Responsive sliding on click - javascript

You guys already helped me out a lot, I hope you can help me with this question to.
This is my website so far: http://stilld.nl/test/
Everything is working pretty good (need to do a lot of tidying up in my code though).
Please scroll down to the portfolio part. Click an item and the details appear beneath the portfolio. PERFECT!
PROBLEM: size you browser down to mobile format. Click a portfolio item. it doesn't scroll down far enough, because my portfolio items are now displayed beneath each other. They take up much more vertical space now!
WHAT I WANT: Is there a way to make code responsive? So something like: if screen size is smaller then 600 px THEN slide down 500px on click.
This is the code I'm using right now:
$(document).ready(function(){
$(".portfolio").click(function () {
if ($('#'+$(this).attr('target')).is(':visible')){
$('#'+$(this).attr('target')).slideUp();
} else {
$('.description').slideUp();
$('#'+$(this).attr('target')).slideDown();
$('html, body').animate({scrollTop: $('#targetWrapper').offset().top + 50 }, 600);
}
});
$(".close").click(function () {
$('.description').slideUp();
$('html, body').animate({scrollTop: $('#p_img').offset().top }, 600);
});
});

You should calculate the offset with either jQuery's .offset() or jQuery's .position().
What you could do for example is:
$(".portfolio").click(function () {
var offSetTarget = $('.description').position().top;
var scrollExtra = 0;
$('body').animate({
scrollTop: offSetTarget + scrollExtra
}, 600);
});
Where you can determine how much extra you want to scroll.
For example if you want to scroll just above the .portfolio, you can add: scrollExtra = -10; . Or if you want to scroll halfway, you could do: scrollExtra = $('.portfolio').height()/2;
I prepared a working example for you HERE.
To prove that it actually works, you can play with the window size here.
I hope that answers your question. Good luck!
Update
To implement it into your example, we would have to determine where to scroll to.
For illustrational purposes, I have chosen to do this with the divs #alldescriptions and #port_img1 in this example.
The jQuery for your website would then be:
$(document).ready(function() {
$(".portfolio").click(function () {
var offSetTarget = $('#alldescriptions').position().top;
var scrollExtra = 0;
if ($('#'+$(this).attr('target')).is(':visible')){
$('#'+$(this).attr('target')).slideUp();
} else {
$('.description').slideUp();
$('#'+$(this).attr('target')).slideDown();
$('body').animate({scrollTop: offSetTarget + scrollExtra }, 600);
}
});
$(".close").click(function () {
$('.description').slideUp();
$('body').animate({scrollTop: $('#port_img1').position().top }, 600);
});
});
Again, mind you that you can alter the exact scrolling location by giving var scrollExtra a different value.
You can find an implementation of this code here and a live fullscreen example here.
Please play around with the window size again so you can see it actually works with every screensize. Good luck!

You could detect the inner width of the screen and then set variables for the offset.
if(window.innerWidth <= 600) {
var offSet = 500;}
else{
var offSet = 600;}
Then replace this in your code:
$('html, body').animate({scrollTop: $('#targetWrapper').offset().top + 50 }, offSet);
BUT.... if you want to simplify your code, you could use CSS Transitions. Then just use jQuery to add and remove a class that triggers the Transition, using media querys to change the offset. It would also have less overhead.

Related

How to scroll with jquery animate

I'm trying to make some buttons work here.
http://www.sepulturaimpex.ro/portofoliu is the website.
When i click left/right buttons i'd like to move from project to project exactly
The images are random width.
How can i achieve that?
Here is the script i'm using.
$(document).ready(function () {
$(".prev").click(function () {
$(".p_horizontal_wrap").animate({
scrollLeft: "-=700"
})
}), $(".next").click(function () {
$(".p_horizontal_wrap").animate({
scrollLeft: "+=700"
})
})
}),
The answer is in your question; if the images are random width, then you cannot scroll w/ a fixed width
I think your best bet is to look ahead and find the x position of the next object, then scroll to that. Depending on your markup, you may need to keep track of the object index you're scrolling into view.
Your next button (and your next/prev could be the same) would look like this:
$(".next").click(function() {
var targ = /** find out the next item to be shown **/
var left = $(targ).position().left;
$(".p_horizontal_wrap").animate({
scrollLeft: left
});
});

