无法使用反应钩子传递更新的状态

Question

    const [endDate, setEndDate] = useState("");
    
    const getMinDate = () =>{
     if(endDate ==="")
        return "02/03/2020";
    else 
        return "10/10/2020";
    }

const selectStartDate = (value) =>{
setEndDate(value)
}
    
    return (<>
    <Select onChange={selectStartDate} />
    <Calendar min-date={getMinDate()}/>
    </>)

Im trying to change min-date params each time Select value changes as shown in the code but the value for min-date doesnt change on each time change

Answer 1

onChange 方法应该返回一个event ，然后您可以在 selectStateDate 函数中使用event.target.value解析该值。

const selectStartDate = (event) => setEndDate(event.target.value);