Develop Reference

Js infinte marquee text. Works on mouseover, but not on doc load

I have a strange problem. I have digged up this code snippet that allows a text row to be animated left and then repeated infinitely. While this works perfectly. I'd like to have all the rows to be animated on body load but much slower. And then when you mouseover on each of the rows the animation picks up more speed.
https://codepen.io/umbriel/pen/RjYqRR
So far I've tried stuff like looping each of the questions and then running the animation. But it still only grabbed one of the divs and animated it.
var el_text = questions[i].querySelectorAll('.intro-question-text');
for (var i = 0; i < el_text.length; i++) {
el_text[i].style.transform = 'translate3d(' + qScrollPositions[i] + 'px,0,0)'
}
Any pointers? Thank you so much!

You can get it to do what you want by using the setInterval function (and swapping it out to a quicker one when the user hovers over the element).
var textCopy = document.querySelectorAll('.intro-question-text')
for (var i = 0; i < textCopy.length; i++) {
var text = textCopy[i].innerHTML.repeat(5)
textCopy[i].insertAdjacentHTML('beforeend', text)
}
var WIN_H,
WIN_W,
qFrame = [];
var questions = document.querySelectorAll('.intro-question');
var scrollRequest;
var qScrollPositions = [];
var passiveRepeaters = [];
var repeater;
function initIntroScript() {
Array.prototype.map.call(questions, function(q, i) {
addImageHover(i);
})
window.addEventListener('resize', resizeHandler);
resizeHandler();
}
function addImageHover(i) {
qFrame[i] = 0;
qScrollPositions[i] = Math.floor(Math.random() * -200);
questions[i].querySelector('.intro-question-text').style.transform = 'translate3d(' + qScrollPositions[i] + 'px,0,0)';
questions[i].addEventListener('mouseenter', function() {
//console.log("mouseenter -> " + i);
clearInterval(passiveRepeaters[i]);
repeater = setInterval(function() {
scrollQuestionText(i);
}, 10);
});
questions[i].addEventListener('mouseleave', function() {
//console.log("mouseleave -> " + i);
clearInterval(repeater);
passiveRepeaters[i] = setInterval(function() {
scrollQuestionText(i);
}, 20);
});
passiveRepeaters[i] = setInterval(function() {
scrollQuestionText(i);
}, 20);
}
function scrollQuestionText(i) {
var shift = Math.floor(4 + WIN_W/800) * Math.min(0.2, qFrame[i] / 20);
cancelAnimationFrame(scrollRequest);
var el_text = questions[i].querySelector('.intro-question-text');
qScrollPositions[i] = qScrollPositions[i] - shift;
if (qScrollPositions[i] < -el_text.clientWidth / 2 - 5) {
qScrollPositions[i] = 0;
}
el_text.style.transform = 'translate3d(' + qScrollPositions[i] + 'px,0,0)'
qFrame[i]++;
}
initIntroScript();
function resizeHandler() { // NEEDS TO NOT BREAK ON RESIZE
WIN_W = window.innerWidth;
WIN_H = window.innerHeight;
}
body {
font-family: sans-serif;
font-size:4rem;
}
.intro-question {
position: relative;
color: #000000;
cursor: pointer;
transition: .3s;
white-space: nowrap;
padding: 0;
backface-visibility: hidden;
will-change: transform, color, background;
flex-shrink: 2;
/* opacity: 0; */
transition: opacity .5s, transform 1s ease-out;
z-index: 2;
}
.intro-question-text {
backface-visibility: hidden;
will-change: transform;
position: relative;
display: inline-block;
transition: .5s opacity;
}
<div class="intro-questions">
<div class="intro-question">
<div class="intro-question-text white">
Testing content in here
</div>
</div>
<div class="intro-question">
<div class="intro-question-text white">
Content testing
</div>
</div>
<div class="intro-question">
<div class="intro-question-text white">
Content stackoverflow please
</div>
</div>
</div>
edit
You can increase the framerate by reducing the interval between the function calls, for example
questions[i].addEventListener('mouseenter', function() {
//console.log("mouseenter -> " + i);
clearInterval(passiveRepeaters[i]);
repeater = setInterval(function() {
scrollQuestionText(i);
}, 10);
});
questions[i].addEventListener('mouseleave', function() {
//console.log("mouseleave -> " + i);
clearInterval(repeater);
passiveRepeaters[i] = setInterval(function() {
scrollQuestionText(i);
}, 20);
});
passiveRepeaters[i] = setInterval(function() {
scrollQuestionText(i);
}, 20);
if you do this and don't want the scrolling to speed up you can decrease the step size like this
var shift = Math.floor(4 + WIN_W/800) * Math.min(0.2, qFrame[i] / 10);

