Creating Slider for showing multiple images

Creating Slider for showing multiple images - javascript

I am creating a slider using HTML, javascript, and CSS.
The problem I have it showing only the first two images (li) and not sliding to the other (li) elements.
I have the code of HTML as following:
<section id="cliens" class="cliens section-bg">
<div class="container">
<ul id="slider">
<li>
<div class="row" data-aos="zoom-in">
<div class="col-lg-2 col-md-4 col-6 d-flex align-items-center justify-content-center">
<img src="assets/img/clients/client-1.png" class="img-fluid" alt="">
</div>
<div class="col-lg-2 col-md-4 col-6 d-flex align-items-center justify-content-center">
<img src="assets/img/clients/client-2.png" class="img-fluid" alt="">
</div>
</div>
</li>
<li>
<div class="row" data-aos="zoom-in">
<div class="col-lg-2 col-md-4 col-6 d-flex align-items-center justify-content-center">
<img src="assets/img/clients/client-1.png" class="img-fluid" alt="">
</div>
<div class="col-lg-2 col-md-4 col-6 d-flex align-items-center justify-content-center">
<img src="assets/img/clients/client-2.png" class="img-fluid" alt="">
</div>
</div>
</li>
<li>
<div class="row" data-aos="zoom-in">
<div class="col-lg-2 col-md-4 col-6 d-flex align-items-center justify-content-center">
<img src="assets/img/clients/client-1.png" class="img-fluid" alt="">
</div>
<div class="col-lg-2 col-md-4 col-6 d-flex align-items-center justify-content-center">
<img src="assets/img/clients/client-2.png" class="img-fluid" alt="">
</div>
</div>
</li>
</ul>
</div>
</section>
and the javascript code as following:
<script>
// Slide every slideDelay seconds
const slideDelay = 5000;
const dynamicSlider = document.getElementById("slider").value;
var curSlide = 0;
window.setInterval(()=>{
curSlide++;
if (curSlide === dynamicSlider.childElementCount) {
curSlide = 0;
}
// Actual slide
dynamicSlider.firstElementChild.style.setProperty("margin-left", "-" + curSlide + "00%");
}, slideDelay);
</script>
and the CSS as following:
<style>
#slider {
width: 100%;
height: 100%;
margin: 0 auto;
border: 10px solid transparent;
padding: 0px;
z-index: 100;
overflow: hidden;
white-space: nowrap;
box-sizing: border-box;
}
#slider > li {
width: 100%;
height: 100%;
position: relative;
display: inline-block;
overflow: hidden;
font-size: 15px;
font-size: initial;
line-height: normal;
transition: all 0.5s cubic-bezier(0.4, 1.3, 0.65, 1); /* Slide css animation */
background-size: cover;
vertical-align: top;
box-sizing: border-box;
white-space: normal;
}
</style>

1: You are trying to get the value of slider but slider does not have any value.
2: You are trying to define a non css value in line 14 (margin-left -000% are trying to do what?)
3: I think you missed up some lines of code, cause this code even runs...
I know what you want to do, but you need to specify a higher z-index for ul and lowers for li then make a "animation" with the li changing its positions.
I made a very simple slider without any animation, you can use it in your code if you want.
<!DOCTYPE html>
<html>
<head>
<style>
#img
{
transition: linear 2s;
width: 500px;
height: 500px;
}
</style>
<title>Page Title</title>
</head>
<body>
<img src="https://images.unsplash.com/photo-1448375240586-882707db888b?ixlib=rb-1.2.1&ixid=MXwxMjA3fDB8MHxzZWFyY2h8MXx8Zm9yZXN0fGVufDB8fDB8&auto=format&fit=crop&w=600&q=60" id="img">
<script>
var counter = 0;
var t;
window.onload = function() {setInterval(change, 5000);}
function change()
{
var imgs = ['https://images.unsplash.com/photo-1473448912268-2022ce9509d8?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=1025&q=80', 'https://images.unsplash.com/photo-1519821172144-4f87d85de2a1?ixid=MXwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHw%3D&ixlib=rb-1.2.1&auto=format&fit=crop&w=1231&q=80', 'https://images.unsplash.com/photo-1448375240586-882707db888b?ixlib=rb-1.2.1&ixid=MXwxMjA3fDB8MHxzZWFyY2h8MXx8Zm9yZXN0fGVufDB8fDB8&auto=format&fit=crop&w=600&q=60'];
if(counter === 3)
{ counter = 0; }
else
{
document.getElementById('img').src = imgs[0 + counter];
counter++;
}
}
</script>
</body>
</html>
If you fix these errors I can give you the entire answer.
Hope I helped!