Background image zoomed in while using Parallax.js jQuery plugin

I added the parallax.js jQuery plugin and the effect works, but not properly. The background is zoomed in and the image is glitchy on scroll. I added additional variables listed in the documentation to fix those issues, and they work as expected. However, unexpectedly they also break my content which is created dynamically using JS in the '#sections' div, an empty div populated with a JavaScript object?
function parallaxBackground (){
var yPos = -(($window.scrollTop() - $this.offset().top) / 5);// Scroll speed
var coords = '1% '+ yPos + 'px';// Background position
$this.css({ backgroundPosition: coords });// Move the background
}
parallaxBackground();//Call parallaxBackground function
Any idea why this function would erase HTML content created using JS? The rest of the JS still works, its just the '#sections' div that stops working. Scroll, reveal, and hover effects are still intact. Here is a link to the code.
https://gist.github.com/flyspaceage/075dcf3a6d6bd65edf0f456036eb9bd8
Please read comment by FlySpaceAge for more info.
I ended up changing the script a bit and adding some variables from the parallax documentation. While this solution did fix the functionality, the background image is now zoomed in. While not perfect, this function did fix the initial problem I posted.
(function($){
$(document).ready(function(){
$('#sections').on('click', '.back-to-top', scrollToTop);
$('#jump-menu li').click(scrollToAnchor);
$('.parallax-window').parallax({imageSrc: '../images/background.png'});
});
function scrollToTop(event){
event.preventDefault();
$('html, body').animate({
scrollTop: 0
}, 500);
}
function scrollToAnchor(event){
event.preventDefault();
var target = $(this).attr('rel');
var offset = $(target).offset();
$('html, body').animate({
scrollTop: offset.top - 270
}, 500);
}
/* PARALLAX functionality*/
function parallaxBackground (){
var parallaxWidth = Math.max($(window).width() * 1, 1 ) | 0;
$('.parallax-window').width(parallaxWidth);
}
parallaxBackground();
})(jQuery);

An Issue With jQuery and Safari

I am attempting to create a navigation bar that slides up and off the screen when a user scrolls down, and then scrolls back down when a user stops scrolling / scrolls up. Below is a snippet of my script and a jsfiddle:
$(document).ready(function() {
var position = $(window).scrollTop();
$(window).scroll(function() {
var scroll = $(window).scrollTop();
if (scroll > position) {
$('.nav').addClass('active');
} else {
$('.nav').removeClass('active');
}
position = scroll;
});
});
https://jsfiddle.net/z2uc89sL/
Coupled with my CSS this works fine in all the browsers I have tested it in except for Safari (I'm running version 9.0.2 on a Mac). The problem that is occurring is that when you hit the top of page and there is no further room to scroll up, the nav gets hidden again by re sliding up (as though the user was actually scrolling down again rather than butting up to the top of the page). The opposite is happening at the bottom of the page too.
If you look at the fiddle in Safari you will see the issue I am talking about. If you look at the fiddle in any other browser you'll see what I'm trying to achieve.
This is because of bouncing effect in safari.
You can disable it with some extensions like iNoBounce.
Or simply compare current position like this.
if (scroll > position && position > 0) {
$('.nav').addClass('active');
} else if (position < $(window).height()){
$('.nav').removeClass('active');
}
Below i tried to provide you two different answers, First solution is related to your .nav class while Second is simulation of same functionality as a function. So, it could be reused.
var el = $(".nav");
$(window).scroll(function() {
el.addClass('active');
clearTimeout($.data(this, "scrollCheck"));
$.data(this, "scrollCheck", setTimeout(function() {
el.removeClass('active');
}, 250));
});
/*
* As a Function
*/
function scrollFunc(el) {
var el = el;
$(window).scroll(function() {
el.addClass('active');
clearTimeout($.data(this, "scrollCheck"));
$.data(this, "scrollCheck", setTimeout(function() {
el.removeClass('active');
}, 250));
});
}
scrollFunc($('nav'));
To see the results online, Please have a look at my fiddle https://jsfiddle.net/yeoman/g19nejfu/1/ i forked your question and update it with working answer.
I would love to explain about what's going on but actually this question is somehow answered already. So, for that purpose, i will share some useful links. One should check them out to understand it.
jQuery scroll() detect when user stops scrolling
http://gabrieleromanato.name/jquery-check-if-users-stop-scrolling/
Hope that my answer will you. Thanks, Cheers!

jQuery Animation is delayed on scroll

I have it set to a div's width increases when I scroll past it with the following code. Now I do this same thing except with .fadeIn() and it works fine. But when I use the .animate() i'll scroll to that location and nothing will happen, but like randomly 30-40 seconds later it will just decide to animate without me even touching/moving anything. Any reason why that is?
HTML
<div>
2500px of CONTENT
</div>
<div class="statbar"></div>
CSS
.statbar {
width:100px;
height:30px;
background-color:#ff4200;
}
jQuery
$(document).scroll(function () {
var y = $(this).scrollTop();
if (y > 2500) {
$('.statbar').animate({width:'200px'}, 300);
} else {
$('.statbar').animate({width:'10px'}, 300);
}
});
Here's a JSFiddle example: https://jsfiddle.net/kr4yeyw3/2/
If you wait like 30 seconds at the div, you'll see the animation will take place (need it to happen instantly like the fadeIn() does.
EDIT: It works when I change those 300 to zeros, but it doesn't animate! Just changes width instantly without "sliding" it over.
EDIT2: Finally figured it out for anyone who one day scrolls across this page looking for a similar answer.
Adding clearQueue(), stop() and easing seemed to do the trick
$('.statbar').clearQueue().stop().animate({width:'75%'}, { "duration": 400, "easing": "linear" });
clearQueue or Stop will do fix the animation, but it doesn't address the real problem with your code. In your else statement, which is hit like 2000 times as you scroll to the bottom of the page, you are starting an animation with a duration of 400 milliseconds.
jQuery animate puts all animations into a queue and calls them one after the other so it creates a huge delay before the animation you actually want to see. api.jquery.com/animate/
Here's how I think you should rework your code:
var isExpanded = false;
$(document).scroll(function () {
var y = $(this).scrollTop();
if (y > 2500) {
$('.statbar').animate({width:'200px'}, 300);
isExpanded = true;
} else if(isExpanded) {
$('.statbar').animate({width:'10px'}, 300);
isExpanded = false;
}
});
Here I use a flag to determine if the animation needs to be run and just toggle it as we switch display modes.

