Develop Reference

Is there a way for changing different images at different scrolling point?

I'm trying to change one image at a time when I'm scrolling through the page.
This code actually changes all images classes when we get to that point of the scroll.
Is there any other way we can change images individually when scrolling?
Thank you.
jQuery(function($) {
var show = $(".show");
var hide = $(".hide");
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if($(window).scrollTop() >= 500){
show.removeClass('show').addClass("hide");
hide.removeClass('hide').addClass("show");
} else {
show.removeClass("hide").addClass('show');
hide.removeClass('show').addClass("hide");
}
});
});

Since you're checking the scroll position of window and hiding/showing, this will hide/show all elements with the specified class name.
To achieve your purpose, add css position: relative to all images (if no position is specified already),
Then, iterate through each image as follows...
jQuery(function($) {
//var show = $(".show");
//var hide = $(".hide");
$(window).scroll(function() {
/*var scroll = $(window).scrollTop();
if($(window).scrollTop() >= 500){
show.removeClass('show').addClass("hide");
hide.removeClass('hide').addClass("show");
} else {
show.removeClass("hide").addClass('show');
hide.removeClass('show').addClass("hide");
}*/
var images = $('img');//or any other selector
$.each(images, function () {
if($(this).offset().top <= -500) {
$(this).hide();
}
else {
$(this).show();
}
});
});
});

Can I reset a jQuery sticky navbar function?

I'm new here and I'm facing a little problem with a jQuery script I'm using to change my CSS when my sticky navbar scrolls over a certain section.
First, I'm using one class called ".stickychange", which is the trigger for the jQuery function. On this section, I'm using a background-image (one picture I've taken personally), and I want my white navbar to become transparent black when it's over this said section. And it's working like a charm. But after this section, I have a white section and I want my navbar to take its default style, but it doesn't.
If I'm scrolling back to the top, it's taking its default settings, but if I'm scrolling past the .stickychange, it would stay with the tweaked CSS styles.
Do you know how to reset a function, or at least, stop it when it reaches a certain point?
Here's the code, it's a basic code if you wanna change styles on elements while scrolling :
var scroll_start = 0;
var startchange = $(".stickychange");
var offset = startchange.offset();
if (startchange) {
$(document).scroll(function () {
scroll_start = $(this).scrollTop();
if (scroll_start > offset.top) {
$("#menu_top").css('background-color', 'rgba(0,0,0,0.5)');
$("#menu_top").css('transition', 'all 0.2s ease-in');
$("#menu_top a").addClass("stickyspecial");
$("#menu_top h2").addClass("stickyname");
} else {
$('#menu_top').css('background-color', '#fff');
$('#menu_top a').removeClass("stickyspecial");
$('#menu_top h2').removeClass("stickyname");
}
});
}
Thanks, guys in advance! :)

Get the height of the div and add this to your if.
var scroll_start = 0;
var startchange = $(".stickychange");
var offset = startchange.offset();
// Get the height with padding and border
// You could use .height() if you just want the height of the div.
var endchange = startchange.outerHeight();
if (startchange) {
$(document).scroll(function () {
scroll_start = $(this).scrollTop();
if (scroll_start > offset.top && scroll_start < offset.top + endchange) { //<- Add it here
$("#menu_top").css('background-color', 'rgba(0,0,0,0.5)');
$("#menu_top").css('transition', 'all 0.2s ease-in');
$("#menu_top a").addClass("stickyspecial");
$("#menu_top h2").addClass("stickyname");
} else {
$('#menu_top').css('background-color', '#fff');
$('#menu_top a').removeClass("stickyspecial");
$('#menu_top h2').removeClass("stickyname");
}
});
}
If you're using margin on the div and want it to be applied, use .outerHeight(true).

