T23:59:00+00:00';

let availableHours = [];

for(let index in meetings){

    if(index != meetings.length - 1){

        index == 0 ? availableHours.push({start_time: startTime, end_time: meetings[index]['start_time'] }) : 0;

        availableHours.push({start_time: meetings[index].end_time, end_time: meetings[+index + 1]['start_time'] });

    } else {

        availableHours.push({start_time: meetings[index].end_time, end_time: endTime })

    }    

}

console.log(meetings)

console.log(availableHours)