How to make this function add the class after scrolling 100vh?
Currently it adds the class after 850px.
$("document").ready(function($){
var nav = $('#verschwinden');
$(window).scroll(function () {
if ($(this).scrollTop() > 850) {
nav.addClass("doch");
} else {
nav.removeClass("doch");
}
});
});
100vh in jQuery is simple as $(window).height() while in pure JavaScript is window.innerHeight or a bit more longer.
jsFiddle demo
jQuery(function($) {
var $nav = $('#verschwinden');
var $win = $(window);
var winH = $win.height(); // Get the window height.
$win.on("scroll", function () {
if ($(this).scrollTop() > winH ) {
$nav.addClass("doch");
} else {
$nav.removeClass("doch");
}
}).on("resize", function(){ // If the user resizes the window
winH = $(this).height(); // you'll need the new height value
});
});
you can also make the if part a bit shorter by simply using:
$nav.toggleClass("doch", $(this).scrollTop() > winH );
demo
Related
I am using the following to add and remove CSS classes based on the current scroll position:
$(function() {
var header = $(".grid-bar");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 400) {
header.addClass("move");
} else {
header.removeClass("move");
}
});
});
But I want to disable the addition and removal of the CSS classes on a screen size smaller than 800px.
I have tried wrapping the code in a resize function but after I do so, it stops responding at all:
$(window).resize(function(){
if ($(window).width() => 800){
var header = $(".grid-bar");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 400) {
header.addClass("move");
} else {
header.removeClass("move");
}
});
}
});
As others have mentioned, you have an improper operator for "greater than or equal to". The following is incorrect:
if ($(window).width() => 800) {
// ^^ this operator is wrong
if ($(window).width() >= 800) {
// ^^ it should be like this
Also, you need to bind and unbind the scroll handler whenever the screen size changes. You will need to keep track of whether or not the scroll handler is bound or not. Here is what that looks like:
const $window = $(window);
const $header = $(".grid-bar");
let isBound = false;
const scrollHandler = function() {
const scroll = $window.scrollTop();
if (scroll >= 400) {
header.addClass("move");
} else {
header.removeClass("move");
}
}
$(window).resize(function(){
if ($window.width() >= 800) {
if (!isBound) {
$window.on('scroll', scrollHandler);
isBound = true;
}
} else if (isBound) {
$window.off('scroll', scrollHandler);
isBound = false;
}
});
$window.trigger('resize');
Here is a fiddle: https://jsfiddle.net/1mru359x/5/
I want to stop scroll after a dynamic div reaches its end. This div will be holding dynamic content so the size never stays the same. I know how to lock in position when scroll hits a pre-defined height, but not sure how to do it when the hight is constantly changing. here's what i'm using for my standard locking scroll when it hits specific point:
var profile_rc = $("#profile-rc");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll >= 285) {
profile_rc.addClass("p-right-column");
} else {
profile_rc.removeClass("p-right-column");
}
});
Looks like you are using jQuery, the following 2 examples might help.
Detecting dynamic height of screen
<script>
$(function(){
var windowHeight = $(window).height();
$(window).resize(function() {
windowHeight = $(window).height();
console.log(windowHeight);
});
});
<script>
Detecting dynamic height of a div
<script>
$(function(){
var divHeight = $('#your-div-id').css("height");
$( window ).on("resize", function() {
divHeight = $('#your-div-id').css("height");
console.log(divHeight);
});
});
</script>
I got it to work doing this:
$(window).scroll(function() {
var divHeight = $('#farleft-cont').outerheight(true);
var ycbc = $('#target-div');
var scroll = $(window).scrollTop();
if (scroll >= divHeight) {
ycbc.addClass("target-div-fixed");
} else {
ycbc.removeClass("target-div-fixed");
}
});
Im new in Javascript, Im sorry for the armature questions
i have a fadein code only for one class that works perfect, here is the code:
jQuery(document).ready(function($) {
var fadeinbig = function() {
var scroll = $(window).scrollTop() + $(window).height(),
offset = $(window).height() / 2;
$('.fadeinbig').each(function(){
if (scroll-offset > $(this).position().top && $(this).hasClass('fadeinbig')) {
$(this).removeClass('fadeinbig');
}
});
}
fadeinbig();
$(window).on('scroll resize', fadeinbig);
I would like to add some more classes like, fadeinleft, fadeinright, etc.
