Scroll effect to change opacity of each new div element - javascript

I am new to website design and have a question I'd like to ask. I have tried to use velocity.js to achieve this with failure. I am sure there is a rather simple css solution for what i want. I just want the previous div to "fade" and the new div that's scrolled to, to fade in with greater opacity. Open to any jQuery examples as well.
Here is my code for the section in question:
html:
<section id="services">
<h2 class="pb-5">Services We Offer</h2>
<div id="service1">
<h2>Service 1</h2>
</div>
<div id="service2">
<h2>Service 2</h2>
</div>
<div id="service3">
<h2>Service 3</h2>
</div>
</section>
css:
#services{
}
#service1{
height: 100vh;
background-color: rgb(44, 49, 90);
}
#service2{
height: 100vh;
background-color: #267481;
}
#service3{
height: 100vh;
background-color: #373f24;
}

I am sure there is a rather simple css solution for what i want
Unfortunately, that is not the case. CSS can perform animations, but if scrolling is involved in any way, JS is required.
You could use something like animate.css to control your CSS animations and then use wow.js to make them load on scroll.

As before stated by other answers and comments you cannot manipulate the scroll event in css alone but here is a simple jquery example that may help you. You can add and remove classes on scroll and you can add an animation to the css to control the opacity of your div.
$(window).on("scroll", function(){
var scrollTop = $(this).scrollTop();
$('.scrollDiv').each(function(){
var el = $(this);
var offsetTop = el.offset().top;
if(scrollTop > offsetTop){
el.addClass("scrolled");
}else{
el.removeClass("scrolled");
}
});
});
.scrollDiv{
height:100vh;
transition:opacity 500ms ease-in-out;
opacity:0.2;
}
.scrollDiv.scrolled{
opacity:1;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="scrollDiv" style="background:green;"></div>
<div class="scrollDiv" style="background:red;"></div>
<div class="scrollDiv" style="background:blue;"></div>
<div class="scrollDiv" style="background:yellow;"></div>

Related

hover one div in a series of similar, show the other

guys. I have several goods with description. I need "tile-description" appear when I hover over a "middle tile". Besides, I need a border around the "large-tile" on hover. Here is the mark-up and some js that I used, but it didn't work for me. Help me, please!
$(".middle-tile").mouseover(function(){
$(this).parent().siblings().css('opacity', 1);
});
$(".middle-tile").mouseout(function(){
$(this).parent().siblings().css('opacity', 0);
});
.tile-description{
position: absolute;
top: 100%;
background-color: white;
z-index: 10;
opacity: 0;
}
<div class="large-tile">
<div class="middle-tile">
<div class="tile-data">
<div class="tile-img"><img src="img/item-2.jpg" alt="" ></div>
<div class="tile-title">Title</div>
</div>
<button class="btn price">3 697</button>
</div>
<div class="tile-description">
<p>Some specs</p>
</div>
</div>
Use find instead of sibling when you use with parent or just sibling without parent as below:
$(this).parent().find('.tile-description').css('opacity', 1);
DEMO
Or
$(this).siblings('.tile-description').css('opacity', 1);
DEMO
Just use as CSS rule:
.middle-tile:hover + .tile-description {
opacity: 1;
}
-DEMO (using transition btw)

