Develop Reference

2 setTimeout in Javascript not working properly

I manage to create my first function to hide and display div, But when I try to use 2 setTime out the other div is loading infinitely, What I need to do is to display div in diffrent set of time, any idea ?
Here is JS my code
function showDiv1() {
// If there are hidden divs left
if ($('.forHide:hidden').length) {
// Fade the first of them in
$('.forHide:hidden:first').fadeIn();
if ($('.forHide:hidden').length >= 1) {
$(".forHide").fadeOut(1500, function() {});
}
// And wait one second before fading in the next one
myVar = setTimeout(showDiv1, 100);
}
}
function showDiv2() {
// If there are hidden divs left
if ($('.forSlowMo:hidden').length) {
// Fade the first of them in
$('.forSlowMo:hidden:first').fadeIn();
if ($('.forSlowMo:hidden').length >= 1) {
$(".forSlowMo").fadeOut(1500, function() {});
}
// And wait one second before fading in the next one
setTimeout(showDiv2, 1000);
}
}

After .fadeIn of the first item, if there are any more hidden, the code currently fades them all out:
$('.forSlowMo:hidden:first').fadeIn();
if ($('.forSlowMo:hidden').length >= 1) {
// this line selects all, including the one just shown
$(".forSlowMo").fadeOut(1500, function() {});
}
You need to exclude the one you've just shown:
var x = $('.forSlowMo:hidden:first').fadeIn();
if ($('.forSlowMo:hidden').length >= 1) {
$(".forSlowMo").not(x).fadeOut(1500, function() {});
}
Updated fiddle: https://jsfiddle.net/hd8q1mox/1/
In the fiddle, I've removed the .forHide part so you can see the difference on the .slowMo as they appear on top of each other.

Photoswipe 4.0: Initiate 'swipe to next' programatically

SITUATION
I have been trying to trigger the 'slide to next picture' animation when the NEXT button is clicked, but i have not found a solution for this.
There is an ongoing discussion about this on GitHub, but it is only about adding the option for a slide animation, not about how to actually do it with PS as it is right now.
There was an option for it in 3.0 but as 4.0 is a complete rewrite it does not work anymore.
QUESTION
Instead of just 'jumping' to the next/prev picture when an arrow is clicked, i need the 'slide transition' that is also used when swiping/dragging the image.
There is no option to trigger that, so how can i manually trigger this effect with JS?

PhotoSwipe Slide Transitions
So, I added slide transitions to Photoswipe, and it's working nicely without disturbing native behavior.
http://codepen.io/mjau-mjau/full/XbqBbp/
http://codepen.io/mjau-mjau/pen/XbqBbp
The only limitation is that transition will not be applied between seams in loop mode (for example when looping from last slide to slide 1). In examples I have used jQuery.
Essentially, it works by simply adding a CSS transition class to the .pswp__container on demand, but we need to add some javascript events to prevent the transition from interfering with Swipe, and only if mouseUsed. We also add a patch so the transition does not get added between loop seams.
1. Add the below to your CSS
It will be applied on-demand from javascript when required.
.pswp__container_transition {
-webkit-transition: -webkit-transform 333ms cubic-bezier(0.4, 0, 0.22, 1);
transition: transform 333ms cubic-bezier(0.4, 0, 0.22, 1);
}
2. Add javascript events to assist in assigning the transition class
This can go anywhere, but must be triggered after jQuery is loaded.
var mouseUsed = false;
$('body').on('mousedown', '.pswp__scroll-wrap', function(event) {
// On mousedown, temporarily remove the transition class in preparation for swipe. $(this).children('.pswp__container_transition').removeClass('pswp__container_transition');
}).on('mousedown', '.pswp__button--arrow--left, .pswp__button--arrow--right', function(event) {
// Exlude navigation arrows from the above event.
event.stopPropagation();
}).on('mousemove.detect', function(event) {
// Detect mouseUsed before as early as possible to feed PhotoSwipe
mouseUsed = true;
$('body').off('mousemove.detect');
});
3. Add beforeChange listener to re-assign transition class on photoswipe init
The below needs to be added in your PhotoSwipe init logic.
// Create your photoswipe gallery element as usual
gallery = new PhotoSwipe(pswpElement, PhotoSwipeUI_Default, items, options);
// Transition Manager function (triggers only on mouseUsed)
function transitionManager() {
// Create var to store slide index
var currentSlide = options.index;
// Listen for photoswipe change event to re-apply transition class
gallery.listen('beforeChange', function() {
// Only apply transition class if difference between last and next slide is < 2
// If difference > 1, it means we are at the loop seam.
var transition = Math.abs(gallery.getCurrentIndex()-currentSlide) < 2;
// Apply transition class depending on above
$('.pswp__container').toggleClass('pswp__container_transition', transition);
// Update currentSlide
currentSlide = gallery.getCurrentIndex();
});
}
// Only apply transition manager functionality if mouse
if(mouseUsed) {
transitionManager();
} else {
gallery.listen('mouseUsed', function(){
mouseUsed = true;
transitionManager();
});
}
// init your gallery per usual
gallery.init();

