setting the browser's width as a variable in scss - javascript

How to get the browser's width to use it as a VARIABLE?
I know about the #media. what I need is getting the width and do some calculation to it
I tried using jQuery, it works great if the browser's width is FIXED, but when I resize the browse window it doesn't work
here is what I want to do:
html
<section id="slider">
<div class="slides">
<div class="slide">
<h1>silde 1</h1>
<p>Lorem ipsum dolor</p>
</div>
<div class="slide">
<h1>silde 2</h1>
<p>Lorem ipsum dolor</p>
</div>
</div> </section>
SCSS
$browser-width: (BROWSER WIDTH HERE) * .75 ;
#slider {
overflow: hidden;
position: relative;
margin: auto;
width: $browser-width;
.slides {
display: block;
margin: 0;
padding: 0;
width: 6000px;
}
.slide {
width: $browser-width;
display: inline-block;
float: left;
text-align: center;
}
}
What I did as a temporary solution is this:
using jQuery:
$(document).ready(function(){
var width = $(window).width() * .75;
var $slider = $('#slider');
var $slideContainer = $slider.find('.slides');
var $slides = $slideContainer.find('.slide');
$slider.css("width", width);
$slides.css("width", width);
/* function to make the slider here */
});
width = 75% doesn't work nor does width = 75vw

Never mind I found the problem
vw is the answer, it didn't work because I made this mistake in my sliding function
'margin-left' : '-=' + width
what I needed to do was this:
'margin-left' : '-=' + width + "vw"
never forget the units in your code .. lesson learned
here is my sliding function to those interested:
'use strict';
$(document).ready(function(){
var width = 75;
var animationSpeed = 1000;
var pause = 1000;
var currentSlide = 1;
var $slider = $('#slider');
var $slideContainer = $slider.find('.slides');
var $slides = $slideContainer.find('.slide');
var interval;
function startSlider(){
interval = setInterval(function() {
$slideContainer.animate({'margin-left' : '-='+width + "vw"}, animationSpeed, function(){
currentSlide++;
if (currentSlide === $slides.length){
currentSlide = 1;
$slideContainer.css('margin-left', 0);
}
});
}, pause);
}
function stopSlider(){
clearInterval(interval);
}
$slider.on('mouseenter', stopSlider).on('mouseleave', startSlider);
startSlider();
});

Related

How to set top:0(offset:0) when image come in window viewport?

I want to set top:0(offset:0) when image come in viewport on single scroll (like on every single scroll next image set to top 0 of image position or offset 0 of image) after completing scrolling all image, continue scrolling the page. Any one have any idea, JavaScript code for this?
Here is link for try out JsFiddle
<div class="main-div">
<div class="sticky-div">
<img src="https://images.unsplash.com/photo-1601140958046-ce3c75269438?ixlib=rb-
1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2134&q=80" />
</div>
<div class="sticky-div">
<img src="https://images.unsplash.com/photo-1559642147-97be7782c7b3?ixlib=rb-
1.2.1&auto=format&fit=crop&w=700&q=80">
</div>
<div class="sticky-div">
<img src="https://images.unsplash.com/photo-1527435292159-ba44021581fa?ixlib=rb-
1.2.1&auto=format&fit=crop&w=634&q=80">
</div>
</div>
.main-div {
box-sizing: border-box;
}
.sticky-div {
position: sticky;
top:0;
height:100vh;
}
if($(window).width() >= 1024){
(function($) {
var selector = ".home-product-slider .product-item";
var $slides = $(selector);
var currentSlide = 0;
var isAnimating = false;
var stopAnimation = function() {
setTimeout(function() {
isAnimating = false;
}, );
};
var bottomIsReached = function($elem) {
var rect = $elem[0].getBoundingClientRect();
return rect.bottom <= $(window).height();
};
var topIsReached = function($elem) {
var rect = $elem[0].getBoundingClientRect();
return rect.top >= 0;
};
document.addEventListener(
"wheel",
function(event) {
var $currentSlide = $($slides[currentSlide]);
if (isAnimating) {
event.preventDefault();
return;
}
var direction = -event.deltaY;
if (direction < 0) {
// next
if (currentSlide + 1 >= $slides.length) return;
if (!bottomIsReached($currentSlide)) return;
event.preventDefault();
currentSlide++;
var $slide = $($slides[currentSlide]);
var offsetTop = $slide.offset().top;
isAnimating = false;
$("html, body").animate(
{
scrollTop: offsetTop,
behavior: 'smooth'
},
stopAnimation
);
} else {
// back
if (currentSlide - 1 < 0) return;
if (!topIsReached($currentSlide)) return;
event.preventDefault();
currentSlide--;
var $slide = $($slides[currentSlide]);
var offsetTop = $slide.offset().top;
isAnimating = false;
$("html, body").animate(
{
// scrollTop: offsetTop
},
stopAnimation
);
}
{ passive: false }
},
);
})(jQuery);
//home page slider script end here
}
You're looking for scroll snapping. On the container that controls the scrolling set the scroll-snap-type: y mandatory rule. Here you say that there should be snapped in the y axis and that the snap should be honored without exceptions.
On the elements that you want snapped, use the scroll-snap-align property. Set this to start indicating that the start of the element that scrolls into view should fall on the snap grid.
Do beware, the combination of position: sticky and scroll snapping could lead to buggy behavior on Safari iOS. source
html,
body {
margin: 0;
overflow: hidden;
}
.main-div {
box-sizing: border-box;
width: 1000px;
height: 100vh;
max-width: 100%;
overflow-y: auto;
scroll-snap-type: y mandatory;
}
.sticky-div {
position: sticky;
top: 0px;
width: 100%;
max-height: 100%;
height: 750px;
scroll-snap-align: start;
}
img {
width: 100%;
height: 100%;
object-fit: cover;
}
<div class="main-div">
<div class="sticky-div">
<img src="https://images.unsplash.com/photo-1601140958046-ce3c75269438?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2134&q=80" />
</div>
<div class="sticky-div">
<img src="https://images.unsplash.com/photo-1559642147-97be7782c7b3?ixlib=rb-1.2.1&auto=format&fit=crop&w=700&q=80">
</div>
<div class="sticky-div">
<img src="https://images.unsplash.com/photo-1527435292159-ba44021581fa?ixlib=rb-1.2.1&auto=format&fit=crop&w=634&q=80">
</div>
<div class="sticky-div">
<img src="https://images.unsplash.com/photo-1601140958046-ce3c75269438?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2134&q=80" />
</div>
<div class="sticky-div">
<img src="https://images.unsplash.com/photo-1559642147-97be7782c7b3?ixlib=rb-1.2.1&auto=format&fit=crop&w=700&q=80">
</div>
<div class="sticky-div">
<img src="https://images.unsplash.com/photo-1527435292159-ba44021581fa?ixlib=rb-1.2.1&auto=format&fit=crop&w=634&q=80">
</div>
</div>

