在另一个对象 JavaScript 中搜索多个对象值



我有 2 个对象数组,我想比较第二个对象数组中存在的所有第一个数组对象属性和值。(在对象级别。

阵列 1

 [
  {
    "id": "id1",
    "name": "name1"
  },
  {
    "id": "id3",
    "name": "name3"
  }
]

阵列 2

[
  {
    "id": "id1",
    "name": "name1",
    "other": "other"
  },
  {
    "id": "id2",
    "name": "name2",
    "other": "other"
  },
  {
    "id": "id3",
    "name": "name3",
    "other": "other"
  }
]

在这种情况下,它将返回 true,因为数组 2 中存在数组 1 的所有值。

但是如果我有一个与数组 2 不匹配的属性值,它将返回 false。

 [
  {
    "id": "id1",
    "name": "name1"
  },
  {
    "id": "id5",
    "name": "name3"
  }
]

这将返回 false,因为 { "id": "id5","name": "name3"} 不存在于数组 2 中。

我正在尝试与两个 for 循环进行比较,但我想在两个循环完成比较所有属性和值后只返回一次 false。

这是我正在尝试的两个循环,我知道这是错误的,因为当没有找到值时它会返回 false,并且它不会进入进一步的循环。

for (var i = 0,   i < a.length; i++) {
  for (var j = 0, j < b.length; j++) {
    if (b[j].id === a[i].id && b[j].name === a[i].name) {
      console.log('all values found');
      return true;
    }
    console.log('some values does not found');
     return false;
  }
}

我也在使用洛达什。

使用 lodash 的_.intersectionBy(),并将结果的长度与较短数组的长度进行比较:

var arr1 = [{"id":"id1","name":"name1","other":"other"},{"id":"id2","name":"name2","other":"other"},{"id":"id3","name":"name3","other":"other"}];
var arr2 = [{"id":"id1","name":"name1"},{"id":"id3","name":"name3"}];
var arr3 = [{"id":"id1","name":"name1"},{"id":"id5","name":"name3"}];
var result1_2 = _.intersectionBy(arr2, arr1, 'id').length === arr2.length;
var result1_3 = _.intersectionBy(arr3, arr1, 'id').length === arr3.length;
console.log(result1_2);
console.log(result1_3);
<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.4/lodash.min.js"></script>

如果对象属性具有相同的顺序,这可以解决您的问题:

const array1 = [
  {
    "id": "id1",
    "name": "name1"
  },
  {
    "id": "id2",
    "name": "name2"
  }
],
array2 = [
  {
    "id": "id1",
    "name": "name1",
    "other": "other"
  },
  {
    "id": "id2",
    "name": "name2",
    "other": "other"
  },
  {
    "id": "id3",
    "name": "name3",
    "other": "other"
  }
];
let present = true,
item,
property,
properties;
for (let i = 0; i < array1.length && present; i++) {
    item = array1[i];
    properties = Object.keys(item);
  for (let j = 0; j < properties.length; j++) {
    property = item[properties[j]];
    if (item.hasOwnProperty(properties[j])) {
      if (property !== array2[i][Object.keys(array1[i])[j]]) {
        present = false;
      } 
    }
  }
}
非常简单

的丑陋方法是将对象转换为字符串并进行比较,但这需要您的对象具有相同的属性

 var a1 = [
  {
    "id": "id1",
    "name": "name1"
  },
  {
    "id": "id3",
    "name": "name3"
  }
];
var a2 = [
  {
    "id": "id1",
    "name": "name1",
  },
  {
    "id": "id2",
    "name": "name2",
  },
  {
    "id": "id3",
    "name": "name3",
  }
];
var a3 =  [
  {
    "id": "id1",
    "name": "name1"
  },
  {
    "id": "id5",
    "name": "name3"
  }
];

var doesArrayBContainArrayA = function(a,b)
{
  var u = [];
  a.map(e => 
        {
          var match = false;
          b.forEach(function(bx){
            if(!match){
             match = JSON.stringify(bx) === JSON.stringify(e);  
            }
          });
          if (!match){ 
              //console.log(JSON.stringify(bx)+'--'+JSON.stringify(e));
              u.push(e);   //add non existing item to temp array
            }
  });
  return u.length === 0;
}
var result = doesArrayBContainArrayA(a3,a2);
var result2 = doesArrayBContainArrayA(a1,a2);
console.log(result);
console.log(result2);

最新更新