I want to display the animation that I have and also remove the element from the DOM, however by removing this the animation does not show.
I have tried using the setTimeout() function but as I need to target a specific element I cannot work out how to get both to execute!
here is the code:
function anagramHitsTheBottom () {
$('.anagram').each(function () {
const position = Math.round($(this).position().top);
if (position >= 450) {
console.log(lifeScore);
lifeScore -= 1;
$lives.html(Lives Left: ${lifeScore});//Not Working
$(this).css('color','red');
$(this).addClass('animated hinge');
$(this).remove();
}
});
}
please ignore that I haven't used backticks in the ${} I know I need them!
Here's what you missing: You are adding the animation to the element and at the same time, you're removing it from your document.
You could use this extension(scroll a little bit up) for jQuery
$.fn.extend({
animateCss: function (animationName, callback) {
var animationEnd = 'webkitAnimationEnd mozAnimationEnd MSAnimationEnd oanimationend animationend';
this.addClass('animated ' + animationName).one(animationEnd, function() {
var obj = $(this);
obj.removeClass('animated ' + animationName);
if(callback && typeof callback === 'function') callback(obj);
});
}
});
This will make the animation run just one time and then you can use a callback to remove the element.
$(this).animateCss('hinge', function (obj) {
//This will execute at the end of the animation
obj.remove();
});
I have a code:
$('#sectionName').on('animationend webkitAnimationEnd oAnimationEnd', function () {
alert("Hello");
});
which is meant to trigger the alert when animation of #sectionName ends.
It does its job but it is also triggered first time the website is launched.
Is there a way to prevent it? Some way to trigger this alert only when the animationend event is heard for the second time?
PS I am using wow.js, so the #sectionName object slides in, after scrolling to certain page point, and then I want the alert to be displayed.
Try it simple:
Var firstTime = true
$('#sectionName').on('animationend webkitAnimationEnd oAnimationEnd', function () {
if(firstTime){
firstTime = false;
return;
}
alert("Hello");
});
You can use wow.js callback to catch an animation is started:
var sections = ['sectionName', 'sectionName2']
var wow = new WOW({
callback: function(box) {
var $box = $(box);
if ( sections.indexOf( $box.attr('id') ) >= 0 ) {
$box.on('animationend webkitAnimationEnd oAnimationEnd', function () {
alert("Hello");
});
}
}
}).init();
[ https://jsfiddle.net/6g01kLsh/ ]
Only tested for animationend and webkitAnimationEnd.
var isWebkitAnim = window.onanimationend === undefined && window.onwebkitanimationend !== undefined
var animationEndEvent = isWebkitAnim ? 'webkitAnimationEnd' : 'animationend'
$('#sectionName').on(animationEndEvent, function() {
alert("Hello")
})
I want to put a little delay for onmouseout event for a group of sub items in a drop down menu. But I don't want to use css transitions.
I set it with .hover() and setTimeout method but I wanted to put it only for a specific elements in menu - in this case just for sub items so I used if else statement for them. I have no idea why this if else statement does't work.
Here is my javascript code:
var selectors =
{
element: '.main-menu li:has(ul)'
}
var opacityWorkaround = function ($element, value) {
$element.css('opacity', value);
};
var getAnimationValues = function (visible) {
var result = {
visibility: visible
};
result.opacity = visible === 'visible' ? 1 : 0;
};
var mouseActionHandler = function ($element, visible, opacityValue) {
$element
.stop()
.css("visibility", 'visible')
.animate(getAnimationValues(visible),
3000,
function () {
$(this).css("visibility", visible);
opacityWorkaround($(this), opacityValue);
});
};
var onMouseIn = function () {
var $submenu = $(this).children("ul:first");
if ($submenu) {
mouseActionHandler($submenu, 'visible', 1);
}
};
var onMouseOut = function () {
var $submenu = $(this).children("ul:first");
var $global = $('.global').children('ul');
if ($submenu) {
mouseActionHandler($submenu, 'hidden', 0);
} else if ($global) {
setTimeout(function() {
mouseActionHandler($global, 'hidden', 0);
},1500);
}
};
$(selectors.element).hover(onMouseIn, onMouseOut);
I put 1500ms delay and the $global variable is referring to sub items in menu that I want to make disapear with that delay. I wanted to achieve this when user move mouse cursor out of 'some items >' tab.