JQuery Scroll Speed

I'm trying to get an image to scroll slower than other elements on a site with the div class slow-image however the JQuery doesn't seem to do anything. Does anyone know why?
CSS:
.slow-image
{
position: absolute;
width: 25vw;
top: 10vw;
margin-left: 60vw;
}
HTML
<div class="slow-image"><img src="..."></div>
JQuery
$(document).ready(function(){
var $win = $(window);
$('slow-image').each(function(){
var scroll_speed = 0.8;
var $this = $(this);
$(window).scroll(function() {
var bgScroll = -(($win.scrollTop() - $this.offset().top)/ scroll_speed);
var bgPosition = 'center '+ bgScroll + 'px';
$this.css({ backgroundPosition: bgPosition });
});
});
});

How to scale Javascript slideshow with browser size

so I've done this little automatic slideshow in Javascript/jQuery. It works really well however I cannot figure out how to scale it with screen size, make it liquid. It's currently optimized for 1920x1080.
I've tried assigning this value (document.body.style.width) to the width variable with no luck, tried using percentages for the images instead of pixels and also tried using a very hackish fix with media queries all to no avail.
If anyone has an idea on how I might accomplish this do tell(again, I need it to scale with the browser window), Anyway, here's the code:
<div class="slider">
<ul class="slides">
<li class="slide"><img src="index/showcase.png" alt="#"/></li>
<li class="slide"><img src="index/pic4.png" alt="#"/></li>
<li class="slide"><img src="index/pic3.png" alt="#"/></li>
<li class="slide"><img src="index/pic5.png" alt="#"/></li>
<li class="slide"><img src="index/pic6.png" alt="#"/></li>
</ul>
</div>
.slider {
width: 1920px;
height: 780px;
overflow: hidden;
}
.slider .slides {
display: block;
width: 9600px;
height: 780px;
margin: 0;
padding: 0;
}
.slider .slide {
float: left;
list-style-type: none;
width: 1920px;
height: 780px;
}
<script type="text/javascript">
var myInterval = setInterval(function() {
console.log(new Date());
}, 1000);
</script>
<script type="text/javascript">
$(function() {
//configuration
var width = 1920;
var animationSpeed = 1000;
var pause = 4000;
var currentSlide = 1;
//cache DOM
var $slider = $('.slider');
var $slideContainer = $slider.find('.slides');
var $slides = $slideContainer.find('.slide');
var interval;
function startSlider() {
interval = setInterval(function() {
$slideContainer.animate({'margin-left': '-='+width}, animationSpeed,
function(){
currentSlide++;
if (currentSlide === $slides.length) {
currentSlide = 1;
$slideContainer.css('margin-left', 0);
}
});
}, pause);
}
// function stopSlider() {
// clearInterval(interval);
//}
//$slider.on('mouseenter', startSlider).on('mouseleave', startSlider);
startSlider();
});
</script>
vw and vh may be what you are after. Instead of width: 20% or width: 550px, you do width: 100vw to be 100% of the viewport's width (vh is viewport height). Then it should resize as the viewport resizes.

