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 編譯器抱怨我的代碼，我做錯(cuò)了什么？
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>' 
2
0
0
handleClick 函數(shù)不需要任何類型的參數(shù)，但您向其傳遞一個(gè)字符串。
應(yīng)該是：
import React from 'react'
export default function Test() {
const handleClick = (label: string) => () => {
console.log('label: ' + label)
}
return
}
反之亦然
應(yīng)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
}
