获取javascript对象中共享同一同级的所有值_Javascript_Json_Api_Loops

获取javascript对象中共享同一同级的所有值

javascript json api loops

获取javascript对象中共享同一同级的所有值,javascript,json,api,loops,Javascript,Json,Api,Loops,我正试图从这个从API提取的json文件中获取与特定的dayID匹配的所有startTimes。因此，结果将是从20191106开始的8709009309609901050，然后是从20191107开始的startTime组，等等。我假设了某种循环，但很难找到唯一标识符 { "Availability": [ { "dayID": "20191106", "routeID": "313", "startTim

我正试图从这个从API提取的json文件中获取与特定的dayID匹配的所有startTimes。因此，结果将是从20191106开始的8709009309609901050，然后是从20191107开始的startTime组，等等。我假设了某种循环，但很难找到唯一标识符

{
"Availability": [
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "870"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "900"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "930"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "960"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "990"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "1020"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "1050"
        },
        {
            "dayID": "20191107",
            "routeID": "313",
            "startTime": "360"
        },
        {
            "dayID": "20191107",
            "routeID": "313",
            "startTime": "390"
        },
        {
            "dayID": "20191107",
            "routeID": "313",
            "startTime": "420"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "360"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "390"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "420"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "450"
        }
    ]
}

您可以使用.filter和.map

const jsonData = {
"Availability": [
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "870"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "900"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "930"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "960"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "990"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "1020"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "1050"
        },
        {
            "dayID": "20191107",
            "routeID": "313",
            "startTime": "360"
        },
        {
            "dayID": "20191107",
            "routeID": "313",
            "startTime": "390"
        },
        {
            "dayID": "20191107",
            "routeID": "313",
            "startTime": "420"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "360"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "390"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "420"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "450"
        }
    ]
}
const dayID = "20191106"
const startTimes = jsonData.Availability.filter(a => a.dayID === dayID).map(a => a.startTime)
console.log(startTimes)

下面是一个执行代码的JSFIDLE

您可以使用.filter和.map

const jsonData = {
"Availability": [
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "870"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "900"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "930"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "960"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "990"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "1020"
        },
        {
            "dayID": "20191106",
            "routeID": "313",
            "startTime": "1050"
        },
        {
            "dayID": "20191107",
            "routeID": "313",
            "startTime": "360"
        },
        {
            "dayID": "20191107",
            "routeID": "313",
            "startTime": "390"
        },
        {
            "dayID": "20191107",
            "routeID": "313",
            "startTime": "420"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "360"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "390"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "420"
        },
        {
            "dayID": "20191108",
            "routeID": "313",
            "startTime": "450"
        }
    ]
}
const dayID = "20191106"
const startTimes = jsonData.Availability.filter(a => a.dayID === dayID).map(a => a.startTime)
console.log(startTimes)

下面是一个执行代码的JSFIDLE

您可以使用reducer按dayID进行分组：

const数据={
“可用性”：[
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“870”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“900”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“930”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“960”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“990”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“1020”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“1050”
},
{
“dayID”：“20191107”，
“routeID”：“313”，
“开始时间”：“360”
},
{
“dayID”：“20191107”，
“routeID”：“313”，
“开始时间”：“390”
},
{
“dayID”：“20191107”，
“routeID”：“313”，
“开始时间”：“420”
},
{
“dayID”：“20191108”，
“routeID”：“313”，
“开始时间”：“360”
},
{
“dayID”：“20191108”，
“routeID”：“313”，
“开始时间”：“390”
},
{
“dayID”：“20191108”，
“routeID”：“313”，
“开始时间”：“420”
},
{
“dayID”：“20191108”，
“routeID”：“313”，
“开始时间”：“450”
}
]
}
console.log（数据.可用性.reduce）（acc，curr）=>{
if（根据[当前日期ID]）{
acc[curr.dayID].push（curr.startTime）；
}否则{
acc[当前日期]=[当前开始时间]；
}
返回acc；
}，{}））

您可以使用reducer按dayID进行分组：

const数据={
“可用性”：[
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“870”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“900”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“930”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“960”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“990”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“1020”
},
{
“dayID”：“20191106”，
“routeID”：“313”，
“开始时间”：“1050”
},
{
“dayID”：“20191107”，
“routeID”：“313”，
“开始时间”：“360”
},
{
“dayID”：“20191107”，
“routeID”：“313”，
“开始时间”：“390”
},
{
“dayID”：“20191107”，
“routeID”：“313”，
“开始时间”：“420”
},
{
“dayID”：“20191108”，
“routeID”：“313”，
“开始时间”：“360”
},
{
“dayID”：“20191108”，
“routeID”：“313”，
“开始时间”：“390”
},
{
“dayID”：“20191108”，
“routeID”：“313”，
“开始时间”：“420”
},
{
“dayID”：“20191108”，
“routeID”：“313”，
“开始时间”：“450”
}
]
}
console.log（数据.可用性.reduce）（acc，curr）=>{
if（根据[当前日期ID]）{
acc[curr.dayID].push（curr.startTime）；
}否则{
acc[当前日期]=[当前开始时间]；
}
返回acc；
}，{}））

嗯，

dayID

不是唯一标识符吗？嗯，

dayID

不是唯一标识符吗？