Related

Second div does not show on mouseover

I have a problem, where I wish to toggle two divs (each in a column of their own), when a mouse covers over an element on page.
At this point only div (.text_2) reacts when .item-2 is hovered, but I also need text.2.2 to react, and appear (this div is placed in the next column).
I have tried a couple of different things in order to make this work. for example this
$('.item-2').hover(function() {
$('.text_2').toggleClass('hide_default');
}, function(){
$('.button-rounded').toggleClass('hide_default') {
$('.text_2.2').toggleClass('hide_default');
});
});
Here's my code so far
$(".item-1").hover(function(){
$('#text_1').toggleClass('hide_default');
}, function(){
$('#text_1').toggleClass('hide_default');
});
$(".item-2").hover(function(){
$('.text_2').toggleClass('hide_default');
}, function(){
$('.text_2').toggleClass('hide_default');
});
/* Body */
* {
margin: auto;
padding: o;
}
html, body {
margin:0;
padding:0;
}
/* Header */
#main{
overflow: auto;
margin-top: 25px;
margin-bottom: 50px;
}
/* Contacts */
#contact{
text-align: center;
margin-bottom: 25px;
font-size: 27px;
font-family: 'Times New Roman';
color: red;
}
#About{
margin: 50px;
}
/* Slider */
.slider {
display: grid;
grid-template-columns: 25% 25% 25% 25%;
background-color: white; color: #000;
font-size: 27px;
min-height: 100px;
margin-top: -100px;
clear: both;
transition: all 1s;
overflow: hidden;
border-top: 1px solid #e6e6e6;
position: fixed;
z-index: 10001;
left: 0;
right: 0;
bottom: 0;
padding: 0 18px;
transition: transform 300ms ease-out;
}
/* New slider */
#container_1{
display: grid;
grid-template-columns: 20% 20% 20% 20% 20%;
justify-items: center;
grid-gap: 20px;
}
.hide_default {
display: none;
}
#hide_default_2 {
display: none;
}
<!DOCTYPE html>
<html>
<head>
<title>Sofia Bordoni</title>
<link rel="stylesheet" type="text/css" href="stylesheet.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<div id="main">
<div id="contact">
<div class="item item-1">
Sofia Bordoni
sofiabordoni#gmail.com
0045 9164 6938
About
</div>
</div>
<div id="container_1">
<div class="item" data-target="#text_2">
<img class="Image" src="Images/SgDOoMc9ShRg0Zpr.png" width="200px">
</div>
<div class="item" data-target="#text_3">
<img class="Image" src="Images/Merry Christmas NC-kopi.gif" width="175px">
</div>
<div class="item" data-target="#text_4">
<img class="Image" src="Images/poster_mockup_MD1-kopi 2.jpg" width="250px">
</div>
<div class="item" data-target="#text_5">
<img class="Image" src="Images/2Tecnica_MENU_bAGLIONI_DROGHERIA_CREATIVA-kopi 2.png" width="300px">
</div>
<div class="item" data-target="#text_6">
<img class="Image" src="Images/Sofia_Bordoni_Portfolio_Tassinari_Vetta-7.png" width="350px">
</div>
<div class="item" data-target="#text_7">
<img class="Image" src="Images/Snooze Bed Linen 200x2201.png" width="250px">
</div>
<div class="item" data-target="#text_8">
<img class="Image" src="Images/plakat.png" width="250px">
</div>
<div class="item" data-target="#text_9">
<img class="Image" src="Images/mani-sito_2.png" width="250px">
</div>
<div class="item" data-target="#text_10">
<img class="Image" src="Images/Sofia_Bordoni_Portfolio-3.png" width="250px">
</div>
<div class="item" data-target="#text_11">
<img class="Image" src="Images/Imprint Towel 70x1402-kopi.png" width="200px">
</div>
<div class="item" data-target="#text_12" >
<img class="Image" src="Images/Skærmbillede 2020-04-29 kl. 11.37.09 kopi.png" width="350px">
</div>
<div class="item" data-target="#text_13" >
<img class="Image" src="Images/Holiday_Greeting_Main_NY-kopi.jpg" width="175px">
</div>
<div class="item" data-target="#text_14" >
<img class="Image" src="Images/Skærmbillede 2020-04-15 kl. 14.49.35.png" width="350px">
</div>
<div class="item" data-target="#text_15" >
<img class="Image" src="Images/Betafactory.gif" width="450px">
</div>
<div class="item" data-target="#text_16" >
<img class="Image" src="Images/330393_Normann_Copenhagen_Christmas_Candle_2018_Black_01.png" width="150px">
</div>
</div>
</div>
<div class="slider" style="max-height: 100vh max-height:70px;">
<div class="nav-item column column-1">
<p class="hide_default" id="text_1" style="color: #3333ff">
I love the memory of my childhood, that was full of colors, paper, pencils, and handcraft works. Developing an obsession towards various creative fields. Photography, developing analog photos. Architecture, seeing buildings as shapes, volumes and material combinations. Typography, as well as observing letters as shapes with an entrenched character. Upon realizing that graphic design is the field that was capable to bring together all of these passions I followed them with enthusiasm.
</p>
<p class="hide_default" id="text_2" style="color: blue">
Category: Objects
</p>
</div>
<div class="nav-item column column-2">
<p class="hide_default" id="text_2.2" style="color: blue">
Project: Normann Copenhagen Christmas Collection
<br>
Candle
</p>
</div>
<div class="nav-item column column-3">
</div>
<div class="nav-item column column-3">
</div>
</div>
<script src="Onhover.js"></script>
<script src="HoverColor.js"></script>
</body>
</html>

