Javascript 如何将值从一个组件传递到另一个组件?
我有一个SearchBox.js组件,它在更改时设置两个值。我想在单击Movie.js组件时将选择值和输入值传递给Movie.js组件,我只能传递一个值,但不能传递第二个值(yearValue),有没有办法将两个值传递给Movie.js组件Javascript 如何将值从一个组件传递到另一个组件?,javascript,reactjs,components,react-props,Javascript,Reactjs,Components,React Props,我有一个SearchBox.js组件,它在更改时设置两个值。我想在单击Movie.js组件时将选择值和输入值传递给Movie.js组件,我只能传递一个值,但不能传递第二个值(yearValue),有没有办法将两个值传递给Movie.js组件 function SearchBox(props) { const [searchValue, setSearchValue] = useState(""); const [yearValue, setYearValue] = u
function SearchBox(props) {
const [searchValue, setSearchValue] = useState("");
const [yearValue, setYearValue] = useState("");
const getDropList = () => {
const year = new Date().getFullYear();
return Array.from(new Array(121), (v, i) => (
<option key={i} value={year - i}>
{year - i}
</option>
));
};
return (
<div>
<Container>
<Row>
<Col>
<InputGroup className="mb-3">
<select value={yearValue} onChange={e => setYearValue(e.target.value)}>
{getDropList()}
</select>
<FormControl
value={searchValue}
type="text"
name="searchValue"
onChange={e => setSearchValue(e.target.value)}
placeholder="Search by title"
aria-describedby="basic-addon2"
/>
<InputGroup.Append>
<Button
onClick={() => props.onSubmit(searchValue)}
variant="dark"
>
Search
</Button>
</InputGroup.Append>
</InputGroup>
</Col>
</Row>
</Container>
</div>
);
}
export default SearchBox;
function Movie() {
const [data, setData] = useState(null);
const [error, setError] = useState(null);
const [loading, setLoading] = useState(false);
const [q, setQuery] = useState("");
const [activateModal, setActivateModal] = useState(false);
const [detail, setShowDetail] = useState(false);
const [detailRequest, setDetailRequest] = useState(false);
const [year,setYear] = useState("")
return (
<div>
<Row>
<Col>
<SearchBox onSubmit={setQuery} />
</Col>
</Row>
功能搜索框(道具){
常量[searchValue,setSearchValue]=useState(“”);
const[yearValue,setYearValue]=useState(“”);
常量getDropList=()=>{
const year=新日期().getFullYear();
返回数组.from(新数组(121),(v,i)=>(
{year-i}
));
};
返回(
setYearValue(e.target.value)}>
{getDropList()}
setSearchValue(e.target.value)}
占位符=“按标题搜索”
aria descripeby=“basic-addon2”
/>
props.onSubmit(searchValue)}
variant=“深色”
>
搜寻
);
}
导出默认搜索框;
功能电影(){
const[data,setData]=useState(null);
const[error,setError]=useState(null);
const[loading,setLoading]=useState(false);
const[q,setQuery]=useState(“”);
const[activateModal,setActivateModal]=useState(false);
const[detail,setShowDetail]=使用状态(false);
const[detailRequest,setDetailRequest]=useState(false);
const[year,setYear]=useState(“”)
返回(
您可以这样传递这两个值:
<Button
onClick={() => props.onSubmit(searchValue,yearValue)}
variant="dark"
>
Search
</Button>
您可能需要查看React文档以了解
渲染道具
技术
术语“渲染道具”指的是一种在用户之间共享代码的技术
使用值为函数的道具对组件进行反应。
了解更多信息
function Movie() {
const [data, setData] = useState(null);
const [error, setError] = useState(null);
const [loading, setLoading] = useState(false);
const [q, setQuery] = useState("");
const [activateModal, setActivateModal] = useState(false);
const [detail, setShowDetail] = useState(false);
const [detailRequest, setDetailRequest] = useState(false);
const [year, setYear] = useState("");
const handleSubmit = (selectValue,yearValue) => {
//do whatever you want to do
}
return (
<div>
<Row>
<Col>
<SearchBox onSubmit={handleSubmit} />
</Col>
</Row>
</div>
);
}