Oxygenados Com

                  document.addEventListener('DOMContentLoaded', function(e) {
    document.addEventListener('scroll', function(e) {
        let documentHeight = document.body.scrollHeight;
        let currentScroll = window.scrollY + window.innerHeight;
        // When the user is [modifier]px from the bottom, fire the event.
        let modifier = 200; 
        if(currentScroll + modifier > documentHeight) {
            console.log('You are at the bottom!')
        }
    })
})