You've already got the structure in the HTML from the previous answer I provided to use the data-target to genericise the logic and keep it DRY.
As such you just need to amend the selector in the data-target to match both the #text_2 and #text_2.2 element. Note that the . in the latter selector will need to be escaped so that it's not interpreted as a class selector.
$(".item").hover(function() {
$(this.dataset.target.replace('.', '\\.')).toggleClass('hide_default');
});
* {
margin: auto;
padding: o;
}
html,
body {
margin: 0;
padding: 0;
}
#main {
overflow: auto;
margin-top: 25px;
margin-bottom: 50px;
}
#contact {
text-align: center;
margin-bottom: 25px;
font-size: 27px;
font-family: 'Times New Roman';
color: red;
}
#About {
margin: 50px;
}
.slider {
display: grid;
grid-template-columns: 25% 25% 25% 25%;
background-color: white;
color: #000;
font-size: 27px;
min-height: 100px;
margin-top: -100px;
clear: both;
transition: all 1s;
/* overflow: hidden; */
border-top: 1px solid #e6e6e6;
position: fixed;
z-index: 10001;
left: 0;
right: 0;
bottom: 0;
padding: 0 18px;
transition: transform 300ms ease-out;
}
#container_1 {
display: grid;
grid-template-columns: 20% 20% 20% 20% 20%;
justify-items: center;
grid-gap: 20px;
}
.hide_default {
display: none;
}
#hide_default_2 {
display: none;
}
<link rel="stylesheet" type="text/css" href="stylesheet.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="main">
<div id="contact">
<div class="item item-1" data-target="#text_1">
Sofia Bordoni sofiabordoni#gmail.com 0045 9164 6938
About
</div>
</div>
<div id="container_1">
<!-- note additional id selector in data-target here -->
<div class="item" data-target="#text_2, #text_2.2"><img class="Image" src="Images/SgDOoMc9ShRg0Zpr.png" width="200px"></div>
<div class="item" data-target="#text_3"><img class="Image" src="Images/Merry Christmas NC-kopi.gif" width="175px"></div>
<div class="item" data-target="#text_4"><img class="Image" src="Images/poster_mockup_MD1-kopi 2.jpg" width="250px"></div>
<div class="item" data-target="#text_5"><img class="Image" src="Images/2Tecnica_MENU_bAGLIONI_DROGHERIA_CREATIVA-kopi 2.png" width="300px"></div>
<div class="item" data-target="#text_6"><img class="Image" src="Images/Sofia_Bordoni_Portfolio_Tassinari_Vetta-7.png" width="350px"></div>
<div class="item" data-target="#text_7"><img class="Image" src="Images/Snooze Bed Linen 200x2201.png" width="250px"></div>
<div class="item" data-target="#text_8"><img class="Image" src="Images/plakat.png" width="250px"></div>
<div class="item" data-target="#text_9"><img class="Image" src="Images/mani-sito_2.png" width="250px"></div>
<div class="item" data-target="#text_10"><img class="Image" src="Images/Sofia_Bordoni_Portfolio-3.png" width="250px"></div>
<div class="item" data-target="#text_11"><img class="Image" src="Images/Imprint Towel 70x1402-kopi.png" width="200px"></div>
<div class="item" data-target="#text_12"><img class="Image" src="Images/Skærmbillede 2020-04-29 kl. 11.37.09 kopi.png" width="350px"></div>
<div class="item" data-target="#text_13"><img class="Image" src="Images/Holiday_Greeting_Main_NY-kopi.jpg" width="175px"></div>
<div class="item" data-target="#text_14"><img class="Image" src="Images/Skærmbillede 2020-04-15 kl. 14.49.35.png" width="350px"></div>
<div class="item" data-target="#text_15"><img class="Image" src="Images/Betafactory.gif" width="450px"></div>
<div class="item" data-target="#text_16"><img class="Image" src="Images/330393_Normann_Copenhagen_Christmas_Candle_2018_Black_01.png" width="150px"></div>
</div>
</div>
<div class="slider" style="max-height: 100vh max-height:70px;">
<div class="nav-item column column-1">
<p class="hide_default" id="text_1" style="color: #3333ff">
I love the memory of my childhood, that was full of colors, paper, pencils, and handcraft works. Developing an obsession towards various creative fields. Photography, developing analog photos. Architecture, seeing buildings as shapes, volumes and material
combinations. Typography, as well as observing letters as shapes with an entrenched character. Upon realizing that graphic design is the field that was capable to bring together all of these passions I followed them with enthusiasm.
</p>
<p class="hide_default" id="text_2" style="color: blue">
Category: Objects
</p>
</div>
<div class="nav-item column column-2">
<p class="hide_default" id="text_2.2" style="color: blue">
Project: Normann Copenhagen Christmas Collection
<br> Candle
</p>
</div>
<div class="nav-item column column-3"></div>
<div class="nav-item column column-3"></div>
</div>
A better approach would be to remove the . in the id attribute completely, as it avoids confusion with class selectors. Then the JS can be made even more simple:
<div class="nav-item column column-2">
<p class="hide_default" id="text_2_2" style="color: blue">
Project: Normann Copenhagen Christmas Collection
<br> Candle
</p>
</div>
$(".item").hover(function() {
$(this.dataset.target).toggleClass('hide_default');
});

