javascript - 将一个对象的值匹配到另一个对象

Question

我有两个对象数组:

[ 
  0: {key1: value1, key2: value2, key3: value3},
  1: {key1: value1, key2: value2, key3: value3} 
]

[  
  0: {stop_id: 173, file_id: "1", key_type: null, key_value: "0020", seg_beg: 32},
  1: {stop_id: 176, file_id: "1", key_type: null, key_value: "0201", seg_beg: 10},
  2: {stop_id: 176, file_id: "1", key_type: null, key_value: "0201", seg_beg: 10}
]

我需要检查第一个对象中任何键的值是否与第二个对象中key_value...键的任何值匹配，然后设置一个变量，直到匹配记录中的 stop_id 值。像这样:

if(object1.value === object2.key_value){
    match = object2[iterator].stop_id;
}

为了简化这一点，我尝试只获取第一个对象的值:

//pd.segs is object 1
let pdSegValues = [];

for(let i=0;i<pd.segs.length;i++){
  pdSegValues.push(Object.values(pd.segs[i]));
}

但这又让我得到了一个数组，基本上让我回到了同样的情况。我的大脑很糟糕，而且不可否认的是，我对循环有弱点。谁能告诉我一种体面的方法来完成我在这里需要的事情？

Answer 1

您可以通过收集要测试的值然后使用 some 来完成此操作.

let arr1 = [
    {"a1": "value1", "b1": "value2"},
    {"a2": "0020", "b2": "value22"},
    {"a3": "value111", "b3": "0201"}
];

let arr2 = [  
    {stop_id: 173, file_id: "1", key_type: null, key_value: "0020", seg_beg: 32},
    {stop_id: 176, file_id: "1", key_type: null, key_value: "0201", seg_beg: 10},
    {stop_id: 176, file_id: "1", key_type: null, key_value: "0201", seg_beg: 10}
];

// accumulate unique arr1 values to an array
let arr1Values = Array.from(arr1.reduce((acc, curr) => {
    Object.values(curr).forEach(v => acc.add(v));
    return acc;
}, new Set()));

// accumulate all unique arr2 "key_value"
let arr2KeyValues = arr2.reduce((acc, curr) => {
    acc.add(curr.key_value);
    return acc;
}, new Set());

console.log(arr1Values);
console.log(Array.from(arr2KeyValues));

// Test if any of the values in objects in the first array are 
// equal to any of the key_values in the second array
console.log(arr1Values.some(k => arr2KeyValues.has(k)));