How to add `scroll` bar to a `div`, when its height as `auto`

In my container, there is multiple childrens, one of the 'div' getting appended by content in that.
when the total height of the container(parent) overflows, i would like to add the scroll bar to the div
is it possible to do by css?
here is the html :
<div id="container">
<div>
<h2>Heading</h2>
</div>
<div class="content">
</div>
<div class="footer">
Footer
</div>
</div>
<button>Add</button>
Js :
var p= "</p>Some testing text</p>";
$('button').click(function(){
$('.content').append(p);
});
jsfiddle
UPDATE
I don't want to put the over-flow to container, if so my footer will hide. i require my user need to see the add button always. I can't put my button out side of the container again there would be multiple content in to the container
UPDATE
I find a solution by js is it possible to made without using `js'?
jsSolution
Yes, it is possible to do in CSS. Simply add this CSS rule to #container:
overflow-y:scroll;
Alternatively add this to show the scroll bar only when necessary:
overflow-y:auto;
http://jsfiddle.net/doesfmnm/2/
var p= "</p>Some testing text</p>";
$('button').click(function(){
$('.content').append(p);
});
.content{
border:1px solid red;
height:300px;
width:200px;
overflow-y:auto;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="container">
<div>
<h2>Heading</h2>
</div>
<div class="content">
</div>
<div class="footer">
Footer
</div>
</div>
<button>Add</button>
Adding a little more explanation to what #Guy3000 said. You're appending (adding after) into an element with the class 'content'. Let's consider what that means for the parent .container class. By adding content into a div inside of the parent, your parent will need to either grow to compensate for the added content, or it will need to have a y-axis scroll that permits content longer than the height of the container.
This means you can approach the dilemma you're facing by adding height to the container element, or you can keep a fixed height on the container and have a frame with a y-axis scroll bar contain the added content.
Here is the solution i find :
<div id="container">
<div id="up">Text<br />Text<br />Text<br /></div>
<div id="down">
<div class="content"></div>
</div>
<div class="misc"><button>Add</button></div>
</div>
css :
#container { width: 300px; height: 300px; border:1px solid red;display:table;}
#up { background: green;display:table-row;height:0; }
#down { background:pink;display:table-row; overflow-y:auto}
.misc {
display:table-row;
background:gray;
height:30px;
}
.content {
overflow:auto;
height:100%;
}
Live
js solution :
http://jsfiddle.net/doesfmnm/4/

How to create sliding images on hover with Bootstrap 3?