where should i add flex-direction property. should i add to the bootstrap row or column?

Here i have added my code samples before and after i have changed my code, but don't no what makes the difference and the images on my website came up after i have changed this piece of code.
======Before======
<div class="row p-0 m-0 h-100 card-container catalog ">
<!---Image----->
<div class="col-12 d-flex justify-content-center align-items-center image-wrap">
<img alt="{{ catalog.name }}" class="p-0 m-0 ghost-hidden" [src]="catalog.image" *ngIf="catalog.image">
</div>
<!-- name of Image-->
<div class="col-12 ghost-bg ghost-bg-dark catalog-wrap">
<h3 class="p-0 m-0 ghost-bar ghost-white g-w-80">
{{ catalog.name }}
</h3>
<h3 class="ghost-visible-element ghost-bar ghost-white g-w-50"></h3>
</div>
<!-- Icon--->
<div class="d-flex align-items-center justify-content-center more">
<i class="icon-arrow-slice"></i>
</div>
</div>
scss
.catalog {
padding: 5px;
height: 400px;
.image-wrap {
position: absolute;
left: 0;
flex-direction: column;
padding: 0;
height: 100%;
img {
width: auto;
max-width: 80%;
max-height: 100%;
&.pp-default-image {
width: 50%;
}
}
}
======After==============
====== Here i have moved Image text the first div=======
====== secondly i have moved flex-direction from my image-wrap class to category class========
<div class="row p-0 m-0 h-100 catalog-card-container catalog">
<!--- Image Text--->
<div class="col-12 ghost-bg ghost-bg-dark catalog-wrap">
<h3 class="p-0 m-0 ghost-bar ghost-white g-w-80">
{{ catalog.name }}
</h3>
<h3 class="ghost-visible-element ghost-bar ghost-white g-w-50"></h3>
</div>
<!-- Image--->
<div class="col-12 d-flex justify-content-center align-items-center image-wrap">
<img alt="{{ catalog.name }}" class="p-0 m-0 ghost-hidden" [src]="catalog.image" [default]="setDefaultImg(catalog.uiMetadata.style)" *ngIf="catalog.image">
</div>
<!--Icon--->
<div class="d-flex align-items-center justify-content-center more">
<i class="icon-arrow-slice"></i>
</div>
</div>
scss
.category {
padding: 5px;
height: 400px;
flex-direction: column;
.image-wrap {
position: absolute;
left: 0;
// flex-direction: column;
padding: 0;
height: 100%;
img {
width: auto;
max-width: 80%;
max-height: 100%;
&.pp-default-image {
width: 50%;
}
}
}
i don't no what made the difference, after i have moved flex-direction images started showing up
can anyone please explain me what made the difference
i never asked questions on stack overflow along with code.. sorry for the inconvenience