Here is my fiddle example.
http://jsfiddle.net/PNz9F/1/
Thanks in advance for any help!
In the example you have in your question $submenu always has a value so the else if statement is never run. You can check for a class instead.
var timeout;
var $submenu = $(this).children("ul:first");
var $global = $('.global').children('ul');
if ($(this).hasClass('menu-item')) {
mouseActionHandler($submenu, 'hidden', 0);
mouseActionHandler($global, 'hidden', 0);
clearTimeout(timeout);
} else if ($(this).hasClass('global')) {
timeout = setTimeout(function() {
mouseActionHandler($global, 'hidden', 0);
},1500);
}
you should be able to just use the :hover selector in your code to check whether the user is hovering over the element or not and run code accordingly
How do I add a pause effect when I hover over an image in a jQuery slideshow?
$(document).ready(function () {
slideShow();
});
function slideShow() {
var showing = $('#slideshow .show');
var next = showing.next().length ? showing.next() : showing.parent().children(':first');
var timer;
showing.fadeOut(500, function () {
next.fadeIn(200).addClass('show');
}).removeClass('show');
setTimeout(slideShow, 3000);
}
var hovering = false; //default is not hovering
$("#slideshow").hover(function () { //*replace body with your element
hovering = true; //when hovered, hovering is true
}, function () {
hovering = false; //when un-hovered, hovering is false
slideShow(); //start the process again
});
function slideShow() {
if(!hovering) { //if not hovering, proceed
/* Your code here*/
nextSlide();
setTimeout(slideShow, 1000);
}
}
function nextSlide(){
var showing = $('#slideshow .show');
var next = showing.next().length ? showing.next() : showing.parent().children(':first');
var timer;
showing.fadeOut(500, function () {
next.fadeIn(200).addClass('show');
}).removeClass('show');
}
Demo: http://jsfiddle.net/DerekL/mqEbZ/
Use .delay() that will help.
Description: Set a timer to delay execution of subsequent items in the queue.
I think you need two functions for that ... slideShow() and other one say pauseSlideshow()... now call the slideshow() on mouseout event and on mouseenter call pauseSlideShow()
your code should be something like this
$(document).ready(function(){
$('.slider').mouseout( slideShow());
$('.slider').mouseenter( pauseSlideShow());
});
function slideShow() {
var showing = $('#slideshow .show');
var next = showing.next().length ? showing.next() : showing.parent().children(':first');
var timer;
showing.fadeOut(500, function() { next.fadeIn(200).addClass('show'); }).removeClass('show');
timeOut = setTimeout(slideShow, 3000);
}
function PauseSlideShow() {
window.clearTimeout(timeOut);
}
TRY IT
Working off of Derek's answer, an alternative to hover would be to use mouseenter and mouseleave.
See the working slideshow Jsfiddle: Demo: http://jsfiddle.net/highwayoflife/6kDG7/
var hovering = false;
var slideshow = $("#slideshow");
slideshow.mouseenter(function() {
hovering = true;
}).mouseleave(function() {
hovering = false;
slideShow();
});
function slideShow() {
if (!hovering) {
# Some browsers don't interpret "display:block" as being visible
# If no images are deemed visible, choose the first...
var currentImg = (slideshow.children("img:visible").length) ? slideshow.children("img:visible") : slideshow.children("img:first");
var nextImg = (currentImg.next().length) ? currentImg.next() : slideshow.children("img:first");
currentImg.fadeOut(500, function() {
nextImg.fadeIn(500, function() {
setTimeout(slideShow, 2000);
});
});
}
}
$(document).ready(function() {
slideShow();
});
Ok with this..
$(window).scroll(function()
{
$('.slides_layover').removeClass('showing_layover');
$('#slides_effect').show();
});
I can tell when someone is scrolling from what I understand. So with that I am trying to figure out how to catch when someone has stopped. From the above example you can see I am removing a class from a set of elements while the scrolling is occurring. However, I want to put that class back on when the user stops scrolling.
