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Javascript 如何知道两个数组（一个嵌套在一个对象中）之间有多少匹配项？

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Javascript 如何知道两个数组（一个嵌套在一个对象中）之间有多少匹配项？,javascript,arrays,reactjs,object,Javascript,Arrays,Reactjs,Object,我需要知道人与人之间有多少匹配项。比较数组和名称数组，然后创建包含此数据的新对象 names = [ 'Juan', 'Old'] people = [ {compare: ['Juan', 'Old'], Age: 70}, {compare: ['Juan', 'Young'], Age: 20} ] 预期产出： peopleNew = [ {compare: ['Juan', 'Old'], 'Age': 70, 'MATCHES': 2}, {compare: ['J

我需要知道人与人之间有多少匹配项。比较数组和名称数组，然后创建包含此数据的新对象

names = [ 'Juan', 'Old']

people = [
  {compare: ['Juan', 'Old'], Age: 70},
  {compare: ['Juan', 'Young'], Age: 20}
]
预期产出：

peopleNew = [
  {compare: ['Juan', 'Old'], 'Age': 70, 'MATCHES': 2},
  {compare: ['Juan', 'Young'], 'Age': 20, 'MATCHES': 1}
]
此代码循环遍历每个数组，并使用array.includes（）检查每个项是否相等：

const peopleNew = people.map(obj => {
  let matches = 0;
  
  obj.compare.forEach(name => {
    if (names.includes(name)) {
      matches++; // Increase count by 1
    }
  })
  
  // Create new object from original with new 'matches' property
  return Object.assign({}, obj, { matches });
});

constpeoplenew=people.map（{compare，Age}）=>（{compare，Age，MATCHES:compare.filter（v=>names.includes（v））.length}）