【发布时间】:2020-04-27 14:53:47
【问题描述】:
我有一个如下定义的 keydown 处理函数:
handleOnKeyDown = (e: React.KeyboardEvent<HTMLButtonElement>) => {
if (key.isEscape(e.key)) {
stopEvent(e);
this.props.handleClose(e);
}
}
但是在我的代码的另一部分中,此函数被传递给 removeEventListener 和 addEventListener:
componentDidMount () {
const { current: modal } = this.modalRef;
if (modal) {
modal.addEventListener('keydown', this.handleOnKeyDown);
}
}
componentWillUnmount () {
const { current: modal } = this.modalRef;
if (modal) {
modal.removeEventListener('keydown', this.handleOnKeyDown);
}
}
我收到以下 Typescript 错误:
No overload matches this call.
Overload 1 of 2, '(type: "keydown", listener: (this: HTMLDivElement, ev: KeyboardEvent) => any, options?: boolean | EventListenerOptions | undefined): void', gave the following error.
Argument of type '(e: React.KeyboardEvent<HTMLButtonElement>) => void' is not assignable to parameter of type '(this: HTMLDivElement, ev: KeyboardEvent) => any'.
Types of parameters 'e' and 'ev' are incompatible.
Type 'KeyboardEvent' is missing the following properties from type 'KeyboardEvent<HTMLButtonElement>': locale, nativeEvent, isDefaultPrevented, isPropagationStopped, persist
Overload 2 of 2, '(type: string, listener: EventListenerOrEventListenerObject, options?: boolean | EventListenerOptions | undefined): void', gave the following error.
Argument of type '(e: React.KeyboardEvent<HTMLButtonElement>) => void' is not assignable to parameter of type 'EventListenerOrEventListenerObject'.
Type '(e: React.KeyboardEvent<HTMLButtonElement>) => void' is not assignable to type 'EventListener'.
Types of parameters 'e' and 'evt' are incompatible.
Type 'Event' is missing the following properties from type 'KeyboardEvent<HTMLButtonElement>': altKey, charCode, ctrlKey, getModifierState, and 12 more.ts(2769)
有什么办法可以解决这个问题?
【问题讨论】:
-
您需要显示此函数传递给 removeEventListener 和 addEventListener 的位置
-
但是,错误信息很清楚....
Argument of type '(e: React.KeyboardEvent<HTMLButtonElement>) => void' is not assignable to parameter of type '(this: HTMLDivElement, ev: KeyboardEvent) => any'. -
正如 jaromanda 所暗示的那样,该错误使您看起来像是将事件侦听器分配给了不适当的 HTML 元素
-
这能回答你的问题吗? react typescript issue on addEvenListener
标签: reactjs typescript dom-events typescript-typings