The reason for this is I am intent on having a layover show while the page is scrolling to give the page a special effect I am attempting to work on. But the one class I am trying to remove while scrolling conflicts with that effect as its a transparency effect to some nature.
$(window).scroll(function() {
clearTimeout($.data(this, 'scrollTimer'));
$.data(this, 'scrollTimer', setTimeout(function() {
// do something
console.log("Haven't scrolled in 250ms!");
}, 250));
});
Update
I wrote an extension to enhance jQuery's default on-event-handler. It attaches an event handler function for one or more events to the selected elements and calls the handler function if the event was not triggered for a given interval. This is useful if you want to fire a callback only after a delay, like the resize event, or such.
It is important to check the github-repo for updates!
https://github.com/yckart/jquery.unevent.js
;(function ($) {
var on = $.fn.on, timer;
$.fn.on = function () {
var args = Array.apply(null, arguments);
var last = args[args.length - 1];
if (isNaN(last) || (last === 1 && args.pop())) return on.apply(this, args);
var delay = args.pop();
var fn = args.pop();
args.push(function () {
var self = this, params = arguments;
clearTimeout(timer);
timer = setTimeout(function () {
fn.apply(self, params);
}, delay);
});
return on.apply(this, args);
};
}(this.jQuery || this.Zepto));
Use it like any other on or bind-event handler, except that you can pass an extra parameter as a last:
$(window).on('scroll', function(e) {
console.log(e.type + '-event was 250ms not triggered');
}, 250);
http://yckart.github.com/jquery.unevent.js/
(this demo uses resize instead of scroll, but who cares?!)
Using jQuery throttle / debounce
jQuery debounce is a nice one for problems like this. jsFidlle
$(window).scroll($.debounce( 250, true, function(){
$('#scrollMsg').html('SCROLLING!');
}));
$(window).scroll($.debounce( 250, function(){
$('#scrollMsg').html('DONE!');
}));
The second parameter is the "at_begin" flag. Here I've shown how to execute code both at "scroll start" and "scroll finish".
Using Lodash
As suggested by Barry P, jsFiddle, underscore or lodash also have a debounce, each with slightly different apis.
$(window).scroll(_.debounce(function(){
$('#scrollMsg').html('SCROLLING!');
}, 150, { 'leading': true, 'trailing': false }));
$(window).scroll(_.debounce(function(){
$('#scrollMsg').html('STOPPED!');
}, 150));
Rob W suggected I check out another post here on stack that was essentially a similar post to my original one. Which reading through that I found a link to a site:
http://james.padolsey.com/javascript/special-scroll-events-for-jquery/
This actually ended up helping solve my problem very nicely after a little tweaking for my own needs, but over all helped get a lot of the guff out of the way and saved me about 4 hours of figuring it out on my own.
Seeing as this post seems to have some merit, I figured I would come back and provide the code found originally on the link mentioned, just in case the author ever decided to go a different direction with the site and ended up taking down the link.
(function(){
var special = jQuery.event.special,
uid1 = 'D' + (+new Date()),
uid2 = 'D' + (+new Date() + 1);
special.scrollstart = {
setup: function() {
var timer,
handler = function(evt) {
var _self = this,
_args = arguments;
if (timer) {
clearTimeout(timer);
} else {
evt.type = 'scrollstart';
jQuery.event.handle.apply(_self, _args);
}
timer = setTimeout( function(){
timer = null;
}, special.scrollstop.latency);
};
jQuery(this).bind('scroll', handler).data(uid1, handler);
},
teardown: function(){
jQuery(this).unbind( 'scroll', jQuery(this).data(uid1) );
}
};
special.scrollstop = {
latency: 300,
setup: function() {
var timer,
handler = function(evt) {
var _self = this,
_args = arguments;
if (timer) {
clearTimeout(timer);
}
timer = setTimeout( function(){
timer = null;
evt.type = 'scrollstop';
jQuery.event.handle.apply(_self, _args);
}, special.scrollstop.latency);
};
jQuery(this).bind('scroll', handler).data(uid2, handler);
},
teardown: function() {
jQuery(this).unbind( 'scroll', jQuery(this).data(uid2) );
}
};
})();
I agreed with some of the comments above that listening for a timeout wasn't accurate enough as that will trigger when you stop moving the scroll bar for long enough instead of when you stop scrolling. I think a better solution is to listen for the user letting go of the mouse (mouseup) as soon as they start scrolling:
$(window).scroll(function(){
$('#scrollMsg').html('SCROLLING!');
var stopListener = $(window).mouseup(function(){ // listen to mouse up
$('#scrollMsg').html('STOPPED SCROLLING!');
stopListner(); // Stop listening to mouse up after heard for the first time
});
});
and an example of it working can be seen in this JSFiddle
ES6 style with checking scrolling start also.