Play through pinned elements in superscrollorama

I am building a Parallax website using SuperScrollorama which have some animation frame by frame using jquery and css3...
But after ending up doing so i am stuck in a problem, i am trying to navigate the pages using some scroll plugin...
I have tried Basic jquery using scrollTop event, using Jquery ScrollTo and using Tween Lite ScrollTo plugin to navigate through pages but nothing seems to work...
The issue i get after goggling it is if pages are pinned together as position:fixed; and pages doesnot scroll to that position and stuck between...
With Jquery ScrollTo, my code:-
$('.menus a').click(function(e){
e.preventDefault();
$.scrollTo(this.hash, 2000, {
easing:'easeInOutExpo',
offset:3000,
axis:'y',
queue:true
});
});
With basic scrollTop jquery, my code:-
$('a').bind('click',function(event){
var $anchor = $(this);
$('html, body').stop().animate({
scrollTop: $($anchor.attr('href')).offset().top
}, 1500,'easeInOutExpo');
event.preventDefault();
});
Currently my code works like this:- http://jsfiddle.net/tFPp3/6/
As you can see in my demo, the scroll stuck between before reaching the exact position through hash...
What is the solution if i have to play through the pinned elements in Superscrollorama?
You'll have to do 2 animations : one to reach the ancher offset and then, after superscrollorama added new element for animation and recalculate the document height, do the second animation to reach the correct key frame on that page (that you fixed at offset 3000 of that section).
$(function(){
var hashes = [];
$('.menus a').each(function(){
hashes.push(this.hash);
});
console.log('hashes:', hashes);
$('.menus a').click(function(e){
e.preventDefault();
var h = this.hash;
var pageTop = $(h).offset()['top'];
console.log('pageTop=',pageTop);
$.scrollTo( pageTop+1, 2000, {
easing:'easeInExpo',
axis:'y',
onAfter:function(){
setTimeout(function(){
console.log('hashes:', hashes);
var id = hashes.indexOf(h);
console.log('hashes['+(id+1)+']=', hashes[(id+1)]);
var nextPageTop = $(hashes[id+1]).offset()['top'];
console.log('nextPageTop=', nextPageTop);
var keyOffset = pageTop + 3000;
console.log('keyOffset=',keyOffset);
if(keyOffset < nextPageTop ){
$.scrollTo( keyOffset, 2000, {
easing:'easeOutExpo',
axis:'y'
});
}
},100);
}
});
});
});
Note that each section offset changes constantly so, before launching the second animation, we have to test that we are not scrolling till the next section again. We also need a little delay here to let superscrollorama make its sauce before testing respective offsets (saddly it doesn't seem to provide an event to do so).
I had the same issue as you. Here's how I went about fixing it....
First of all we know that Superscrollorama adds a spacer pin before your element, it sets the height of the element which defines how long the user has to scroll through a section (the duration)....So in theory all we have to do is add up all the pin heights that happen BEFORE the element you want to scroll to and then offset from the top of that element...
What I did was....
Find out what element you want to scroll to. Check how many supersrollorama-pin-spacers there are before that pin, work out the heights of all of the pins and then offset it to your initial scrollTo function.
pin = $('#pin-id').prev(); //find the spacer pin
prevPin = pin.prevAll('.superscrollorama-pin-spacer'); //find all the pins before this
heights = []; //create an array to store the pin heights
$.each(prevPin, function( index, value ) {
value = $(this).attr('height'); //get each height
heights.push(value); // push it to array
});
//use eval to join all the heights together
heights = eval(heights.join("+"));
Now we have the height so lets scroll to it.....
TweenMax.to($('html,body'),1, { scrollTop:heights, });
Good Luck! I hope this helps you.
I have had a similar issue and found that janpaepke on the superscrollorama project added an additional toggle to make this easier.
You can manually add the spacers so you don't need to make adjustments by setting the pushFollowers flag in your pin to false.
Example JS
controller.pin($('#pin-id'), 200, {
anim: new TimelineLite().append([TweenMax.fromTo( $('#pin-id'), 2, {css:{opacity: 1}}, {css:{opacity: 0}})]),
offset: 0,
pushFollowers: false
});
Example HTML
<div id="pin-id">
Bunch of Content
</div>
<div style="padding-top: 200px"></div>

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