I want the images to slide when I move my cursor over the image. Let's say I will have 3 pictures.
The images will slide only if I am on the DIV.
I am pretty sure that this could be achieved with carousel but I am not sure if it is the best way.
My code
<div class="container products">
<div class="row">
<div class="col-md-12">
<div class="row">
<div class="col-md-4">
<!-- Reveal Up Full -->
<div class="image revealUpFull">
<img src="http://lorempixel.com/360/180/technics/1" class="img-responsive"/>
<span class="title">Caption <br / ><br / > with some more info</span>
</div>
</div>
<div class="col-md-4">
<!-- Reveal Up Full -->
<div class="image revealUpFull">
<img src="http://lorempixel.com/360/180/technics/2" class="img-responsive"/>
<span class="title">Caption <br / ><br / > with some more info</span>
</div>
</div>
<div class="col-md-4">
<!-- Reveal Up Full -->
<div class="image revealUpFull">
<img src="http://lorempixel.com/360/180/technics/3" class="img-responsive"/>
<span class="title">Caption <br / ><br / > with some more info</span>
</div>
</div>
</div>
</div>
</div>
</div>
Demo : http://codepen.io/anon/pen/xbbNPM
Also I want the div to be clickable when my mouse is over.
I am pretty sure that this could be achieved with carousel but I am
not sure if it is the best way.
Why not? Because of you already use Bootstrap you should use its features in the first place.
also read http://getbootstrap.com/javascript/#carousel and find out that you can use multiple carousels on the same page:
Carousels require the use of an id on the outermost container (the
.carousel) for carousel controls to function properly. When adding
multiple carousels, or when changing a carousel's id, be sure to
update the relevant controls.
Cause you want to slide the carousal on mouseover(hover) you do not need any control, each of your carousels can code like that shown below:
<div class="col-md-4">
<!-- Reveal Up Full -->
<div id="carouse1" class="carousel slide" data-ride="carousel" data-interval="false">
<div class=" carousel-inner" role="listbox">
<div class="item active image revealUpFull">
<img src="http://lorempixel.com/360/180/technics/1">
<div class="carousel-caption">>Caption <br / ><br / > with some more info</div>
</div>
<div class="item image revealUpFull">
<img src="http://lorempixel.com/360/180/technics/2">
<div class="carousel-caption">>Caption <br / ><br / > with some more info</div>
</div>
<div class="item image revealUpFull">
<img src="http://lorempixel.com/360/180/technics/3">
<div class="carousel-caption">>Caption <br / ><br / > with some more info</div>
</div>
</div>
</div>
</div>
Notice that i'm not sure why you wrap your 3 md-4 columns in a md-12 column, you do not need a img-responsive class for your carousel's images.
After creating your HTML you should create a JavaScript trigger for the mouseover (i use mouse enter here):
<script>
$('.carousel').on('mouseenter',function(){ $( this ).carousel('next');})
</script>
Also I want the div to be clickable when my mouse is over.
As you can see in the above i have wrapped the images in a a tag. The only possible issue left will be that the .carousel-caption is not clickable and overlay the images. Use the following CSS code to make the .carousel-caption clickable:
<style>
.carousel-caption {
pointer-events: none;
}
</style>
Demo: http://www.bootply.com/bmLVbymbhj
update
The caption doesn't slide up anymore. Actually code has changed dramatically. I think I > need to integrate it to your code.
Yes, you should integrate the revealUpFull class. Let me know if you found any troubles by doing this, or formulate a new question on SO.
You should use something like that shown below:
.carousel-caption {
width: 100%;
height: 100%;
position: absolute;
background: rgb(0, 0, 0); /* fallback color */
background: rgba(0, 0, 0, 0.7);
text-align: center;
padding: 5px 0 4px;
font-size: 14px;
color: white;
-webkit-transition: all .3s ease-out;
-moz-transition: all .3s ease-out;
-ms-transition: all .3s ease-out;
-o-transition: all .3s ease-out;
transition: all .3s ease-out;
/* make image clickable */
pointer-events: none;
/* override bootstrap */
left: 0;
right: 0;
}
/* REVEAL UP FULL */
div.image.revealUpFull .carousel-caption {
height: 100%;
width: 100%;
bottom: -150px;
}
div.image.revealUpFull:hover img {
top: 0;
}
div.image.revealUpFull:hover .carousel-caption {
bottom: 0;
}
.carousel-caption {
pointer-events: none;
}
The left and right arrows which helps to slide are removed. This is what I want but
their blocks remains. So there is a space on the left and right.
I expect that the above issue is not related to the removed arrows but will be due to the size of the images. You are using image with a 360px width. As mentioned before the carousal's images are responsive by default. The CSS code sets a max-width:100% for these images, which means that they should not display larger than their original size. You can solve this by using larger images or give the image a with of 100% (mostly scaling up images will have quality issues). You can use the code that shown beneath:
.carousel-inner>.item>img, .carousel-inner>.item>a>img {
max-width: none;
width: 100%;
}
What I want is when my mouse is over the DIV, 3 pictures will slide automatically with
infinite loop. Between each of them there will be 2 secs
In fact you should be able to use the following:
$('.carousel').on('mouseenter',function(){ $( this ).carousel('cycle',{interval:2000});});
$('.carousel').on('mouseleave',function(){ $( this ).carousel('pauze')});});
But the carsousel already pause on mouseenter. I will post a solution for that later on.
The carousel api has a pause option (hover by default), you can set this option to an empty string to prevent the carousel stop cycling on hover.
You should remove the carousel data-attribute in your HTML to enable explicit JavaScript initialization:
The data-ride="carousel" attribute is used to mark a carousel as animating starting at page >load. It cannot be used in combination with (redundant and unnecessary) explicit JavaScript >initialization of the same carousel.
After that you can use:
$('.carousel').on('mouseenter',function(){ $( this ).carousel({interval:2000,pause:''}); });
$('.carousel').on('mouseleave',function(){ $( this ).carousel('pause'); });
When putting above three point together you will get something look like that show in the following demo: http://www.bootply.com/acGNORR3it
It looks like we don't need carousel for this simple feature. Javascript way will be easiest and fastest.
<script language="JavaScript">
var i = 0; var path = new Array();
// LIST OF IMAGES
path[0] = "http://lorempixel.com/750/375/sports/1/";
path[1] = "http://lorempixel.com/750/375/sports/2/";
path[2] = "http://lorempixel.com/750/375/sports/3/";
function swapImage() { document.slide.src = path[i];
if(i < path.length - 1) i++;
else i = 0; setTimeout("swapImage()",3000);
} window.onload=swapImage;
</script>
<img height="200" name="slide" src="" width="400" />
Demo: http://codepen.io/anon/pen/emmqYJ
Let me know if any easier solution exists.

