I am using the following code to detect when a user scrolls to the bottom of the page:
$(window).on("scroll", function() {
var scrollHeight = $(document).height();
var scrollPosition = $(window).height() + $(window).scrollTop();
if ((scrollHeight - scrollPosition) / scrollHeight === 0) {
// when scroll to bottom of the page
}
});
However, instead of telling me when I scroll to the bottom of the page, the if statement becomes true when I scroll all the way to the top. Why is this happening? Thanks so much. The reason I need to detect when the user scrolls to the bottom is so that I can dynamically load content from a server. I don't think this matter, but I am using Flask on the backend and the malfunctioning page is rendered as a template with jinja-2.
_onScrollHandler(event){
if(event.target.scrollHeight - event.target.scrollTop === event.target.clientHeight){
console.log('Reacehd Bottom')
}
}
Call this function when onscroll event occurs and from event arg you can get the scrollHeight scrollTop and clientheight.
Please try with this one
Related
How do you detect top of an element is near of the bottom of browser with jQuery?
when I scroll down, if bottom of browser reach to top of an specal div,it alert me, and when I scroll up and bottom of browser reach to the top of that div,alert me again?
something like this website when scroll it down or up. (jquery effect)
I think you looking for this. you can do this using below code.
var ScrollBottom = 100;
if ($(window).scrollTop() + $(window).height() >
$(document).height() - ScrollBottom) {
// your ajax call here
}
I'm working on ajax infinite scroll. I have below code to make ajax request after scrolling at end,
$(window).scroll(function(){
if($(window).scrollTop() >= ($(document).height() - $(window).height())){
loadlist();
}
});
But it fires when scrolled at end (including footer.). But I want it fired when the footer is just starting to show while scrolling (footer height is 300px).
I researched and tried following code,
$(window).scroll(function(){
if($(window).scrollTop() >= ($(document).height() - $(window).height()) - 300){ // 300px footer height
loadlist();
}
});
But It seems dirty. the function gets fired too many times when scrolling. any good solutions ?
I'd take the approach of triggering the behaviour when your footer element first scrolls into view.
var $footer = $("#my-footer");
$(window).scroll( function() {
if (isScrolledIntoView($footer) ) loadList();
});
See Check if element is visible after scrolling to get the code for isScrolledIntoView().
I'm using a "universal" piece of js that should detect if the user has scrolled to the bottom of the document:
$(window).scroll(function() {
if ($(window).scrollTop() == $(document).height() - $(window).height()) {
//ajax code here
}
});
As the user scrolls, new content should load via the ajax call.
I would have expected the code to fire when I scroll DOWN, but the condition is actually firing when I scroll back to the TOP of the page, so it's basically doing the opposite of what it's "supposed" to do.
I've seen this solution being used in many examples, such as:
https://stackoverflow.com/a/17078097/1623095
My debugging messages:
console.log($(window).scrollTop());
console.log($(document).height());
console.log($(window).height());
These output when scrolling to the top:
0
1956
1956
And bottom:
961
1956
1956
The only plugin being loaded in my page is jquery (1.10.0.min), due to the nature of the project, I cannot link to the page.
Thoroughly confused by the dom behavior here.
I solved this some time before for someone else.
Have a look here:
Code
$(window).scroll(function () {
//- 10 = desired pixel distance from the bottom of the page while scrolling)
if ($(window).scrollTop() >= $(document).height() - $(window).height() - 10) {
var box = $("#scrollbox");
//Just append some content here
box.html(box.html() + "<br />fa");
}
});
Fiddle
Just place your ajax code where I extended the content with simple html breaks
I have a code
var scroll = $(window).scrollTop();
$(window).on("scroll", function () {
scroll+=100;
$(window).scrollTop(scroll); //*
})
But this code scroll the window with a loop to the bottom. how to make something like throttle in order to avoid the recursion ?
The goal: i have the 404 page and iframe with index page below of 404. and when user try to scroll 404 page - index pages scroll to top with doubled speed
To Solve your issue I took a slightly different approach, upon scroll I am scrolling to the Index location only once.
var $window = $(window);
var indexLocation = 505;
$window.one("scroll", function(e){
if ($window.scrollTop() < indexLocation){
$("body").animate({scrollTop: indexLocation});
}
});
Also you can check it out here: http://jsfiddle.net/jsJJK/1/
I don't understand why this doesn't work. Explanation will be appreciated.
var scrollTop = $(window).scrollTop();
var height = $(window).height();
if (scrollTop === height ) {
alert("end!");
}
http://jsfiddle.net/Zasxe/
$(window).height() gives you the size of the user's viewport, not the size of the total document, which is what you most likely want. To find if the user has reached the end of the document, you've got to find the document's size, by $(document).height().
Furthermore, to find if a user's reached the end of the document, using jQuery, you need to capture the scroll event, and see if the user's reached the bottom:
$(window).scroll(function () {
if ($(window).scrollTop() + $(window).height() === $(document).height()) {
alert("end!");
}
});
There's no event handler. That code only gets run once, when the page loads.
$(document).scroll(function () {
// Your code here
});
Be aware that the code will run every time you scroll, so don't make it to heavy.
And as someone else said, there were a number of other things wrong with the code - but start with putting the handler in.