function onScrollHandler(params: {
onStart: () => void,
onStop: () => void,
timeout: number
}) {
const {onStart, onStop, timeout = 200} = params
let timer = null
return (event) => {
if (timer) {
clearTimeout(timer)
} else {
onStart && onStart(event)
}
timer = setTimeout(() => {
timer = null
onStop && onStop(event)
}, timeout)
}
}
Usage:
yourScrollableElement.addEventListener('scroll', onScrollHandler({
onStart: (event) => {
console.log('Scrolling has started')
},
onStop: (event) => {
console.log('Scrolling has stopped')
},
timeout: 123 // Remove to use default value
}))
You could set an interval that runs every 500 ms or so, along the lines of the following:
var curOffset, oldOffset;
oldOffset = $(window).scrollTop();
var $el = $('.slides_layover'); // cache jquery ref
setInterval(function() {
curOffset = $(window).scrollTop();
if(curOffset != oldOffset) {
// they're scrolling, remove your class here if it exists
if($el.hasClass('showing_layover')) $el.removeClass('showing_layover');
} else {
// they've stopped, add the class if it doesn't exist
if(!$el.hasClass('showing_layover')) $el.addClass('showing_layover');
}
oldOffset = curOffset;
}, 500);
I haven't tested this code, but the principle should work.
function scrolled() {
//do by scroll start
$(this).off('scroll')[0].setTimeout(function(){
//do by scroll end
$(this).on('scroll',scrolled);
}, 500)
}
$(window).on('scroll',scrolled);
very small Version with start and end ability
This detects the scroll stop after 1 milisecond (or change it) using a global timer:
var scrollTimer;
$(window).on("scroll",function(){
clearTimeout(scrollTimer);
//Do what you want whilst scrolling
scrollTimer=setTimeout(function(){afterScroll()},1);
})
function afterScroll(){
//I catched scroll stop.
}
Ok this is something that I've used before.
Basically you look a hold a ref to the last scrollTop().
Once your timeout clears, you check the current scrollTop() and if they are the same, you are done scrolling.
$(window).scroll((e) ->
clearTimeout(scrollTimer)
$('header').addClass('hidden')
scrollTimer = setTimeout((() ->
if $(this).scrollTop() is currentScrollTop
$('header').removeClass('hidden')
), animationDuration)
currentScrollTop = $(this).scrollTop()
)
please check the jquery mobile scrollstop event
$(document).on("scrollstop",function(){
alert("Stopped scrolling!");
});
For those Who Still Need This Here Is The Solution
$(function(){
var t;
document.addEventListener('scroll',function(e){
clearTimeout(t);
checkScroll();
});
function checkScroll(){
t = setTimeout(function(){
alert('Done Scrolling');
},500); /* You can increase or reduse timer */
}
});
This should work:
var Timer;
$('.Scroll_Table_Div').on("scroll",function()
{
// do somethings
clearTimeout(Timer);
Timer = setTimeout(function()
{
console.log('scrolling is stop');
},50);
});
Here is how you can handle this:
var scrollStop = function (callback) {
if (!callback || typeof callback !== 'function') return;
var isScrolling;
window.addEventListener('scroll', function (event) {
window.clearTimeout(isScrolling);
isScrolling = setTimeout(function() {
callback();
}, 66);
}, false);
};
scrollStop(function () {
console.log('Scrolling has stopped.');
});
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>.<br>
</body>
</html>