Javascript - Block that should disappear on click reappear elsewhere

I am trying to get three squares (put ramdomly) on page to disappear on click BUt for a reason I don't understand, some of them (usually the 2nd or 3rd one) reappear elsewhere on the page when I click on them.
They should just disappear.
I made a jsffidle: https://jsfiddle.net/DTcHh/9949/
The code:
HTML
<div class="container">
<div id="square-zone">
<!--
here appear the squares
-->
</div>
</div>
Javascript
//randomly place squares
$(function() {
var numInfoSquares = 3;
var $squareZone = $("#square-zone");
var $toAppend = $('<div class="info-square"><span class="square" data-toggle="modal"></span></div>');
for (var c = 0; c < numInfoSquares; c++) {
$squareZone.append(
$toAppend.clone()
.find('.square').attr("data-target", "#myInfoModal" + (c + 1))
.end()
);
};
// place info squares randomly on the page
function getRandomInt(min, max) {
return Math.random() * (max - min + 1) + min;
}
$(".info-square").each(function () {
var topPosition = getRandomInt(8, 70);
var leftPosition = getRandomInt(8, 92);
$(this).css({
"top": topPosition+"%",
"left": leftPosition+"%"
});
});
// clicked squares disappears on click
$(".info-square").click(function () {
$(this).css("display","none");
$(this).next().css("display","block");
});
});
CSS
body {
margin: 10px;
}
#square-zone > div { position: absolute; }
.info-square > span {
display: inline-block;
cursor: pointer;
background: url(http://cliparts.co/cliparts/ATb/jRa/ATbjRan5c.png) no-repeat center center;
width: 30px;
height: 30px;
}
How can I prevent the squares to reappear ?

Well just remove that line from your code which makes it appear again
$(this).next().css("display","block");
// clicked squares disappears on click
$(".info-square").click(function () {
$(this).css("display","none");
//$(this).next().css("display","block");
});
Updated jsfiddle with commented line https://jsfiddle.net/DTcHh/9950/

that is because of $(this).next().css("display","block");.
Assume you are clicking on 2nd element then it is hidden, then you are clicking on the first element now that is hidden but when the above line is executed it will display the second element back as it is the next sibling of the first info-square
//randomly place squares
$(function() {
var numInfoSquares = 3;
var $squareZone = $("#square-zone");
var $toAppend = $('<div class="info-square"><span class="square" data-toggle="modal"></span></div>');
for (var c = 0; c < numInfoSquares; c++) {
$squareZone.append(
$toAppend.clone()
.find('.square').attr("data-target", "#myInfoModal" + (c + 1))
.end()
);
};
// place info squares randomly on the page
function getRandomInt(min, max) {
return Math.random() * (max - min + 1) + min;
}
$(".info-square").each(function() {
var topPosition = getRandomInt(8, 70);
var leftPosition = getRandomInt(8, 92);
$(this).css({
"top": topPosition + "%",
"left": leftPosition + "%"
});
});
// clicked squares disappears on click
$(".info-square").click(function() {
$(this).css("display", "none");
//$(this).next().css("display", "block"); this displayes the next element back if it was already hidden
});
});
/* Latest compiled and minified CSS included as External Resource*/
body {
margin: 10px;
}
#square-zone > div {
position: absolute;
}
.info-square > span {
display: inline-block;
cursor: pointer;
background: url(http://cliparts.co/cliparts/ATb/jRa/ATbjRan5c.png) no-repeat center center;
width: 30px;
height: 30px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="container">
<div id="square-zone">
<!--
here appear the squares
-->
</div>
</div>

