js键盘弹起

document.addEventListener('keyup', function(event) {
    console.log('Key pressed: ' + event.key);
});

document.addEventListener('DOMContentLoaded', function() {
    document.body.addEventListener('keyup', function(event) {
        console.log('Key pressed: ' + event.key);
    });
});

document.body.removeEventListener('keyup', handleKeyUp);
document.body.addEventListener('keyup', handleKeyUp);

function handleKeyUp(event) {
    console.log('Key pressed: ' + event.key);
}

function addEvent(element, event, handler) {
    if (element.addEventListener) {
        element.addEventListener(event, handler, false);
    } else if (element.attachEvent) {
        element.attachEvent('on' + event, handler);
    } else {
        element['on' + event] = handler;
    }
}

addEvent(document.body, 'keyup', function(event) {
    console.log('Key pressed: ' + event.key);
});