You can just use a css transition:
.pswp__container{
transition:.3s ease-in-out all;
}
This might not be ideal for performance on mobile, but I just add this transition in a media query and allow users to use the swipe functionality on smaller screens.

I finally bit the bullet and spent some time making this work as nobody seemed to have a solution for that, not here neither on GitHub or anywhere else.
SOLUTION
I used the fact that a click on the arrow jumps to the next item and triggers the loading of the next image and sets the whole slide state to represent the correct situation in an instant.
So i just added custom buttons which would initiate a slide transition and then triggered a click on the original buttons (which i hid via CSS) which would update the slide state to represent the situation i created visually.
Added NEW next and prev arrows
Hid the ORIGINAL next and prev arrows via css
Animated the slide myself when the NEW next or prev arrows were clicked
Then triggered the click on the ORIGINAL next or prev arrows programmatically
So here is the code:
HTML
// THE NEW BUTTONS
<button class="NEW-button-left" title="Previous (arrow left)">PREV</button>
<button class="NEW-button-right" title="Next (arrow right)">NEXT</button>
// added right before this original lines of the example code
<button class="pswp__button pswp__button--arrow--left ...
CSS
pswp__button--arrow--left,
pswp__button--arrow--right {
display: none;
}
NEW-button-left,
NEW-button-right {
/* whatever you fancy */
}
JAVASCRIPT (helper functions)
var tx = 0; // current translation
var tdir = 0;
var slidepseactive = false;
// helper function to get current translate3d positions
// as per https://stackoverflow.com/a/7982594/826194
function getTransform(el) {
var results = $(el).css('-webkit-transform').match(/matrix(?:(3d)\(-{0,1}\d+(?:, -{0,1}\d+)*(?:, (-{0,1}\d+))(?:, (-{0,1}\d+))(?:, (-{0,1}\d+)), -{0,1}\d+\)|\(-{0,1}\d+(?:, -{0,1}\d+)*(?:, (-{0,1}\d+))(?:, (-{0,1}\d+))\))/)
if(!results) return [0, 0, 0];
if(results[1] == '3d') return results.slice(2,5);
results.push(0);
return results.slice(5, 8);
}
// set the translate x position of an element
function translate3dX($e, x) {
$e.css({
// TODO: depending on the browser we need one of those, for now just chrome
//'-webkit-transform': 'translate3d(' +String(x) + 'px, 0px, 0px)'
//, '-moz-transform': 'translate3d(' +String(x) + 'px, 0px, 0px)'
'transform': 'translate3d(' +String(x) + 'px, 0px, 0px)'
});
};
JAVASCRIPT (main)
// will slide to the left or to the right
function slidePS(direction) {
if (slidepseactive) // prevent interruptions
return;
tdir = -1;
if (direction == "left") {
tdir = 1;
}
// get the current slides transition position
var t = getTransform(".pswp__container");
tx = parseInt(t[0]);
// reset anim counter (you can use any property as anim counter)
$(".pswp__container").css("text-indent", "0px");
slidepseactive = true;
$(".pswp__container").animate(
{textIndent: 100},{
step: function (now, fx) {
// here 8.7 is the no. of pixels we move per animation step %
// so in this case we slide a total of 870px, depends on your setup
// you might want to use a percentage value, in this case it was
// a popup thats why it is a a fixed value per step
translate3dX($(this), tx + Math.round(8.7 * now * tdir));
},
duration: '300ms',
done: function () {
// now that we finished sliding trigger the original buttons so
// that the photoswipe state reflects the new situation
slidepseactive = false;
if (tdir == -1)
$(".pswp__button--arrow--right").trigger("click");
else
$(".pswp__button--arrow--left").trigger("click");
}
},
'linear');
}
// now activate our buttons
$(function(){
$(".NEW-button-left").click(function(){
slidePS("left");
});
$(".NEW-button-right").click(function(){
slidePS("right");
});
});
I used info from those SE answers:
jQuery animate a -webkit-transform
Get translate3d values of a div?