Alternately, changing $(this).css("display","none"); to $(this).css("visibility","hidden"); also solves it.
Here's the jsfiddle

change background-image of div with animation

I would like to create a little slider to change background-image of my div every seconds.
My code doesn't work for the moment, image is not changed. And ideally, i would like that the script run in infinite mode..
HTML
<div id="slidesPartenairesHome"></div>
CSS
#slidesPartenairesHome {
background-size: contain;
background-position: center center;
width: 300px;
height: 170px;
margin-left: 120px;
}
JS
$( document ).ready(function() {
var arrayOfPartenaires = [
"images/partenaires/a.png",
"images/partenaires/b.jpg",
"images/partenaires/c.jpg",
"images/partenaires/d.png",
"images/partenaires/e.png",
"images/partenaires/f.jpg",
"images/partenaires/g.jpg",
"images/partenaires/h.jpg",
"images/partenaires/i.png",
"images/partenaires/j.jpg",
"images/partenaires/k.jpg",
"images/partenaires/l.jpg"
];
for (var i=0; i<arrayOfPartenaires.length; i++) {
var currentPartenaireImg = arrayOfPartenaires[i];
$('#slidesPartenairesHome').animate({opacity: 0}, 'slow', function() {
$(this).css({'background-image': 'url("'+currentPartenaireImg+')'}).animate({opacity: 1});
});
}
});

You could use window.setinterval, you could also use setTimeout but setinterval is a litle bit more precise.
Example with setinteval:
window.setInterval(function(){
var url = getCurrent();
//start animation
$('#slidesPartenairesHome').delay( 500 ).fadeTo(500, 0.3, function()
{
$(this).css('background-image', 'url(' + url + ')');
}).fadeTo('slow', 1);
}, 1000);
// We start with index of 1 because we want to skip the first image,
// Else we would be replacing it with the same image.
var index = 1;
var arrayOfPartenaires = [
"http://yourdomain.com/images/partenaires/a.png",
"http://yourdomain.com/images/partenaires/b.png",
"http://yourdomain.com/images/partenaires/c.png"
];
function getCurrent(){
// We check if the index is higher than the ammount in the array.
// If thats true set 0 (beginning of array)
if (index > arrayOfPartenaires.length -1){
index = 0;
}
var returnValue = index;
index ++;
return arrayOfPartenaires[returnValue];
}
Note if you really want to change the image every 1 second the background will be changing very fast.
Fiddle

I hope this may help you
html
<div id="slidesPartenairesHome">
<div id="imags">
</div>
</div>
Css
#slidesPartenairesHome
{
margin-left: 120px;
}
#slidesPartenairesHome, #imags
{
background-size: contain;
background-position: center center;
width: 300px;
height: 170px;
}
Js
$(function () {
var arrayOfPartenaires = [
"http://fotos2013.cloud.noticias24.com/animales1.jpg",
"http://www.schnauzi.com/wp-content/uploads/2013/03/animales-en-primavera.jpg",
"https://johannagrandac.files.wordpress.com/2015/01/conejos.jpg",
"http://png-4.findicons.com/files/icons/1035/human_o2/128/face_smile.png",
"http://icons.iconarchive.com/icons/rokey/the-blacy/128/big-smile-icon.png",
"http://simpleicon.com/wp-content/uploads/smile-256x256.png"
];
var loaders = 0;
function cycleImages() {
var element = arrayOfPartenaires[loaders];
$("#imags").css({ 'background-image': 'url(' + element + ')' }).animate({ opacity: 1 }).hide().fadeIn("slow");
if (loaders < arrayOfPartenaires.length) {
loaders = loaders + 1;
if (loaders >= arrayOfPartenaires.length) {
loaders = 0;
}
}
else {
loaders = 0;
}
console.log(loaders, arrayOfPartenaires[loaders]);
}
cycleImages();
setInterval(function () { cycleImages() }, 3000);
});
jsFiddel Demo

JavaScript dymanically change CSS background style

I am trying to dynamically change my background image by continuously looping through an array of image paths. The code works if I log the output to a console, but I cannot get the image to actually change.
Original CSS: (I am overriding the default style from another CSS file)
<style>
.jumbotron {
background: #7da7d8 url('images/rotunda2.jpg') no-repeat center center !important;
}
</style>
JavaScript:
$(document).ready(function () {
var count = -1;
var images=new Array("images/image1.jpg","images/image2.jpg","images/image3.jpg");
setInterval(swap, 5000);
function swap(){
$('.jumbotron').css("background", "#7da7d8 url('"+images[++count % images.length]+"') no-repeat center center !important");
console.log(images[++count % images.length]);
}
});
Any ideas?

