[英]Javascript: Unable to create array based on matching nested values in 2 arrays
我有2个对象数组,我想对文章Author进行匹配并推送到新数组
var result4 = [{
path: "don-t-call-me",
details: {
articleTitle: "Don’t call me",
articleAuthor: "Dave Wood",
}
},
{
path: "diary",
details: {
articleTitle: "Diary",
articleAuthor: "Alan Johnson",
}
}
}]
var result3 = [{
path: "letters",
letters: 7
},
{
path: "dont-call-me",
details: {
articleTitle: "Don’t call me"
articleAuthor: "Dave Wood",
}
}, {
path: "reduced-to-ashes-and-rubbage",
details: {
articleTitle: "Reduced to rubble",
articleAuthor: "Jack Jones",
}
}, {
path: "diary-for-2018",
details: {
articleTitle: "Diary for 1998",
articleAuthor: "Alan Johnson",
}
}
]
因此我希望输出是
var newArr1 = [{
path: "don-t-call-me",
details: {
articleTitle: "Don’t call me",
articleAuthor: "Dave Wood",
}
},
{
path: "diary",
details: {
articleTitle: "Diary",
articleAuthor: "Alan Johnson",
}
}
}]
var newArr2 = [
{
path: "dont-call-me",
details: {
articleTitle: "Don’t call me"
articleAuthor: "Dave Wood",
}
}, {
path: "diary-for-2018",
details: {
articleTitle: "Diary for 1998",
articleAuthor: "Alan Johnson",
}
}
]
目前,我从每个数组创建一个集合,每个数组仅包含来自每个数组元素的details对象
var set3 = new Set(result3.map(({ details }) => details));
var set4 = new Set(result4.map(({ details }) => details));
然后使用set.has()创建一个新数组
var newArr1 = result3.filter(({ articleAuthor }) => set4.has(articleAuthor));
var newArr2 = result4.filter(({ articleAuthor }) => set3.has(articleAuthor));
newArr2的输出正确,但newArr1为空
您需要对作者进行更深层次的破坏,
{ details: { articleAuthor } = {} }
因为如果没有,您将获取Set
的对象detail
,并且该值在每个对象文字中都是唯一的。 而且您没有获得articleAuthor
。
var result4 = [{ path: "don-t-call-me", details: { articleTitle: "Don't call me", articleAuthor: "Dave Wood" } }, { path: "diary", details: { articleTitle: "Diary", articleAuthor: "Alan Johnson" } }], result3 = [{ path: "letters", letters: 7 }, { path: "dont-call-me", details: { articleTitle: "Don't call me", articleAuthor: "Dave Wood" } }, { path: "reduced-to-ashes-and-rubbage", details: { articleTitle: "Reduced to rubble", articleAuthor: "Jack Jones" } }, { path: "diary-for-2018", details: { articleTitle: "Diary for 1998", articleAuthor: "Alan Johnson" } }], set3 = new Set(result3.map(({ details: { articleAuthor } = {} }) => articleAuthor)), set4 = new Set(result4.map(({ details: { articleAuthor } = {} }) => articleAuthor)), newArr1 = result3.filter(({ details: { articleAuthor } = {} }) => set4.has(articleAuthor)), newArr2 = result4.filter(({ details: { articleAuthor } = {} }) => set3.has(articleAuthor)); console.log(newArr1); console.log(newArr2); console.log([...set3]); console.log([...set4]);
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