我尝试了很多方法,但我一直无法让 onChange 工作。我正在开发一个搜索栏组件,该组件在用户 3 秒内未更改搜索栏输入后进行 fetch 调用,但我在更改 userSearchInput 状态挂钩时遇到问题,该挂钩在 useEffect 中触发 api 调用。这是代码的最小化版本:
import React, { useState, useEffect } from "react";
import Select from "react-select";
export default function SearchBar() {
const [userSearchInput, setUserSearchInput] = useState("");
const [searchSuggestions, setSearchSuggestions] = useState([]);
useEffect(() => {
const searchSuggestions = async (searchInput) => {
console.log("api called");
const searchSuggestions = await fetch(
'API STUFF'
)
.then((response) => response.json())
.then((data) => {
setSearchSuggestions(data.quotes);
});
};
const timer = setTimeout(() => {
if (userSearchInput !== "") {
searchSuggestions("test");
}
}, 3000);
return () => clearTimeout(timer);
}, [userSearchInput]);
const handleSearchInputChange = (event) => {
setUserSearchInput(event.target.value);
console.log("input changed");
};
return (
<Select
options={searchSuggestions}
value={userSearchInput}
placeholder="Search a ticker"
onChange={handleSearchInputChange}
/>
);
}
对我哪里出错有什么想法吗?
答案 0 :(得分:0)
select 具有包含“label”和“value”的对象值
另外,react select 已经在函数的参数中返回值,所以你所要做的就是使用它
const handleSearchInputChange = (selectedOptionObj) => {
setUserSearchInput(selectedOptionObj);
console.log("input changed");
};