You're swap function seems kind of odd. Typically for something like this, you could have a counter that gets incremented and then just resets to 0 and starts over. Also make sure you are running in an onload event handler context.
var count = 0;
var images=new Array("images/image1.jpg","images/image2.jpg","images/image3.jpg");
function swap(){
//get the next image
var nextImage = images[count];
console.log(nextImage);
$('.jumbotron').css("background-image", nextImage);
//increment count
count = count > images.length - 1 ? 0 : count+=1;
}
$(document).ready(function(){
setInterval(swap, 5000);
});
aside from that, make sure to check your error console for errors, and for 404's indicating you might have bad image paths

Try this:
$(document).load(function() {
var count = -1;
var images = ['images/image1.jpg', 'images/image2.jpg', 'images/image3.jpg'];
setInterval(swap, 5000);
function swap() {
var img = images[++count % images.length];
$('.jumbotron').css('background', '#7da7d8 url(' + img + ') no-repeat center center !important');
console.log(img);
}
});

I don't think change css is a good idea, you may define some classes, and dynamically change the classes on the element!
html:
<div class="dynamicBg class1"></div>
<div class="dynamicBg class1"></div>
css:
.dynamicBg {
background-color: #7da7d8;
background-repeat: no-repeat;
background-position: center center;
}
.class1 {
background-image: url('images/image1.jpg');
}
.class2 {
background-image: url('images/rotunda2.jpg');
}
.class3 {
background-image: url('images/rotunda3.jpg');
}
.class4 {
background-image: url('images/rotunda4.jpg');
}
js:
$(function() {
var classStr = 'class1 class2 class3 class4',
classArr = classStr.split(' '), i = 0,
$dynamicBg = $('.dynamicBg');
setInterval(function() {
i = i > 3 ? 0 : i + 1;
$dynamicBg.removeClass(classStr).addClass(classArr[i]);
}, 5000);
});

Wait for the document to load:
$(document).load(function()
{
var count = -1;
var images=new Array("images/image1.jpg","images/image2.jpg","images/image3.jpg");
setInterval(swap, 5000);
function swap(){
$('.jumbotron').css("background", "#7da7d8 url("+images[++count % images.length]+") no-repeat center center !important");
console.log(images[++count % images.length]);
}
});

Whose fault is it? CSS or JavaScript?

