2021-09-04
function fireKeyEvent(el: HTMLElement, evtType: string, keyChar: string, keyCode: number) {
el.focus()
const KeyboardEventInit = {key: keyChar, code: keyChar, location: 0, repeat: false,
isComposing: false, bubbles: true, composed: true, charCode: keyCode, keyCode: keyCode}
const evtObj: any = new KeyboardEvent(evtType, KeyboardEventInit)
evtObj.stop = evtObj.stopPropagation
el.dispatchEvent(evtObj)
}
fireKeyEvent(target, 'keydown', 'ArrowUp', 38)
虽然MDN上说charCode和keyCode已废弃，但是KeyboardEventInit中不加这2个配置，这个事件根本就触发不了
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