通过仅选择对象的一部分属性，从另一个对象数组构建对象数组

Question

具有以下输入数组：

const initialArray = [{name: 'john', age: 12, height: 178, likes: 'music'},
                      {name: 'mike', age: 22, height: 181, likes: 'sport'},
                      {name: 'anna', age: 18, height: 175, likes: 'sleep'},
                      {name: 'paul', age: 24, height: 170, likes: 'drink'}
                     ];

我想构建一个新的对象数组，其中仅包含一些属性，例如name和height。结果将是：

result = [{name: 'john', height: 178},
          {name: 'mike', height: 181},
          {name: 'anna', height: 175},
          {name: 'paul', height: 170}
         ];

尝试过map，但可能有问题：

  const result = initialArray.map((a) => {
    a.name, a.height
  });

Answer 1

您应该在内部使用return关键字{}或用（括号）扭曲代码()。

您可以尝试使用Destructuring assignment它允许您在结果对象中指定所需的属性名称：

const initialArray = [
  {name: 'john', age: 12, height: 178, likes: 'music'},
  {name: 'mike', age: 22, height: 181, likes: 'sport'},
  {name: 'anna', age: 18, height: 175, likes: 'sleep'},
  {name: 'paul', age: 24, height: 170, likes: 'drink'}
];
const result = initialArray.map(({name, height}) => ({name,height}));
console.log(result);