I'm now developing a website for mindmap manipulation, and now want to make some hotkeys to make operations better.

In XMind, `Ctrl+1` stands for adding a label with number 1, but I found the keydown event cannot capture the event. Instead, `Ctrl+1` leads to activating the first Chrome tab, even though I call the `e.preventDefault()`.

So the priority of the chrome browser is the most significant so cannot be intercepted. If I want to make the `Ctrl+1` hotkey act as expect, is there any solution?

```
document.addEventListener('keydown', function(e) {
    if (e.ctrlKey && e.code === 'Digit1') {
        // ...
        e.preventDefault()
    }
})

```