Display popup image next to mouse

On my website I'm trying to create a popup of an hovered image so that when the user moves his mouse on the image, the image should appear in a popup in its original size size next to the mouse... something like the HooverZoom+ plugin for browsers...
Now my code kinda almost works... it shows the image in an popup but it centers it in the middle of the screen... how would could I make it so it shows it on the left or the right side of the mouse?
Im also usign Bootstrap for layout of the images
Here is my code and JSFiddle:
HTML:
<div id="page-content-wrapper">
<div class="container dodatki pb-5">
<div class="row text-center">
<div class="col-12 col-md-4 col-lg-4 popup"><img src="https://www.urbanconcepts.ph/wp/wp-content/uploads/2016/07/BR7130-watson-wardrobe-whitebg.jpg" class="img-fluid fr-fic fr-dii" alt="Poševni vrh omare">
<p class="dodatki-desc">Poševni vrh omare</p>
</div>
<div class="col-12 col-md-4 col-lg-4 popup"><img src="https://www.urbanconcepts.ph/wp/wp-content/uploads/2016/07/BR7130-watson-wardrobe-whitebg.jpg" class="img-fluid fr-fic fr-dii" alt="Kovinski podstavek omare">
<p class="dodatki-desc">Kovinski podstavek omare</p>
</div>
<div class="col-12 col-md-4 col-lg-4 popup"><img src="https://www.urbanconcepts.ph/wp/wp-content/uploads/2016/07/BR7130-watson-wardrobe-whitebg.jpg" class="img-fluid fr-fic fr-dii" alt="Sedežni podstavek omare">
<p class="dodatki-desc">Sedežni podstavek</p>
</div>
</div>
<div class="row text-center">
<div class="col-12 col-md-4 col-lg-4 popup"><img src="https://www.urbanconcepts.ph/wp/wp-content/uploads/2016/07/BR7130-watson-wardrobe-whitebg.jpg" class="img-fluid fr-fic fr-dii" alt="Kovinski podstavek brez nogice">
<p class="dodatki-desc">Kovinski podstavek brez nogice</p>
</div>
<div class="col-12 col-md-4 col-lg-4 popup"><img src="https://www.urbanconcepts.ph/wp/wp-content/uploads/2016/07/BR7130-watson-wardrobe-whitebg.jpg" class="img-fluid fr-fic fr-dii" alt="Kovinski podstavek z nastavljivo nogico">
<p class="dodatki-desc">Kovinski podstavek z regulirno nogico</p>
</div>
<div class="col-12 col-md-4 col-lg-4 popup"><img src="https://www.urbanconcepts.ph/wp/wp-content/uploads/2016/07/BR7130-watson-wardrobe-whitebg.jpg" class="img-fluid fr-fic fr-dii" alt="Viseča pregradna stena">
<p class="dodatki-desc">Viseča pregradna stena</p>
</div>
</div>
<div class="row text-center">
<div class="col-12 col-md-4 col-lg-4 popup"><img src="https://www.urbanconcepts.ph/wp/wp-content/uploads/2016/07/BR7130-watson-wardrobe-whitebg.jpg" class="img-fluid fr-fic fr-dii" alt="PVC etiketni okvir">
<p class="dodatki-desc">PVC etiketni okvir</p>
</div>
<div class="col-12 col-md-4 col-lg-4 popup"><img src="https://www.urbanconcepts.ph/wp/wp-content/uploads/2016/07/BR7130-watson-wardrobe-whitebg.jpg" class="img-fluid fr-fic fr-dii" alt="Obesna kljukica za v omaro">
<p class="dodatki-desc">Obesna kljukica</p>
</div>
<div class="col-12 col-md-4 col-lg-4 popup"><img src="https://www.urbanconcepts.ph/wp/wp-content/uploads/2016/07/BR7130-watson-wardrobe-whitebg.jpg" class="img-fluid fr-fic fr-dii" alt="PVC pladenj za čevlje">
<p class="dodatki-desc">PVC pladenj za čevlje</p>
</div>
</div>
</div>
</div>
SCSS:
html {
-webkit-text-size-adjust: 100%;
-ms-text-size-adjust: 100%;
overflow-x: hidden;
height: 100%;
}
body {
margin: 0;
font-size: 16px;
line-height: 1.428571429;
padding: 0;
height: 100%;
font-family: 'Montserrat', sans-serif;
}
#page-content-wrapper {
width: 100%;
position: absolute;
}
.dodatki {
img {
height: 10rem;
transition: all .2s ease-in-out;
&:hover {
transform: scale(1.4);
}
}
.dodatki-desc {
margin-top: 16px;
margin-bottom: 10px;
font-size: 0.8125rem;
color: #666666;
}
}
.show {
z-index: 999;
display: none;
.img-show {
width: 650px;
height: 650px;
background: #FFF;
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%,-50%);
overflow: hidden;
-webkit-box-shadow: 0 16px 24px 2px rgba(0,0,0,0.14), 0 6px 30px 5px rgba(0,0,0,0.12), 0 8px 10px -7px rgba(0,0,0,0.2);
box-shadow: 0 16px 24px 2px rgba(0,0,0,0.14), 0 6px 30px 5px rgba(0,0,0,0.12), 0 8px 10px -7px rgba(0,0,0,0.2);
img {
width: 100%;
height: 100%;
position: absolute;
top: 0;
left: 0;
}
}
}
JS:
$(document).ready(function() {
"use strict";
$(".popup img").mouseover(function () {
var $src = $(this).attr("src");
$(".show").fadeIn();
$(".img-show img").attr("src", $src);
});
$(".popup, .img-show").mouseleave(function () {
$(".show").fadeOut();
});
});
JS Fiddle
Thanks for your help in advance

