提取 javascript 数组值作为 Object 键

Question

我有以下带有对象的数组

objectArray = [{name: “E-mail”, data_type: “text”}, {name: “Number”, data_type: “text”}, {name: “Person”, data_type: “text”}]

我只需要从数组 object 中提取name prop 作为新 object 中的键，如下所示：

counterObject = {E-mail: 0, Number: 0, Person: 0}

我试过map像这样的数组

objectArray((elem) => {
                return {[elem.name]:0};
            }))

我得到了以下结果：

[{Text: 0}, {Number: 0}, {E-mail: 0}, {Person: 0}, {Upload: 0}, {Date: 0}, {Link: 0}] 

Answer 1

您可以为此使用reduce ：

 const objectArray = [{name: "E-mail", data_type: "text"}, {name: "Number", data_type: "text"}, {name: "Person", data_type: "text"}]; const result = objectArray.reduce((res, o) => ({...res, [o.name]: 0 }), {}); console.log(result);

Answer 2

试试这个代码

let extractedKeys = Object();

for(i = 0; i < objectArray.length ; i++){

     extractedKeys[objectArray[i]['name']] = 0;
}

console.log(extractedKeys);

Answer 3

（不是单独的答案；@MeBottleOScrumpy 的清理工作略有修改，以供参考。）

 const objectArray = [{name: "E-mail", data_type: "text"}, {name: "Number", data_type: "text"}, {name: "Person", data_type: "text"}] const extractedKeys = {} objectArray.forEach(o => extractedKeys[o.name] = 0) console.log(extractedKeys);