How to prevent a link outside a function from triggering it on scroll

This seems like an easy fix, but can't seem to figure it out. I have a table that spawns a fixed header whenever you scroll on it. It's working well, however, an unconnected link near the top of this page, via jquery, scrolls the cursor to the bottom of the page til it hits an anchor. As a result, it quickly moves over the table, spawning the fixed menu, then after reaching the anchor, the fixed menu awkwardly sits there for a second or two, then disappears.
I'm trying to prevent that by disabling the function on click of the link. I've tried e.preventDefault (), but no joy. Here's the fiddle and code (so looking to prevent the fixed "Header / Description" row when you click the link).
Fiddle
// top edge of table
var element_menu_hdr = $(".row-1").offset().top;
var element_menu_end_check = $(".row-12").offset().top;
$(window).on("scroll", function fixmenu() {
var y_scroll_pos = window.pageYOffset;
var scroll_menu_hdr = element_menu_hdr;
var scroll_menu_end_check = element_menu_end_check;
if(y_scroll_pos >= scroll_menu_hdr) {
if($('.affix').length === 0){
$('.row-1.odd').wrap('<table class="tablemain affix view"></table>');
}
} else if (y_scroll_pos < scroll_menu_hdr) {
$('.tablemain.affix.view').contents().unwrap();
} else {
}
});
// bottom edge of table
var element_menu_end = $(".row-12").offset().top;
$(window).on("scroll", function fixmenubtm() {
var y_scroll_pos2 = window.pageYOffset;
var scroll_menu_end = element_menu_end;
if(y_scroll_pos2 > scroll_menu_end) {
$('.tablemain.affix.view tbody').contents().unwrap();
} else {
}
var myVar = y_scroll_pos2;
console.log(myVar, "y_scroll_pos2");
var myVar2 = element_menu_end;
console.log(myVar2, "element_menu_end");
});
jQuery(document).ready(function($) {
$(".scroll").click(function(event){
event.preventDefault();
$('html,body').animate({scrollTop:$(this.hash).offset().top}, 500);
});
});

Fade in on scroll and fade out on scroll

I'm new to this stuff.
I'm using this to make a div appear on scroll and to make it disappear when I scroll further.
It's working pretty good. It fade's out when I pass 1750. But on page load the div is already there. It should appear when I scroll past 1500.
What I need is the div be visible between 1500 and 1750. Hope you can help!
<script type="text/javascript">
$(document).scroll(function () {
var x = $(this).scrollTop();
if (x > 1500) {
$('#form_1_container').fadeIn(150);
} if (x > 1750) {
$('#form_1_container').fadeOut(150);
}
});
</script>
This is the site = http://www.stilld.nl/brrreuk/
You can see if you scroll, that the div appears and disappears. But then it start to pulse...
I'm using display=none on my div.

You can try this
$(document).scroll(function () {
var x = $(this).scrollTop();
if (x > 1500 && x < 1750) {
$('#form_1_container').stop().fadeIn(150);
}
else{
$('#form_1_container').stop().fadeOut(150);
}
});

Stop scrolling page, scroll div

I'm creating this landing page: http://tag4share.com/landing/#
Where is located the two galaxy s3 (one white with "Organizador" label on it and a black with "Participante" label), I want to stop scrolling the page and automatically start scrolling the content inside the mobile (an iFrame, div, anything).
Is it possible?
Basically I want to "focus" the scrolling inside a div (and make it work even if the cursor isn't hovering it). Or animate while scrolling without scrolling the body.
Example: http://www.google.com/nexus/5/
On the "Everything you need to capture the moments that matter." part.
My attempt:
var lastScroll;
var currentScroll = $(window).scrollTop();
$(window).scroll(function() {
lastScroll = currentScroll;
currentScroll = $(window).scrollTop();
if($(window).scrollTop() >= 2024 && $(window).scrollTop() < 2500)
{
var difference = currentScroll - lastScroll;
$(".main").css({"margin-top":"-="+currentScroll});
}
});
I've tried to move the main div along with scrolling. It works but it looks really strange (keeps shaking).
Thanks!

I've just tidied up your code a tad, fixed indentation etc.
As for actually scrolling your div when you hit the position, use animate to actually mimic the scrolling effect, once you know you have reached the bottom, you can put another if statement within the scroll function to stop resetting the scroll position.
var lastScroll;
var scrollPosition = $(window).scrollTop();
var reachedBottom = false;
var phonePositionTop = $('#phoneContainerID').position().top;
var phonePositionBottom = phonePositionTop + $('#phoneContainerID').height();
$(window).scroll(function() {
if(scrollPosition >= phonePositionTop && scrollPosition < phonePositionBottom && reachedBottom == false){
var difference = currentScroll - lastScroll;
// Keep resetting scroll to the phoneContainerTop position
$(".main").css({"margin-top": phonePositionTop});
var scrollLimit = -100;
if ($('#phoneContainerID').position().top < scrollLimit) {
//Once the scroll limit is less than -100 (scrolled up 100 pixels)
// Disable our 'pause' effect, and continue
reachedBottom = true;
}
}
});
I haven't tested this, however I was just giving you an idea of where to go from here.
I hope I have helped a little!