本文介绍了如何将 JavaScript 键盘快捷键添加到现有 JavaScript 函数?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!
问题描述
这是我的代码:
function pauseSound() {
var pauseSound = document.getElementById("backgroundMusic");
pauseSound.pause();
}
我想为这段代码添加一个键盘快捷键,我该如何做,以便在单击按钮时也可以执行该功能?
I would like to add a keyboard shortcut to this code, how can I do this so that the function can also be executed when a button is clicked too?
尝试添加一个 else if 语句,但它不起作用,有什么想法吗?
Tried to add an else if statement but it doesn't work, any ideas?
function doc_keyUp(e) {
if (e.ctrlKey && e.keyCode == 88) {
pauseSound();
}
else if (e.ctrlKey && e.keyCode == 84) {
playSound();
}
}
推荐答案
文档的 keyup 事件的事件处理程序似乎是一个合适的解决方案.
An event handler for the document's keyup event seems like an appropriate solution.
注意:KeyboardEvent.keyCode
已被弃用,取而代之的是 key
.
Note: KeyboardEvent.keyCode
was deprecated in favor of key
.
// define a handler
function doc_keyUp(e) {
// this would test for whichever key is 40 (down arrow) and the ctrl key at the same time
if (e.ctrlKey && e.key === 'ArrowDown') {
// call your function to do the thing
pauseSound();
}
}
// register the handler
document.addEventListener('keyup', doc_keyUp, false);
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