For displaying images next to cursor you can use this one jQuery method
$(document).mousemove();
Example:
$(document).mousemove(function(e) {
$('.logo').offset({
left: e.pageX,
top: e.pageY + 20
});
});
See this fiddle for the working one https://jsfiddle.net/q1xc7vbg/
Cheers

For hover-zoom take a look here.
I hope i got you right now. When the mouse hovers the image (mouseover-event), you have to create and append a new element containing the image to the body. This should not be positioned over the original image in order to not trigger the mouseleave event immediately. Later on, when the user moves his mouse out of the small image, you can delete/remove the created element when the mouseleave-event triggers.
I would recommend to use an absolute positioning on the big-image element.

How to create a grid of photos where you can hover them and they will change into other photos?

I'm trying to create a grid of photos where you can hover over them and they will change into other images. I've tried placing the image on CSS as background image but when you hover, the other picture doesn't seem to be exactly the same size (when it actually is).
I also tried using two images method (one on top of the other) and it works well with only one image on the page but with a grid of images, it doesn't work because of the position: absolute.
The only way that I found that "sort of" works is by replacing one image for the other but then you don't have a smooth transition (fade into another image).
Here is the access to code pen (seems to work better):
Code:
css:
.pages-content {
max-width: 400px
}
.left {
padding-left: 5px;
}
.right {
padding-right: 5px;
}
.bottom {
padding-bottom: 10px;
}
img.a {
position: absolute;
left: 0;
top: 0;
z-index: 10;
transition: opacity 1s ease-in-out;
}
img.a:hover {
opacity: 0;
}
img.b {
position: absolute;
left: 0;
top: 0;
}
HTML:
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet"/>
<body>
<section class="container pages-content">
<div class="row">
<div class="col-md-12 bottom">
<img src="https://d1mwzmktacfw26.cloudfront.net/wp-content/uploads/2016/04/23105511/Frontier-400x200.jpg" alt="" class="img-fluid"/>
<!-- trying to use hover to change images
<img src="https://d1mwzmktacfw26.cloudfront.net/wp-content/uploads/2016/04/23105511/Frontier-400x200.jpg" alt="" class="img-fluid a"/>
<img src="http://www.tikbok.com/rahalat/wp-content/uploads/2011/08/1-400x200.jpg" alt="" class="img-fluid b"/> -->
</div>
</div>
<div class="row">
<div class="col-md-6 col-sm-12 right">
<img src="http://cheb-room.ru/uploads/cheb/2016/11/w9RC4W-QqXw-200x200.jpg" alt="" class="img-fluid" />
</div>
<div class="col-md-6 col-sm-12 bottom left">
<img src="http://cheb-room.ru/uploads/cheb/2016/11/w9RC4W-QqXw-200x200.jpg" alt="" class="img-fluid" />
</div>
</div>
<!-- Second block -->
<div class="row">
<div class="col-md-6 col-sm-12 right ">
<div class="row">
<div class="col-md-6 push-md-6 col-sm-12 bottom left">
<img src="http://www.animated-gifs.eu/category_cartoons/avatars-100x100-cartoons-spongebob/0038.gif" alt="" class="img-fluid"/>
</div>
<div class="col-md-6 pull-md-6 col-sm-12 bottom right">
<img src="http://www.animated-gifs.eu/category_cartoons/avatars-100x100-cartoons-spongebob/0038.gif" alt="" class="img-fluid"/>
</div>
<div class="col-md-12 bottom">
<img src="http://donsmaps.com/clickphotos/dolnivi200x100.jpg" alt="" class="img-fluid" />
</div>
<div class="col-md-12 bottom">
<img src="http://markcarson.com/images/SunBird-7-200x200.png" alt="" class="img-fluid" />
</div>
</div>
</div><!--./col-md-6-->
<div class="col-md-6 bottom col-sm-12 left project-image">
<img src="http://www.bravacasa.rs/wp-content/uploads/2014/03/Odlaganje-stvari-za-decu-slika-7-505x1025.jpg" width="200" class="img-fluid"/>
</div>
</div><!--./block 2-->
</section>
</body>

