TypeScript 2:从 2-field 对象中删除项目 [英] TypeScript 2: Remove item from 2-field object

问题描述

我有一个像这样的 2-field 对象

I have a 2-field object like this

{ id: number, name: string }

...并且想要删除 name 项.

...and want to remove the name item.

我如何在 TypeScript 中实现这一点?我试过使用过滤器、删除等，但我得到的只是

How do I accomplish that in TypeScript? I've tried using filter, delete etc but all I get is

TS2339: Property 'filter' does not exist on type '{}'.

我认为这与这个问题有关 什么是type '{}'"?但我需要帮助才能弄清楚.

I think this relates to this question What is "type '{}'"? but I need help to figure it out.

推荐答案

考虑:

let x : { id: number, name?: string } = {id: 1, name: 'foo'};

你可以简单地使用删除:

You can simply use delete:

delete x.name;
console.log(x); // {id: 1}

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