基于另一个对象数组创建对象数组JavaScript
假设我们有一个对象数组，其中包含有关某些用户喜欢的数据，例如：
const arr = [
{"user":"dan","liked":"yes","age":"22"},
{"user":"sarah","liked":"no","age":"21"},
{"user":"john","liked":"yes","age":"23"},
];我们需要编写一个包含一个这样的数组的JavaScript函数。该函数应基于此数组构造另一个数组，如下所示：
const output = [
{"dan":"yes"},
{"sarah":"no"},
{"john":"yes"},
];示例
const arr = [
{"user":"dan","liked":"yes","age":"22"},
{"user":"sarah","liked":"no","age":"21"},
{"user":"john","liked":"yes","age":"23"},
];
const mapToPair = (arr = []) => {
const result = arr.map(obj => {
const res = {};
res[obj['user']] = obj['liked'];
return res;
});
return result;
};
console.log(mapToPair(arr));输出结果
控制台中的输出将是-
[ { dan: 'yes' }, { sarah: 'no' }, { john: 'yes' } ]