I am not sure if this is what you were looking for.
.row {
display: flex;
flex-direction: row;
}
.flex-item {
min-width: 200px;
min-height: 200px;
}
.hover-img {
transition: background-image 1s ease-in-out;
background-size: cover;
}
.img-1 {
background-image: url(https://d1mwzmktacfw26.cloudfront.net/wp-content/uploads/2016/04/23105511/Frontier-400x200.jpg);
width: 400px;
/*
height: 200px;*/
flex-grow: 2;
}
.img-1:hover {
background-image: url(http://www.tikbok.com/rahalat/wp-content/uploads/2011/08/1-400x200.jpg);
}
.img-2 {
background-image: url(http://cheb-room.ru/uploads/cheb/2016/11/w9RC4W-QqXw-200x200.jpg);
/* width: 200px;
height: 200px;*/
flex-grow: 1;
}
.img-2:hover {
background-image: url(http://www.animated-gifs.eu/category_cartoons/avatars-100x100-cartoons-spongebob/0038.gif);
}
.img-3 {
background-image: url(http://donsmaps.com/clickphotos/dolnivi200x100.jpg);
/*width: 200px;
height: 200px;*/
flex-grow: 1;
}
.img-3:hover {
background-image: url(http://markcarson.com/images/SunBird-7-200x200.png);
}
.img-4 {
/*max-width:400px;*/
flex-grow: 2;
}
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" rel="stylesheet" />
<body>
<section class="container pages-content">
<div class="row">
<div class="flex-item hover-img img-1"></div>
<div class="flex-item hover-img img-2"></div>
<div class="flex-item hover-img img-3"></div>
<img src="http://www.bravacasa.rs/wp-content/uploads/2014/03/Odlaganje-stvari-za-decu-slika-7-505x1025.jpg" class="flex-item img-4" />
</div>
</section>
</body>

Ok so I have been playing around with your problem for a bit. I came up with this solution: http://codepen.io/anon/pen/Rpwewg. It appears to be working the way you want it. I ran into two issues figuring it out.
The first one was that you are using the position: absolute on the images. it will place the image relative to the closest parent that is relatively positioned. Since in your example the parent div was a bootstrap class I decided to create a new div with position: relative assigned to it and gave it a class of images-wrapper.
Now I just needed to overlap the images over each other, just as you did in the example. But...If I make both images position: absolute the browser won't have an height assigned to the images-wrapper class. Therefore I decided to give one of the images a relative position and the other one absolute so it would overlap.
hope it helps :).
html
<body>
<section class="container pages-content">
<div class="row">
<div class="col-md-12 bottom">
<!--img src="https://d1mwzmktacfw26.cloudfront.net/wp-content/uploads/2016/04/23105511/Frontier-400x200.jpg" alt="" class="img-fluid"/-->
<!-- trying to use hover to change images-->
<div class="images-wrapper"><img src="https://d1mwzmktacfw26.cloudfront.net/wp-content/uploads/2016/04/23105511/Frontier-400x200.jpg" alt="" class="img-fluid a"/>
<img src="http://www.tikbok.com/rahalat/wp-content/uploads/2011/08/1-400x200.jpg" alt="" class="img-fluid b"/> <!---->
</div>
</div>
</div>
<div class="row">
<div class="col-md-6 col-sm-12">
<div class="images-wrapper"><img src="https://d1mwzmktacfw26.cloudfront.net/wp-content/uploads/2016/04/23105511/Frontier-400x200.jpg" alt="" class="img-fluid a"/>
<img src="http://www.tikbok.com/rahalat/wp-content/uploads/2011/08/1-400x200.jpg" alt="" class="img-fluid b"/>
</div>
</div>
<div class="col-md-6 col-sm-12 bottom left">
<img src="http://cheb-room.ru/uploads/cheb/2016/11/w9RC4W-QqXw-200x200.jpg" alt="" class="img-fluid" />
</div>
</div>
<!-- Second block -->
<div class="row">
<div class="col-md-6 col-sm-12 right ">
<div class="row">
<div class="col-md-6 push-md-6 col-sm-12 bottom left">
<img src="http://www.animated-gifs.eu/category_cartoons/avatars-100x100-cartoons-spongebob/0038.gif" alt="" class="img-fluid"/>
</div>
<div class="col-md-6 pull-md-6 col-sm-12 bottom right">
<img src="http://www.animated-gifs.eu/category_cartoons/avatars-100x100-cartoons-spongebob/0038.gif" alt="" class="img-fluid"/>
</div>
<div class="col-md-12 bottom">
<img src="http://donsmaps.com/clickphotos/dolnivi200x100.jpg" alt="" class="img-fluid" />
</div>
<div class="col-md-12 bottom">
<img src="http://markcarson.com/images/SunBird-7-200x200.png" alt="" class="img-fluid" />
</div>
</div>
</div><!--./col-md-6-->
<div class="col-md-6 bottom col-sm-12 left project-image">
<img src="http://www.bravacasa.rs/wp-content/uploads/2014/03/Odlaganje-stvari-za-decu-slika-7-505x1025.jpg" width="200" class="img-fluid"/>
</div>
</div><!--./block 2-->
</body>
css
.pages-content {
max-width: 400px
}
.left {
padding-left: 5px;
}
.right {
padding-right: 5px;
}
.bottom {
padding-bottom: 10px;
}
img.a {
position: absolute;
z-index: 10;
opacity: 1;
transition: opacity 1s ease-in-out;
}
img.a:hover {
opacity: 0;
}
img.b {
z-index: 9;
opacity: 1;
position: relative;
}
.images-wrapper{
position: relative;
}