The slider should function nice and smooth. Instead the animation isn't working smoothly. Here are the HTML, CSS and Javascript. I looked and looked and looked and can't find the clue. Rotating is not smooth, caption does not match the image, the last image doesn't even appear. (Here is the actual demo).
Here are some sample images showing a bit of the problem:
<IMG ID="slideshowPicturePlaceholder" src="/_layouts/images/GEARS_AN.GIF" style="display:none"/>
<div id="slideshowContentArea" style="display:none; width:255px;">
<div class="main_view">
<div class="window">
<div class="image_reel"> </div>
</div>
<div class="paging">
1
2
3
4
</div>
</div>
</div>
<style type="text/css">
/*--Main Container--*/
.main_view {
float: left;
position: relative;
}
/*--Window/Masking Styles--*/
.window {
height: 286px; width: 790px;
overflow: hidden; /*--Hides anything outside of the set width/height--*/
position: relative;
}
.image_reel {
position: absolute;
top: 0; left: 0;
}
.image_reel img {float: left;}
/*--Paging Styles--*/
.paging {
position: absolute;
bottom: 40px; right: -7px;
width: 178px; height:47px;
z-index: 100; /*--Assures the paging stays on the top layer--*/
text-align: center;
line-height: 40px;
background: url(paging_bg2.png) no-repeat;
display: none; /*--Hidden by default, will be later shown with jQuery--*/
}
.paging a {
padding: 5px;
text-decoration: none;
color: #fff;
}
.paging a.active {
font-weight: bold;
background: #920000;
border: 1px solid #610000;
-moz-border-radius: 3px;
-khtml-border-radius: 3px;
-webkit-border-radius: 3px;
}
.paging a:hover {font-weight: bold;}
</style>
<script type="text/javascript" src="_layouts/jquery/jquery-1.6.1.min.js"></script>
<script type="text/javascript" src="_layouts/jquery/jquery.cycle.all.js"></script>
<script type="text/javascript">
$(document).ready(function() {
function GetAllImages()
{
$("#slideshowPicturePlaceholder").css("display", "block");
var soapEnv = "<soapenv:Envelope xmlns:soapenv='http://schemas.xmlsoap.org/soap/envelope/'><soapenv:Body><GetListItems xmlns='http://schemas.microsoft.com/sharepoint/soap/'>";
soapEnv += "<listName>NewsRotator</listName>";
soapEnv += "<query><Query><OrderBy Override='TRUE'><FieldRef Name='Created' Ascending='FALSE' /></OrderBy></Query></query>";
soapEnv += "<viewFields><ViewFields><FieldRef Name='Title'/><FieldRef Name='ows_FileLeafRef'/><FieldRef Name='NewsLink'/><FieldRef Name='Description'/></ViewFields></viewFields><rowLimit></rowLimit>";
soapEnv += "</GetListItems></soapenv:Body></soapenv:Envelope>";
var port = window.location.port;
if (port.length <= 0)
port = "";
else
port = ":" + port;
var webservice = window.location.protocol + "//" + window.location.hostname + port + L_Menu_BaseUrl + "/_vti_bin/lists.asmx";
$.ajax(
{
url : webservice,
type : "POST",
dataType : "xml",
data : soapEnv,
complete : processQueryResults,
contentType : "text/xml; charset=utf-8",
error : function (xhr)
{
alert('Error! Status = ' + xhr.status);
}
});
}
function processQueryResults(xData, status)
{
var port = window.location.port;
if (port.length <= 0)
port = "";
else
port = ":" + port;
// Change the below to point to your image library
var imageURL = window.location.protocol + "//" + window.location.hostname + port + L_Menu_BaseUrl + "/Splash Image Rotator/";
var itemURL = window.location.protocol + "//" + window.location.hostname + port + L_Menu_BaseUrl + "/Splash Image Rotator/Forms/DispForm.aspx?ID=";
// $("#slideshowContentArea").html("")
$(xData.responseXML).find("z\\:row").each(function ()
{
var title = $(this).attr("ows_Title");
var headlines = $(this).attr("ows_Description");
var imageLink = imageURL + $(this).attr("ows_FileLeafRef").substring($(this).attr("ows_FileLeafRef").indexOf('#') + 1);
// // var itemLink = itemURL + $(this).attr("ows_ID");
var itemLink = $(this).attr("ows_NewsLink");
//var liHtml = "<div><a href='" + itemLink + "' target='_blank'><img src='" + imageLink + "'/></a></div>";
//var liHtml ="<a target='_blank' border='0' href='"+itemLink+"'><img src='"+ imageLink +"'/></a>";
var liHtml = "<a href='"+itemLink+"' target='_blank' border='0'><img src='" + imageLink +"'/></a><p>"+ title + " - " + headlines + "</p>";
$(".image_reel").append(liHtml);
});
$("#slideshowPicturePlaceholder").css("display", "none");
$("#slideshowContentArea").css("display", "block");
// Show the paging and activate its first link
$(".paging").show();
$(".paging a:first").addClass("active");
// Get size of the image, how many images there are, then determin the size of the image reel.
var imageWidth = $(".window").width();
var imageSum = $(".image_reel img").size();
var imageReelWidth = imageWidth * imageSum;
// Adjust the image reel to its new size
$(".image_reel").css(
{
'width' : imageReelWidth
}
);
// Paging and Slider Function
rotate = function ()
{
var triggerID = $active.attr("rel") - 1;
// Get number of times to slide
var image_reelPosition = triggerID * imageWidth;
// Determines the distance the image reel needs to slide
$(".paging a").removeClass('active');
// Remove all active class
$active.addClass('active');
// Add active class (the $active is declared in the rotateSwitch function)
// Slider Animation
$(".image_reel").animate(
{
left : - image_reelPosition
}
, 500);
}
;
// Rotation and Timing Event
rotateSwitch = function ()
{
play = setInterval(function ()
{
// Set timer - this will repeat itself every 7 seconds
$active = $('.paging a.active').next();
// Move to the next paging
if ($active.length === 0)
{
// If paging reaches the end...
$active = $('.paging a:first');
// go back to first
}
rotate();
// Trigger the paging and slider function
}
, 3000);
// Timer speed in milliseconds (7 seconds)
}
;
rotateSwitch();
// Run function on launch
// On Hover
$(".image_reel a").hover(function ()
{
clearInterval(play);
// Stop the rotation
}
, function ()
{
rotateSwitch();
// Resume rotation timer
} );
// On Click
$(".paging a").click(function ()
{
$active = $(this);
// Activate the clicked paging
// Reset Timer
clearInterval(play);
// Stop the rotation
rotate();
// Trigger rotation immediately
rotateSwitch();
// Resume rotation timer
return false;
// Prevent browser jump to link anchor
}
);
}
GetAllImages();
});
</script>

This issue might cause because of using position property in CSS.
position absolute is not necessary for '.image_reel' class, try with float:left.

Is this question still active? try to remove absolute position from your "image_reel" class