Javascript 如何正确过滤yandex地图上的数据？
我正在尝试过滤yandex地图上的数据。 如果基站有多个频带（2G、3G和4G），则如果至少有一个频带在滤波器中，则应将其包含在结果中 如何正确过滤yandex地图上的数据？ 我有listBoxControl和listBoxItems=['2G'，'3G'，'4G'] 我的筛选函数如下所示：Javascript 如何正确过滤yandex地图上的数据？,javascript,yandex,yandex-maps,Javascript,Yandex,Yandex Maps,我正在尝试过滤yandex地图上的数据。 如果基站有多个频带（2G、3G和4G），则如果至少有一个频带在滤波器中，则应将其包含在结果中 如何正确过滤yandex地图上的数据？ 我有listBoxControl和listBoxItems=['2G'，'3G'，'4G'] 我的筛选函数如下所示： function getFilterFunction(categories){ return function(obj){ let bsBands = obj.has_bands; /
function getFilterFunction(categories){
return function(obj){
let bsBands = obj.has_bands;
/* How correct filter data? */
return categories['2G'] && categories['3G'] && categories['4G'];
}
}
{
"count": 4,
"next": null,
"previous": null,
"type": "FeatureCollection",
"features": [
{
"id": 1,
"region_prefix": "97",
"cell_site_number": 1,
"description": "",
"address": "",
"commissioning": "",
"bs_id": "",
"height_asl": 0,
"bands": [
{
"name": "2G",
"frequency": "900"
},
{
"name": "2G",
"frequency": "1800"
},
{
"name": "3G",
"frequency": "2100"
},
{
"name": "4G",
"frequency": "1800"
},
{
"name": "4G TDD",
"frequency": "2600"
}
],
"status": true,
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [55.755815, 37.613]
},
"properties": {
"balloonContentHeader": "balloonContentHeader",
"balloonContentBody": "balloonContentBody",
"balloonContentFooter": "balloonContentFooter",
"clusterCaption": "clusterCaption",
"hintContent": "hintContent",
"iconCaption": "2G 3G 4G"
},
"has_bands": [
"3G",
"2G",
"4G"
]
},
{
"id": 2,
"region_prefix": "97",
"cell_site_number": 2,
"description": "",
"address": "",
"commissioning": "",
"bs_id": "",
"height_asl": 0,
"bands": [
{
"name": "2G",
"frequency": "900"
},
{
"name": "2G",
"frequency": "1800"
},
{
"name": "3G",
"frequency": "2100"
},
{
"name": "4G",
"frequency": "1800"
},
{
"name": "4G TDD",
"frequency": "2600"
}
],
"status": true,
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [55.759, 37.613]
},
"properties": {
"balloonContentHeader": "balloonContentHeader",
"balloonContentBody": "balloonContentBody",
"balloonContentFooter": "balloonContentFooter",
"clusterCaption": "clusterCaption",
"hintContent": "hintContent",
"iconCaption": "2G 3G 4G"
},
"has_bands": [
"3G",
"2G",
"4G"
]
},
{
"id": 3,
"region_prefix": "97",
"cell_site_number": 3,
"description": "",
"address": "",
"commissioning": "",
"bs_id": "",
"height_asl": 0,
"bands": [
{
"name": "3G",
"frequency": "2100"
}
],
"status": true,
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [55.7204, 37.6167]
},
"properties": {
"balloonContentHeader": "balloonContentHeader",
"balloonContentBody": "balloonContentBody",
"balloonContentFooter": "balloonContentFooter",
"clusterCaption": "clusterCaption",
"hintContent": "hintContent",
"iconCaption": "3G"
},
"has_bands": [
"3G",
]
},
{
"id": 4,
"region_prefix": "97",
"cell_site_number": 4,
"description": "",
"address": "",
"commissioning": "",
"bs_id": "",
"height_asl": 0,
"bands": [
{
"name": "4G",
"frequency": "1800"
},
{
"name": "4G TDD",
"frequency": "2600"
}
],
"status": true,
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [55.7704, 37.6119]
},
"properties": {
"balloonContentHeader": "balloonContentHeader",
"balloonContentBody": "balloonContentBody",