The best way to achieve this is to set the images as background and hover background, then set background-size:cover to keep the image display "uniform" in size. No need for Javascript code at all.
Here, I forked your Codepen for a demo. I only applied the hover effect to the first image for you to check out. Let me know if it helps.
For the "smooth transition", CSS also takes care of it for you. Feel free to change the div width (and height) to serve your needs better:
div.row div {
cursor: pointer;
transition: ease 0.5s all;
}
div.row .col-md-12:first-child {
background-image: url('https://d1mwzmktacfw26.cloudfront.net/wp-content/uploads/2016/04/23105511/Frontier-400x200.jpg');
background-size: cover;
height: 200px;
margin-bottom: 10px;
}
div.row .col-md-12:first-child:hover {
background-image: url('http://donsmaps.com/clickphotos/dolnivi200x100.jpg');
}

How to center a bootstrap container inside a div?

I am using bootstrap grid to show a image gallery. Now I want to center the entire bootstrap .container within a div (.abc). Here is the link to the fiddle - http://jsfiddle.net/tn3j2kos/
Code below -
.abc {
margin: auto;
width: 96%;
background-color: #ffffcc;
}
.imgframe {
position: relative;
display: inline-block;
width: 120px;
height: 80px;
margin: 5px;
}
div img {
position: absolute;
top: 0;
bottom: 0;
left: 0;
right: 0;
display: inline-block;
height: 100%;
max-height: 70px;
max-width: 110px;
margin: auto;
}
<head>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" />
</head>
<body>
<div class="abc">
<div class="container">
<div class="row">
<div class="imgframe col-lg-2 col-md-3 col-sm-6 col-xs-12 thumbnail">
<img src="https://www.google.co.in/images/srpr/logo11w.png" />
</div>
<div class="imgframe col-lg-2 col-md-3 col-sm-6 col-xs-12 thumbnail">
<img src="https://mozorg.cdn.mozilla.net/media/img/styleguide/identity/firefox/usage-logo.png?2013-06" />
</div>
<div class="imgframe col-lg-2 col-md-3 col-sm-6 col-xs-12 thumbnail">
<img src="https://www.google.co.in/images/srpr/logo11w.png" />
</div>
<div class="imgframe col-lg-2 col-md-3 col-sm-6 col-xs-12 thumbnail">
<img src="https://g.twimg.com/About_logoUsage.png" />
</div>
<div class="imgframe col-lg-2 col-md-3 col-sm-6 col-xs-12 thumbnail">
<img src="https://g.twimg.com/About_logoUsage.png" />
</div>
</div>
</div>
</div>
</body>
More details - The sample in fiddle has five thumbnails. I want the thumbnails within the div .row to be left aligned. And the group of thumbnails (inside div .container) to be center aligned inside div .abc.
My several attempts have failed, and I posted the code for my last attempt.
EDIT - Don't bother running code snippet inside SO as it is rendering incorrectly. Use js fiddle I posted at top instead.
EDIT 2 - Perhaps I can explain what I want to achieve through this equation container_width = no_of_thumb*(thumb_width+margin*2).
EDIT 3 - How it appears-
How I want it to appear-

I think you are misunderstanding the workings of bootstrap a bit:
.container should be your outer most wrapper, or you could use .container-fluid in stead
.col- classes determine width and padding/margin of the block they are aplied to. Messing with these values will break the responsiveness. Use a wrapper inside those .col blocks in stead if you need to play with dimensions.
why are you positioning those images absolute? I don't see what you are trying to achieve...
I went ahead and cleaned up your fiddle a bit. I think this may be what you are after: http://jsfiddle.net/tn3j2kos/4/embedded/result/
HTML:
<div class="abc">
<div class="container-fluid">
<div class="row">
<div class="col-lg-2 col-md-3 col-sm-6">
<img class='img-responsive' src=#" />
</div>
....
CSS:
.abc {
background-color: #ffffcc;
padding: 0 4%;
}

just set .container to display: inline-block and call text-align: center on .abc
FIDDLE

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