从Node.js中的Array对象中删除特定属性 [英] Remove specific properties from Array objects in Node.js

问题描述

例如，我有这个数组，如果我将其字符串化，它将像这样:

For example I have this array, if I stringfy it it would be like this:

[{"car":"Toyota","ID":"1", "Doors": "4", "price": "20.000"},{"car":"Chevrolet","ID":"2", "Doors": "2", "price": "15.000"}]

我该如何从2辆车上拆除:车门和价格.并且只保留数组"car"和"id"吗?例如:

How can I do for remove from the 2 cars: the doors and price. And only leave in the array "car" and "id"? For example:

[{"car":"Toyota","ID":"1"},{"car":"Chevrolet","ID":"2"}]

谢谢！

推荐答案

您可以使用

map()方法使用调用a的结果创建一个新数组在调用数组中的每个元素上提供了功能.

The map() method creates a new array with the results of calling a provided function on every element in the calling array.

这应该是您的代码:

var results = arr.map(function(item){
  return {car : item["car"], ID : item["ID"]}
});

演示:

var arr = [{"car":"Toyota","ID":"1", "Doors": "4", "price": "20.000"},{"car":"Chevrolet","ID":"2", "Doors": "2", "price": "15.000"}];

var results = arr.map(function(item){
  return {car : item["car"], ID : item["ID"]}
});
console.log(JSON.stringify(results));

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