javascript - 基于值从对象数组形成对象

Question

需要搜索对象数组并根据值 'X' 和 'AND'/OR 形成一个对象。尝试使用以下代码但无法继续

输入:

 let objArr = [ {"L1":"NA","L2":"X","L1L2":"NA","L3":"NA"},{"L1":"X","L2":"NA","L1L2":"AND","L3":"NA"} ]

输出:

Obj = {"L1":"X","L2":"X","L1L2":"AND","L3":"NA"}          

代码:

 Object.keys(objArr ).forEach((key) => {
      if (!(temp[key] == "X" || temp[key] == "AND" || temp[key] == "OR")) {
        temp[key] = objArr [key]
      }
    })

Answer 1

您可以在检查后获取键并映射条目并创建一个新对象。

let array = [
      { L1: "NA", L2: "X",  L1L2: "NA",  L3: "NA" },
      { L1: "X",  L2: "NA", L1L2: "AND", L3: "NA" }
    ],
    prime = ['X', 'AND', 'OR'],
    result = array.reduce((a, b) => Object.fromEntries(Object
        .keys(a)
        .map(k => [k, prime.includes(b[k]) ? b[k] : a[k]])
    ));

console.log(result);