javascript - 过滤驾驶员 ID

Question

我想要的是，如果驱动程序位于 BusyAgent 中，那么 freedriver 的最终输出应包含来自 fetchAgent 的所有输入，除了busyAgent 中的那些。

预期输出[{"tag":"","array":[{"device_type":0,"fleet_id":23691,"eta":0}]}]

var fetchAgent = [{
    "tag": "",
    "array": [{
        "device_type": 0,
        "fleet_id": 24117,
        "eta": 0
    }]
}, {
    "tag": "",
    "array": [{
        "device_type": 0,
        "fleet_id": 23691,
        "eta": 0
    }]
}];


var busyAgent = ['24102', '24103', '24117'];

//Cannot read property 'filter' of undefined

if (Array.isArray(busyAgent) && busyAgent.length > 0) {
    freeDrivers = fetchAgent.map(e => {
        e.array = e.array.filter(a => busyAgent.indexOf("" + a.fleet_id))
        return e;
    });
} else {
    freeDrivers = fetchAgent;
}
console.log(JSON.stringify(freeDrivers));

Answer 1

反转过滤器的大小写，也许也将 map 替换为 filter ，这样就不会出现空值。否则，您将不得不进行另一次过滤。

var fetchAgent = [{
    "tag": "",
    "array": [{
        "device_type": 0,
        "fleet_id": 24117,
        "eta": 0
    }]
}, {
    "tag": "",
    "array": [{
        "device_type": 0,
        "fleet_id": 23691,
        "eta": 0
    }]
}];


var busyAgent = ['24102', '24103', '24117'];
if (Array.isArray(busyAgent) && busyAgent.length > 0) {
    freeDrivers = fetchAgent.filter(e => {
        e.array = e.array.filter(a => busyAgent.indexOf("" + a.fleet_id) < 0);
        if( e.array.length > 0) return e;
    });
} else {
    freeDrivers = fetchAgent;
}

console.log(JSON.stringify(freeDrivers));