如何向现有JavaScript函数添加JavaScript键盘快捷键？ [英] How can I add a JavaScript keyboard shortcut to an existing JavaScript Function?

问题描述

这是我的代码：

function pauseSound() {
    var pauseSound = document.getElementById("backgroundMusic");
    pauseSound.pause(); 
}

我想为此代码添加键盘快捷键，我该怎么办这样，当单击按钮时也可以执行该功能吗？

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?

试图添加一个else if语句，但它不起作用，有什么想法？

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

// define a handler
function doc_keyUp(e) {

    // this would test for whichever key is 40 and the ctrl key at the same time
    if (e.ctrlKey && e.keyCode == 40) {
        // call your function to do the thing
        pauseSound();
    }
}
// register the handler 
document.addEventListener('keyup', doc_keyUp, false);

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