Track user inactivity on a web page using javascript

inactivity.js

const inactivityTime = () => {
    let time;
    const resetTimer = () => {
        clearTimeout(time);
        time = setTimeout(() => {
            const resposeTimeout = setTimeout(() => {
                // log out user if they don't respond to warning after 5 minutes.
                logOut();
            }, 300000)
            // Show warning after 20 minutes of no activity.
            const button = document.createElement('button');
            button.dataset.toggle = 'modal';
            button.dataset.target = '#confluenceMainModal'
            document.body.appendChild(button);
            button.click();
            const header = document.getElementById('confluenceModalHeader');
            const body = document.getElementById('confluenceModalBody');
            header.innerHTML = `<h5 class="modal-title">Inactive</h5>`;

            body.innerHTML = `You were inactive for 20 minutes, would you like to extend your session?
                            <div class="modal-footer">
                                <button type="button" title="Close" class="btn btn-dark log-out-user" data-dismiss="modal">Log Out</button>
                                <button type="button" title="Continue" class="btn btn-primary extend-user-session" data-dismiss="modal">Continue</button>
                            </div>`
            document.body.removeChild(button);
            Array.from(document.getElementsByClassName('log-out-user')).forEach(e => {
                e.addEventListener('click', () => {
                    logOut();
                })
            })
            Array.from(document.getElementsByClassName('extend-user-session')).forEach(e => {
                e.addEventListener('click', () => {
                    clearTimeout(resposeTimeout);
                    resetTimer;
                })
            });
        }, 1200000);
    }
    window.onload = resetTimer;
    document.onmousemove = resetTimer;
    document.onkeypress = resetTimer;
};