The PhotoSwipe can do this by itself when you use swipe gesture. So why not to use the internal code instead of something that doesn't work well?
With my solution everything works well, the arrow clicks, the cursor keys and even the loop back at the end and it doesn't break anything.
Simply edit the photoswipe.js file and replace the goTo function with this code:
goTo: function(index) {
var itemsDiff;
if (index == _currentItemIndex + 1) { //Next
itemsDiff = 1;
}
else { //Prev
itemsDiff = -1;
}
var itemChanged;
if(!_mainScrollAnimating) {
_currZoomedItemIndex = _currentItemIndex;
}
var nextCircle;
_currentItemIndex += itemsDiff;
if(_currentItemIndex < 0) {
_currentItemIndex = _options.loop ? _getNumItems()-1 : 0;
nextCircle = true;
} else if(_currentItemIndex >= _getNumItems()) {
_currentItemIndex = _options.loop ? 0 : _getNumItems()-1;
nextCircle = true;
}
if(!nextCircle || _options.loop) {
_indexDiff += itemsDiff;
_currPositionIndex -= itemsDiff;
itemChanged = true;
}
var animateToX = _slideSize.x * _currPositionIndex;
var animateToDist = Math.abs( animateToX - _mainScrollPos.x );
var finishAnimDuration = 333;
if(_currZoomedItemIndex === _currentItemIndex) {
itemChanged = false;
}
_mainScrollAnimating = true;
_shout('mainScrollAnimStart');
_animateProp('mainScroll', _mainScrollPos.x, animateToX, finishAnimDuration, framework.easing.cubic.out,
_moveMainScroll,
function() {
_stopAllAnimations();
_mainScrollAnimating = false;
_currZoomedItemIndex = -1;
if(itemChanged || _currZoomedItemIndex !== _currentItemIndex) {
self.updateCurrItem();
}
_shout('mainScrollAnimComplete');
}
);
if(itemChanged) {
self.updateCurrItem(true);
}
return itemChanged;
},

Using a jquery slider for text instead of images?

This may be a little too specific, but I have a jquery slider that I am using <p> classes instead of images to cycle through customer quotes. Basically the problem I am running into right now is when it is static and non moving (JS code is commeneted out) they are aligned how I want them to be. As soon as the JS is un commented, they stretch out of view and you just see a white box?
Any ideas?
How I want each panel to look like:
jsfiddle

So I sort of made this my Friday project. I've changed a whole lot of your code, and added a vertical-align to the quotes and authors.
Here's the fiddle http://jsfiddle.net/qLca2fz4/49/
I added a whole lot of variables to the top of the script so you could less typing throughout.
$(document).ready(function () {
//rotation speed and timer
var speed = 5000;
var run = setInterval(rotate, speed);
var slides = $('.slide');
var container = $('#slides ul');
var elm = container.find(':first-child').prop("tagName");
var item_width = container.width();
var previous = 'prev'; //id of previous button
var next = 'next'; //id of next button
Since you used a % based width I'm setting the pixel widths of the elements in case the screen is reszed
slides.width(item_width); //set the slides to the correct pixel width
container.parent().width(item_width);
container.width(slides.length * item_width); //set the slides container to the correct total width
As you had, I'm rearranging the slides in the event the back button is pressed
container.find(elm + ':first').before(container.find(elm + ':last'));
resetSlides();
I combined the prev and next click events into a single function. It checks for the ID of the element targeted in the click event, then runs the proper previous or next functions. If you reset the setInterval after the click event your browser has trouble stopping it on hover.
//if user clicked on prev button
$('#buttons a').click(function (e) {
//slide the item
if (container.is(':animated')) {
return false;
}
if (e.target.id == previous) {
container.stop().animate({
'left': 0
}, 1500, function () {
container.find(elm + ':first').before(container.find(elm + ':last'));
resetSlides();
});
}
if (e.target.id == next) {
container.stop().animate({
'left': item_width * -2
}, 1500, function () {
container.find(elm + ':last').after(container.find(elm + ':first'));
resetSlides();
});
}
//cancel the link behavior
return false;
});
I've found mouseenter and mouseleave to be a little more reliable than hover.
//if mouse hover, pause the auto rotation, otherwise rotate it
container.parent().mouseenter(function () {
clearInterval(run);
}).mouseleave(function () {
run = setInterval(rotate, speed);
});
I broke this in to its own function because it gets called in a number of different places.
function resetSlides() {
//and adjust the container so current is in the frame
container.css({
'left': -1 * item_width
});
}
});
//a simple function to click next link
//a timer will call this function, and the rotation will begin :)
And here's your rotation timer.
function rotate() {
$('#next').click();
}

