类型'（event：FormEvent <htmlinputelement>）=>无效'不能分配给类型'（）=>任何'

Question

  

类型'（event：FormEvent）=>无效'不能分配给类型'（）=>任何'。

在我的父组件中，我只是向孩子传递了一个处理onChange的函数：

<SearchInput handleSearchTyping={this.handleSearchTyping}/>

---

@bind
handleSearchTyping(event: React.FormEvent<HTMLInputElement>) {
  const target = event.target as HTMLInputElement;
  const { value: searchText } = target;

  const search = (text: string) => {
    const { searchList } = this.state;
    const searchedCoins = findAsset(text, searchList);
    this.setState({ searchList: searchedCoins });
  };

  const clearSearch = () => {
    this.setState({ searchList: this.state.saved });
  };

  const handleUpdate = (num: number) => (num > 1 ? search(searchText) : clearSearch());

  return handleUpdate(searchText.length);
}

---

孩子：SearchInput：

import React from 'react'

export const SearchInput = (props: { handleSearchTyping(): void }) =>
  <input type="text" placeholder="Search here" onChange={props.handleSearchTyping} />;

也尝试过：

interface IProps {
  handleSearchTyping(): void;
}

export const SearchInput = (props: IProps) =>
  <input type="text" placeholder="Search here" onChange={props.handleSearchTyping} />;

插入SearchInput道具中的正确类型是什么？

Answer 1

啊，刚刚修好了

import React from 'react'

interface IProps {
  handleSearchTyping(event: React.FormEvent<HTMLInputElement>): void;
}

export const SearchInput = (props: IProps) =>
  <input type="text" placeholder="Search here" onChange={props.handleSearchTyping} />;

---

需要使用event: React.FormEvent<HTMLInputElement>类型。