"balloonContentFooter": "balloonContentFooter",
"clusterCaption": "clusterCaption",
"hintContent": "hintContent",
"iconCaption": "4G"
},
"has_bands": [
"4G"
]
}]}
function getFilterFunction(categories){
return function(obj){
let bsBands = obj.has_bands;
/* How correct filter data? */
return categories['2G'] && categories['3G'] && categories['4G'];
}
}
{
"count": 4,
"next": null,
"previous": null,
"type": "FeatureCollection",
"features": [
{
"id": 1,
"region_prefix": "97",
"cell_site_number": 1,
"description": "",
"address": "",
"commissioning": "",
"bs_id": "",
"height_asl": 0,
"bands": [
{
"name": "2G",
"frequency": "900"
},
{
"name": "2G",
"frequency": "1800"
},
{
"name": "3G",
"frequency": "2100"
},
{
"name": "4G",
"frequency": "1800"
},
{
"name": "4G TDD",
"frequency": "2600"
}
],
"status": true,
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [55.755815, 37.613]
},
"properties": {
"balloonContentHeader": "balloonContentHeader",
"balloonContentBody": "balloonContentBody",
"balloonContentFooter": "balloonContentFooter",
"clusterCaption": "clusterCaption",
"hintContent": "hintContent",
"iconCaption": "2G 3G 4G"
},
"has_bands": [
"3G",
"2G",
"4G"
]
},
{
"id": 2,
"region_prefix": "97",
"cell_site_number": 2,
"description": "",
"address": "",
"commissioning": "",
"bs_id": "",
"height_asl": 0,
"bands": [
{
"name": "2G",
"frequency": "900"
},
{
"name": "2G",
"frequency": "1800"
},
{
"name": "3G",
"frequency": "2100"
},
{
"name": "4G",
"frequency": "1800"
},
{
"name": "4G TDD",
"frequency": "2600"
}
],
"status": true,
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [55.759, 37.613]
},
"properties": {
"balloonContentHeader": "balloonContentHeader",
"balloonContentBody": "balloonContentBody",
"balloonContentFooter": "balloonContentFooter",
"clusterCaption": "clusterCaption",
"hintContent": "hintContent",
"iconCaption": "2G 3G 4G"
},
"has_bands": [
"3G",
"2G",
"4G"
]
},
{
"id": 3,
"region_prefix": "97",
"cell_site_number": 3,
"description": "",
"address": "",
"commissioning": "",
"bs_id": "",
"height_asl": 0,
"bands": [
{
"name": "3G",
"frequency": "2100"
}
],
"status": true,
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [55.7204, 37.6167]
},
"properties": {
"balloonContentHeader": "balloonContentHeader",
"balloonContentBody": "balloonContentBody",
"balloonContentFooter": "balloonContentFooter",
"clusterCaption": "clusterCaption",
"hintContent": "hintContent",
"iconCaption": "3G"
},
"has_bands": [
"3G",
]
},
{
"id": 4,
"region_prefix": "97",
"cell_site_number": 4,
"description": "",
"address": "",
"commissioning": "",
"bs_id": "",
"height_asl": 0,
"bands": [
{
"name": "4G",
"frequency": "1800"
},
{
"name": "4G TDD",
"frequency": "2600"
}
],
"status": true,
"type": "Feature",
"geometry": {
"type": "Point",
"coordinates": [55.7704, 37.6119]
},
"properties": {
"balloonContentHeader": "balloonContentHeader",
"balloonContentBody": "balloonContentBody",
"balloonContentFooter": "balloonContentFooter",
"clusterCaption": "clusterCaption",
"hintContent": "hintContent",
"iconCaption": "4G"
},
"has_bands": [
"4G"
]
}]}
我自己解决了这个问题。
预期的输出是什么？@molamk，根据文档过滤功能。获取添加到ObjectManager的单个对象。如果函数返回true，将处理该对象。如果为false，则对象将被排除在进一步处理之外。字符串也可以作为筛选器传递。对于筛选器，可以指定返回true或false的表达式。