$.animate() jQuery display:table without affecting unspecified spatial dimensions

When using jQuery's $.animate() on a display:table, spatial dimensions not specified to change will animate.
fiddle
In this case, width is specified, but height isn't, yet height jumps around. In this case, how can a display:table's height be kept from visually changing?
html
<div style="display:table; height:40px;">
<div style="display:table-row">
<div class="cell">
Short text
</div>
<div class="cell cellToAnimate">
Really long text
</div>
<div class="cell cellToAnimate">
Really, really, really long text
</div>
</div>
</div>
<div>
<button type="button" id="cellChanger">Change cells</button>
css
.cell{
display:table-cell;
}
js
$(document).ready(function () {
$('.cellToAnimate').hide();
$("#cellChanger").click(function(){
$('.cellToAnimate').stop(true,false).animate({
width: 'toggle',
opacity: 'toggle'
});
});
});
style a container with
display: block;
height: 40px;
overflow: hidden;

duplicate div then do a horizontal scroll

I'm trying to clone #main then put my ajax result there (hidden), after doing so I will make it scroll horizontally to the left hiding the current one then display the clone.
HTML:
<div class="container">
<div id="main">
<p>Click here to start</p>
</div>
</div>​
CSS:
#main{
width:460px;
min-height:200px;
background:#3F9FD9;
margin:0 auto;
}
.container {
position:relative;
}
​
Javascript:
$('#main').click(function(){
//clone.html(data)
var clone = $(this).clone().html('<p>Ajax loaded content</p>').css(
{position:'absolute',right:'0','margin-right':'-460px',top:0}
).attr('class','love').insertAfter($(this));
$(this).css({position:'relative'});
var width = $(window).width()-$(this).outerWidth()/2;
$('#main').animate({'left':'-'+width},4000);
});
but i'm stuck on the idea on how to make both #main animate to the left and position the second div at the center?
Fiddle
EDIT: Now i'm only stuck on how to animate the clone.
I sort of took a different approach to your question, is this kind of what you are looking for?
http://jsfiddle.net/3s7Fw/5/show
I thought, rather than do some animating ourselves, why not let jQuery's hide function do it for us? This could definitely be made to work better, but it communicates the thought.
JavaScript
$('.container').on('click', '.loaded-content', function(){
$this = $(this);
//clone.html(data)
var clone = $this.clone().html('<p>Ajax loaded content</p>').attr("id", '');
$this.after(clone);
$this.hide('slow');
});​
HTML
<div class="container">
<div id="main" class="loaded-content">
<p>Click here to start</p>
</div>
</div>​
CSS
#main, .loaded-content{
width:460px;
min-height:200px;
background:#3F9FD9;
margin:0 auto;
float: left;
}
.container {
position:relative;
width: 920px;
}
​If this is not the desired functionality, then you might be interested in a slider. There are a number of good slider plugins already out there that you can use. The difficult part would probably be adding a addNewSlide function to your chosen slider, assuming it didn't already have one.

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