【问题标题】:React with Typescript - Type { } is missing the following properties from type与 Typescript 反应 - 类型 { } 缺少类型中的以下属性
【发布时间】:2019-08-03 15:48:54
【问题描述】:

我正在尝试使用 TypeScript 学习 React,但我似乎一直遇到有点模糊的 TS 错误。

我在下面三个文件中编写了代码,在编译和运行时运行良好。我只是不断收到 TypeScript 抛出的这个超级烦人的错误

“类型 '{ id: any; key: any; }' 缺少来自类型 'ProfileCardProps' 的以下属性:登录名、名称”

// Form.tsx

import * as React from 'react';
import Axios from 'axios';

export default class Form extends React.Component<any,any>{
  constructor(props: any){
    super(props);
    this.state = { userName: ""};
  }

  handleSubmit = (event: React.FormEvent<EventTarget>): void => {
    event.preventDefault();

   //get request...
    .then(resp => {
        this.props.onSubmit(resp.data);
    console.log(resp.data);
    this.setState({userName: ''});
  };

  public render() {
    return(
      <div>
        <div className="col-sm-12">
          <form onSubmit={this.handleSubmit}>
            <label>Run lookup:<br />
              <input type="text"
                value = {this.state.userName}
                onChange = {(event) => this.setState({userName: event.target.value})}
                placeholder = "Enter Username..." >
              </input>
            </label>
            <button type="submit">Add user info</button>
          </form>
          <br />
        </div>
      </div>
    );
  };

}

// Card.tsx

import * as React from 'react';

interface ProfileCardProps{ 
  login: string; 
  name: string; 
}

const ProfileCard = (props: ProfileCardProps) => {

  return(
    <div className="card col-xs-1 col-sm-6 col-md-4 col-lg-3">
      <div className="profileWrapper">
        <div className="userName">
          <p>{props.login}</p>
        </div>
        <div className="user">
          <h3>{props.name}</h3>
        </div>
      </div>
    </div>
  )
}

const CardList = (props: { cards: { map: (arg0: (card: any) => JSX.Element) => React.ReactNode; }; }) => {
    return(
      <div className="row">

         // This is the line that is throwing the error
        {props.cards.map((card: { id: any; }) => <ProfileCard key={card.id} {...card} />)}
      </div>
    )
}

export default CardList;

//配置文件列表

import * as React from 'react';
import Form from './Form';
import CardList from './ProfileCard';

import "./ProfileStyles.scss";

export default class Profiles extends React.Component<any, any>{
state = {
    cards: [
      { login: "exampleLogin",
        name:"exampleName",
        key: 1
      },
      { login: "exampleLogin2",
        name:"exmapleName2",
        key: 2
      }
    ]
  }

  addNewCard = (cardInfo: any) => {
    this.setState((prevState: { cards: { concat: (arg0: any) => void; }; }) => ({
      cards: prevState.cards.concat(cardInfo)
    }));
  }


  public render() {
    return(
      <div className="cardSection">
        <h2>Profiles</h2> 
        <Form onSubmit={this.addNewCard} />
        <CardList cards={this.state.cards} />
      </div>
    )
  };
}

【问题讨论】:

    标签: reactjs typescript types


    【解决方案1】:

    当您将卡片传递给 ProfileCard 组件时,它会在 props 中传递 4 个值。

    {login: string, name: string, key: number, id: number}
    

    但是你的界面只有2个

    interface ProfileCardProps{ 
      login: string; 
      name: string; 
    }
    

    添加 key 和 id 应该可以解决问题。

    interface ProfileCardProps{ 
      login: string; 
      name: string;
      id:any;
      key: any;
    }
    

    【讨论】:

      【解决方案2】:

      这种类型的接口使用要求接口的所有成员都为空

      interface ProfileCardProps{ 
        login: string; 
        name: string;
        id?:number; 
      }
      

      【讨论】:

      • 不是真的,不是这个意思
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