It took me a little bit, but I think I figured out a few things.
http://jsfiddle.net/qLca2fz4/28/
First off, your console was throwing a few errors: first, that rotate wasn't defined and that an arrow gif didn't exist. Arrow gif was probably something you have stored locally, but I changed the 'rotate' error by changing the strings in the code here to your actual variables.
So, from:
run = setInterval('rotate()', speed);
We get:
run = setInterval(rotate, speed);
(No () based on the examples here: http://www.w3schools.com/jsref/met_win_setinterval.asp)
But I think a more important question is why your text wasn't showing up at all. It's because of the logic found here:
$('#slides ul').css({'left' : left_value});
You even say that this is setting the default placement for the code. But it isn't..."left_vaule" is the amount that you've calculated to push left during a slide. So if you inspect the element, you can see how the whole UL is basically shifted one slide's worth too far left, unable to be seen. So we get rid of 'left_value', and replace it with 0.
$('#slides ul').css({'left' : 0});
Now, there's nothing really handling how the pictures slide in, so that part's still rough, but this should be enough to start on.
Let me know if I misunderstood anything, or if you have any questions.

So, a few things:
1) I believe you are trying to get all of the lis to be side-by-side, not arranged up and down. There are a few ways to do this. I'd just make the ul have a width of 300%, and then make the lis each take up a third of that:
#slides ul {
....
width: 300%;
}
#slides li {
width: calc(100% / 3);
height:250px;
float:left;
}
2) You got this right, but JSFiddle automatically wraps all your JS inside a $(document).ready() handler, and your function, rotate needs to be outside, in the normal DOM. Just change that JSFiddle setting from 'onload' to 'no wrap - in head'
3) Grabbing the CSS value of an element doesn't always work, especially when you're dealing with animating elements. You already know the width of the li elements with your item_width variable. I'd just use that and change your code:
var left_indent = parseInt($('#slides ul').css('left')) - item_width;
$('#slides ul').animate({'left' : left_indent}, 1500, function () {
to:
$('#slides ul').stop().animate({'left' : -item_width * 2}, 1500, function () {
4) Throw in the .stop() as seen in the above line. This prevents your animations from overlapping. An alternative, and perhaps cleaner way to do this, would be to simply return false at the beginning of your 'next' and 'prev' functions if #slides ul is being animated, like so:
if ($('#slides ul').is(':animated')) return false;
And I think that's everything. Here's the JSFiddle. Cheers!
EDIT:
Oh, and you may also want to clearInterval at the beginning of the next and prev functions and then reset it in the animation callback functions:
$('#prev').click(function() {
if ($('#slides ul').is(':animated')) return false;
clearInterval(run);
$('#slides ul').stop().animate({'left' : 0}, 1500,function(){
....
run = setInterval('rotate()', speed);
});
});

