typescript 将 window.event 处理程序添加到打字稿
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Adding window.event handler to typescript
提问by TopBanana9000
Normally when I wanted to catch an event on a page in js:
通常，当我想在 js 中的页面上捕获事件时：
window.onkeydown = function (event) {
//Do something here
}
I cannot seem to figure out (or Google) how to do this in typescript. For the setup I am working in, there is a tsfile for the page, and a tsfile for the class that it is loading.
我似乎无法弄清楚（或谷歌）如何在打字稿中做到这一点。对于我正在使用的设置，ts页面有一个ts文件，它正在加载的类有一个文件。
回答by Bruno Grieder
This
这
window.addEventListener('keydown', keyDownListener, false)
windowis defined will all events in lib.d.tsand this particular listener as
window将所有事件lib.d.ts和此特定侦听器定义为
addEventListener(type: "keydown", listener: (ev: KeyboardEvent) => any, useCapture?: boolean): void;
or this, if you want to keep your original "style",
或者这个，如果你想保持你原来的“风格”，
window.onkeydown = (ev: KeyboardEvent): any => {
//do something
}
回答by manu
To answer more clearly:
更清楚地回答：
const controlDown = (event: KeyboardEvent) => {
console.log(event);
};
window.addEventListener('keydown', controlDown);
