javascript - 如何在 JavaScript 中将字符串数组转换为对象数组？

Question

我有这个数组:

myArray = ["AAA","BBB",...,"ZZZ"];

我想将其转换为对象数组。像这样的事情:

myArray = [
    {
        "Id": "111",
        "Value": "AAA"
    },
    ....
    {
        "Id": "111",
        "Value": "ZZZ"
    },
];

我尝试使用这样的ma​​p方法:

myArray.map(str => {
    let obj = {};
    obj['Id'] = '111';
    obj['Value'] = str;
});

但是 console.log(myArray) 输出:

undefined

Answer 1

您需要从映射器函数返回结果。

let myNewArray = myArray.map( str => {
      let obj = {};
      obj['Id'] = '111' ;
      obj['Value'] = str ;
      return obj;
});
// or 
let myNewArray = myArray.map( str =>  ({Id:111,Value:str}) );
// parenthesis are needed to remove the ambiguity with `{}`
console.log(myNewArray);

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/map#Using_map_to_reformat_objects_in_an_array