jQuery wait for an action to complete on different functions

I have created a newsfeed. The feed switches every 2 seconds. You can also manually switch left/right, or click the panel from the squares at the bottom. The switching between slides is down using jQuery UI Slide.
Right now, if you are in the middle of a slide, and you click left/right/squares, then another slide occurs on top of the existing, still going slide and the whole system is messed up.
How can I prevent other actions occurring if a slide/switch is already in progress?
This is my code:
$(document).ready(function(){
newsfeedTimer = setInterval(newsfeed, displayDuration);
// Manual change of feed (LEFT)
$('#newsfeeds_wrapper > .left').click(function(event){
event.stopPropagation();
feedLeft();
clearInterval(newsfeedTimer);
newsfeedTimer = setInterval(newsfeed, displayDuration);
});
// Very similar code for feed right
// Ignore the other method of switching (if it works for above, I can implement it for this one)
});
function newsfeed() {
feedRight();
}
// Feed to the Right
// jump is used to jump multiple newsfeed instead of one at a time
function feedRight(jump)
{
jump = typeof jump !== 'undefined' ? jump : 1;
var current = $('.newsfeed:first');
var next = $('.newsfeed:nth(' + jump + ')');
current.hide('slide',{duration: transitionDuration}, function(){
// Append as many needed
for( var i = 0; i < jump; i++ ) {
$('.newsfeed:first').appendTo('#newsfeeds');
}
next.show('slide',{direction : 'right' , duration: transitionDuration});
}
I don't want to stop() an animation! I want to disable changing the slides IF there is animation happening!!

without seeing the full breadth of the code, I am shooting myself in the foot here. But here is a direction I would take it. You could also have two functions, one to bind, another to unbind. When animation is initiated, you unbind the left/right controls. When stopped, you bind. Or, set a global variable... ala.
var config = {'inProgress': false};
$('#newsfeeds_wrapper > .left').click(function(event){
if(!config.inProgress){
event.stopPropagation();
feedLeft();
clearInterval(newsfeedTimer);
newsfeedTimer = setInterval(newsfeed, displayDuration);
}
});
in your animation function. Seems like when you cut/paste, some of the code is lost, so lets just assume some animation.
when you enter your animation functions, set config.inProgress = true;
function feedRight(jump)
{
config.inProgress = true;
// removed your code, but just using for simplicity sake
// added a callback
next.show('slide',{direction : 'right' , duration: transitionDuration},
function() {
// Animation complete. Set inProgress to false
config.inProgress = false;
});
)
}

jQuery animate within animate callback works only once

I have two pagination links which trigger a jQuery animation.
A callback function on the animation triggers a second animation.
This works fine, however, it only works the first time the function is called.
Each time after, the first of the 2 animations works and the second one does not, it merely changes the CSS without the effect.
I'm racking my brain here, to no effect (pun intended).
function switchItem(e) {
e.preventDefault();
// If not current piece
if($(this).hasClass('light')) {
/* VARIABLES */
var container = $('.portfolio footer .portfolio_content');
var link = $(this).attr('id');
var newItem = $(this).html();
/*===================================================
* This is the Key part here
===================================================*/
/* FIRST ANIMATION */
container.animate({
'right':'-100%'
}, 300, 'swing',
// Callback Function
function() {
$(this).html('').css({'left':'-100%'});
$.get('inc/portfolio/'+link+'.php', function(data) {
container.html(data);
/* SECOND ANIMATION */
container.animate({
'left':'0%'
}, 300, 'swing');
});
});
}
}
Here is the demonstration: http://eoghanoloughlin.com/my_site/#portfolio

See working sample here, your left is conflicting with your first right -100% animation and at the end if you don't reset the right then it will conflict with your second left animation
http://jsfiddle.net/PAdr3/2/
reset left before animating
container.css('left', 'auto');
and reset right when complete
container.animate({
'left':'0%'
}, 300, 'swing', function() {
$(this).css('right', 'auto');
});

When you replace the html in a page with new content, it will not automatically add listeners or other jquery enhancements that are added via javascript.
I suspect you need to apply these again after you put the content you fetched with $.get into the page.
Another alternative, is to add all the content in one load, but make the second page hidden. This is probably a nicer alternative than using $.get

I think that the animate function does not string until the first animate is ready. The docs say:
If supplied, the complete callback function is fired once the
animation is complete. This can be useful for stringing different
animations together in sequence.
Something like this might work:
function switchItem(e) {
e.preventDefault();
// If not current piece
if($(this).hasClass('light')) {
/* VARIABLES */
var container = $('.portfolio footer .portfolio_content');
var link = $(this).attr('id');
var newItem = $(this).html();
/*===================================================
* This is the Key part here
===================================================*/
/* FIRST ANIMATION */
container.animate({
'right':'-100%'
}, 300, 'swing',
// Callback Function
function() {
$(this).html('').css({'left':'-100%'});
$.get('inc/portfolio/'+link+'.php', function(data) {
container.html(data);
});
}).complete(
/* SECOND ANIMATION */
container.animate({
'left':'0%'
}, 300, 'swing');
);
}
}