将不同的id推送到数组，如果所有id都未定义，则获取一个数组
将不同的id推送到数组，如果所有id都未定义，则获取一个数组
提问于 2020-12-09 01:47:04
我正在尝试将id添加到数组中，如果它们可用，如下所示
export const extractOpaqueConstructionType = library => {
const opaqueConstructionSecondaryIds= [];
opaqueConstructionSecondaryIds.push(library?.exteriorWallId);
opaqueConstructionSecondaryIds.push(library?.exteriorFloorId);
opaqueConstructionSecondaryIds.push(library?.roofId);
opaqueConstructionSecondaryIds.push(library?.interiorWallId);
opaqueConstructionSecondaryIds.push(library?.interiorFloorId);
opaqueConstructionSecondaryIds.push(library?.belowGradeWallId);
opaqueConstructionSecondaryIds.push(library?.slabOnGradeId);
return { opaqueConstructions: opaqueConstructionSecondaryIds || null };
};我在其他地方调用上面的函数，如下所示
extractSecondaryIds: library => {
const secondaryIds = {
...extractSourceOfData(library),
...extractOpaqueConstructionType(library), // this is where i am calling above function
...extractGlazingConstructionType(library)
};
return secondaryIds;
},例如，如果上面的所有id都是(exteriorWallId、exteriorFloorId等)都是未定义的，我从上面的函数(extractOpaqueConstructionType)得到输出，比如opaqueConstructions: [null]，如果id是未定义的，我希望是这样的opaqueConstructions: null
请任何人在这方面提出任何想法或替代方法，非常感谢我，非常感谢提前。
回答 2
Stack Overflow用户
回答已采纳
发布于 2020-12-09 03:43:19
推送完所有值后，需要对数组进行filter。
您还可以通过简单地删除推式调用来简化代码
export const extractOpaqueConstructionType = library => {
const opaqueConstructions = [
library?.exteriorWallId,
library?.exteriorFloorId,
library?.roofId,
library?.interiorWallId,
library?.interiorFloorId,
library?.belowGradeWallId,
library?.slabOnGradeId,
].filter(it => it !== null);
return { opaqueConstructions: opaqueConstructions.length ? opaqueConstructions : null };
}Stack Overflow用户
发布于 2020-12-09 03:03:03
尝试如下所示
export const extractOpaqueConstructionType = library => {
const opaqueConstructionSecondaryIds= [
library?.exteriorWallId
library?.exteriorFloorId,
library?.roofId,
library?.interiorWallId,
library?.interiorFloorId,
library?.belowGradeWallId,
library?.slabOnGradeId,
].filter(keyValue => keyValue!==undefine);
return { opaqueConstructions:opaqueConstructionSecondaryIds.length?
opaqueConstructionSecondaryIds : null };
};页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/65204124
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