like this:
jQuery(document).ready(function($) {
var fadeinbig = function() {
var scroll = $(window).scrollTop() + $(window).height(),
offset = $(window).height() / 2;
$('.fadeinbig').each(function(){
if (scroll-offset > $(this).position().top && $(this).hasClass('fadeinbig')) {
$(this).removeClass('fadeinbig');
}
});
}
fadeinbig();
$(window).on('scroll resize', fadeinbig);
});
jQuery(document).ready(function($) {
var faidinbottom = function() {
var scroll = $(window).scrollTop() + $(window).height(),
offset = $(window).height() / 2;
$('.faidinbottom').each(function(){
if (scroll-offset > $(this).position().top && $(this).hasClass('faidinbottom')) {
$(this).removeClass('faidinbottom');
}
});
}
faidinbottom();
$(window).on('scroll resize', faidinbottom);
});
jQuery(document).ready(function($) {
var faidintop = function() {
var scroll = $(window).scrollTop() + $(window).height(),
offset = $(window).height() / 2;
$('.faidintop').each(function(){
if (scroll-offset > $(this).position().top && $(this).hasClass('faidintop')) {
$(this).removeClass('faidintop');
}
});
}
faidintop();
$(window).on('scroll resize', faidintop);
If you ask me why my code is with removeClass, not with addClass, it is becouse it is easer for me to manipulate whit my content, without changing the base css styles of my website. I just add some classes "faidintop, faidinbottom etc." to the style sheet, then to the class of a div, and the magic happens.
I will be very grateful if some one could help me whit this, or at least give me some directions, how to do it the right way.
I have a little problem with a jQuery function. I need to add a margin to some element when the window.width is < 580px and i need to remove it when the window.width is larger. Here is the problem, the first part of the function work well, not the second.
var Wwidth= $(window).width();
if ( Wwidth < 582) {
$( window ).resize(function() {
var nWwidth=$( document ).width();
var marginL = (nWwidth - 292)/2;
$('.hub-item').css('margin-left',marginL +'px');
});
}
else {
$( window ).resize(function() {
$('.hub-item').css('margin-left','0px');
});
}
I have no mystakes in the console but the margin are not to 0.
Thanks u all!
EDIT :
Correct code :
$(window).resize(function() {
var Wwidth= $(this).width();
if (Wwidth < 582) {
var nWwidth=$( window ).width();
var marginL = (nWwidth - 292)/2;
$('.hub-item').css('margin-left',marginL +'px');
}
else {
$('.hub-item').css('margin-left','0px');
}
});
Thanks all!
You need to put your if statement within the $(window).resize() function, and recalculate Wwidth every time:
$(window).resize(function() {
var Wwidth = $(this).width();
if (Wwidth < 582) {
...
}
else {
...
}
});
I want to run the following function when screen width is equal or above 1024px
//Fade elements on Scroll
var divs = $('.fader');
$(window).on('scroll', function() {
var st = $(this).scrollTop();
divs.css({ 'opacity' : (1 - st/300) });
});
I tried to add if($(window).width() >= 1024){
So its now looks like this:
var divs = $('.fader');
if($(window).width() >= 1024){
$(window).on('scroll', function() {
var st = $(this).scrollTop();
divs.css({ 'opacity' : (1 - st/300) });
});
}
But it did not work, what I am doing wrong?
I am not sure but you can try. I think You have use resize event
$(window).on('resize', function () {
var divs = $('.fader');
if ($(window).width() >= 1024) {
$(window).on('scroll', function () {
var st = $(this).scrollTop();
divs.css({
'opacity': (1 - st / 300)
});
});
} else {
$(window).off('scroll');
}
}).trigger('resize');