错误 TS2741:类型中缺少属性

本文介绍了错误 TS2741:类型中缺少属性的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

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在文件 models/User.model.ts(见下文)中，我尝试设置一个方法 isEqual，如下面的代码所示.有人可以更正我的代码吗?

In file models/User.model.ts (see below) I tried to set a method isEqual as shown in code below. Could someone correct my code ?

文件模型/User.model.ts:

file models/User.model.ts:

export class User {
    constructor(
    public firstName: string,
    public lastName: string,
    ) {}

    isEqual (other : User): boolean {
    return other === this;
    }
}

文件服务/user.service.ts :

file services/user.service.ts :

import { User } from '../models/User.model';
import { Subject } from 'rxjs/Subject';

export class UserService {

    private users: User[] = [
    {
        firstName: 'William',
        lastName: 'Jones'
    },
    {
        firstName: 'John',
        lastName: 'Doe'
    }
    ];

...

services/user.service.ts(7,2) 中的错误:错误 TS2741:属性 'isEqual' 在类型 '{ firstName: string;lastName: string;}' 但在类型 'User' 中是必需的.

ERROR in services/user.service.ts(7,2): error TS2741: Property 'isEqual' is missing in type '{ firstName: string; lastName: string;}' but required in type 'User'.

推荐答案

它指定您在函数 isEqual 中获取的参数的类型或模型应为 { firstName: 'John', lastName: 'Doe' }，这说明你只需要以这种格式传递数据即可.

It is specifying that the parameter you are taking in function isEqual should be of type or model as { firstName: 'John', lastName: 'Doe' }, this shows you just need to pass data in this format.

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