window.document.onkeydown = e => {
        //console.log(e);
        if(e.ctrlKey && e.key === 'c'){
            console.log('copy');
        }
        if(e.ctrlKey && e.key === 'v'){
            console.log('paste');
        }

        switch (e.key) {
            case '1':
                break
            case 'Enter':
                break
            default: return
        }
    }