We are creating a web user interface that looks like a desktop window.
Now we need to handle the Alt key. When Alt key is pressed the focus goes to the upper menu.
In Javascript, how to get the event for Alt key when ONLY Alt key is pressed?
我需要确保没有同时按下其他键。
也许像这样
document.onkeydown = keydown;
function keydown(evt) {
if (!evt) evt = event;
if (evt.altKey) {
console.log('alt');
}
} // function keydown(evt)
<input type"text" onkeydown="keydown" />
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