import React from 'react'
export default function Test() {
const handleClick = () => (label: string) => {
console.log('label: ' + label)
}
return <button onClick={handleClick('red one')}>click me</button>
}
TypeScript 編譯器抱怨我的程式碼，我做錯了什麼？
Type '(label: string) => void' is not assignable to type 'MouseEventHandler<HTMLButtonElement>'.
Types of parameters 'label' and 'event' are incompatible.
Type 'MouseEvent<HTMLButtonElement, MouseEvent>' is not assignable to type 'string'.ts(2322)
index.d.ts(1494, 9): The expected type comes from property 'onClick' which is declared here on type 'DetailedHTMLProps<ButtonHTMLAttributes<HTMLButtonElement>, HTMLButtonElement>' 
handleClick函數不需要任何類型的參數，但您向其傳遞一個字串。應該是：
import React from 'react' export default function Test() { const handleClick = (label: string) => () => { console.log('label: ' + label) } return }反之亦然
應該是
(label: string) => (e: any) => {而不是
(e: any) => (label: string) => {import React from 'react' export default function Test() { const handleClick = (label: string) => (e: any) => { console.log('label: ' + label) } return }