JAVASCRIPT

js scroll to bottom

window.scrollTo(0,document.body.scrollHeight);

get scroll bottom position js

window.onscroll = function(ev) {
    if ((window.innerHeight + window.scrollY) >= document.body.offsetHeight) {
        // you're at the bottom of the page
    }
};

scroll value bottom js

window.onscroll = function() {
    let d = document.documentElement;
    let offset = d.scrollTop + window.innerHeight;
    let height = d.offsetHeight;

    console.log('offset = ' + offset);
    console.log('height = ' + height);

    if (offset >= height) {
        console.log('At the bottom');
    }
};

js scroll to bottom

var notChangedStepsCount = 0;
var scrollInterval = setInterval(function() {
    var element = document.querySelector(".element-selector");
    if (element) { 
        // element found
        clearInterval(scrollInterval);
        element.scrollIntoView();
    } else if((document.documentElement.scrollTop + window.innerHeight) != document.documentElement.scrollHeight) { 
        // no element -> scrolling
        notChangedStepsCount = 0;
        document.documentElement.scrollTop = document.documentElement.scrollHeight;
    } else if (notChangedStepsCount > 20) { 
        // no more space to scroll
        clearInterval(scrollInterval);
    } else {
        // waiting for possible extension (autoload) of the page
        notChangedStepsCount++;
    }
}, 50);

js scroll to bottom

function scrollToBottom() {
  const scrollingElement = document.scrollingElement || document.body
  scrollingElement.scrollTop = scrollingElement.scrollHeight
}