Creating a dynamic width items for carousel slider

I'm currently in the middle making my carousel responsive. So far I've managed to make it responsive only if the user resizes and refreshes browser only then it will resize programmatically. How can I make it resize without having to refresh the browser.
Update:
I tried working with the answers below. Currently it stays on a fixed value even if I resize browser. Inside my css there is no fixed value placed
$(document).ready(function() {
var sliderWidth = 0;
var sliderContainer = $('.slider-container');
var slider = $('.slider-container .slider');
var sliderItems = $('.slider li');
var sliderContainerWidth = sliderContainer.width();
sliderItems.width(sliderContainerWidth / 2);
$('.slider-container ul.slider').children().each(function() {
sliderWidth += $(this).outerWidth();
slider.width(sliderWidth + 1000);
});
$('.btns .prev').on('click', function() {
prevSlide();
})
function prevSlide() {
var sliderItemsWidth = sliderItems.width();
var leftIndent = parseInt($(sliderItems).css('left')) - sliderItemsWidth;
function animate() {
$('.slider-container .slider:not(:animated)').animate({
'left': leftIndent
}, 100)
}
animate();
}
})
.wrapper {
max-width: 1280px;
margin: 0 auto;
background-color: #ccc;
}
.wrapper .slider-container {
float: left;
position: relative;
overflow: hidden;
width: 100%;
background-color: beige;
}
.wrapper .slider-container .slider {
display: flex;
flex-wrap: wrap;
position: relative;
}
.wrapper .slider-container .slider li {
height: 300px;
background-color: #ccc;
position: relative;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="wrapper">
<div class="slider-container">
<ul class="slider">
<li>1</li>
<li>2</li>
<li>3</li>
</ul>
<ul class="btns">
<li class="prev">prev</li>
<li class="next">next</li>
</ul>
</div>
</div>
As per my comments, you can put the resizing bits into a function and call that on window resize:
$(document).ready(function() {
var sliderContainer = $('.slider-container');
var slider = $('.slider-container .slider');
var sliderItems = $('.slider li');
function resize() {
var sliderWidth = 0;
var sliderContainerWidth = sliderContainer.width();
sliderItems.width(sliderContainerWidth / 2);
$('.slider-container ul.slider').children().each(function() {
sliderWidth += $(this).outerWidth();
slider.width(sliderWidth + 1000);
});
}
$('.btns .prev').on('click', function() {
prevSlide();
})
function prevSlide() {
var sliderItemsWidth = sliderItems.width();
var leftIndent = parseInt($(sliderItems).css('left')) - sliderItemsWidth;
function animate() {
$('.slider-container .slider:not(:animated)').animate({
'left': leftIndent
}, 100)
}
animate();
}
resize(); // call onload
$(window).on('resize', function () {
resize(); // call when browser is resized
});
})

Stretched background stopped working

I am working on an experimental art site that involves a grid of images each scaled to the size of the viewport. The background for the page body should be one stretched image and it was working at one point but has stopped functioning. The background color shows and the image simply doesn't. However if the background-size CSS is turned off in Chrome inspector it shows up at it's own size positioned top and left...
I am guessing that having body contain a box which amounts to 5 viewports wide and 5 viewports tall is messing with what the body element's size is? Though allowing bg image to repeat didn't make it show up...
I resolved this by grabbing the screen width and height in the JavaScript and then setting background-size to those values like so:
$('body,html').css('background-size',the_width + 'px ' + the_height+'px');
But my question remains- why did the background-size:100% 100% stop working?
The page HTML looks like this only with 25 total divs and images.
<body>
<div id="box">
<div class="full" id="full_10">
<img src="home_tiles/10.jpg" width="800" height="600" title="10">
</div>
<div class="full" id="full_11">
<img src="home_tiles/11.jpg" width="800" height="600" title="11">
</div>
</div>
</body>
The CSS looks like this
* { padding: 0; margin: 0; }
html, body {
overflow:hidden;
background-color: #FF0000;
background-size: 100% 100%;
background-image:url(home_tiles/edge.jpg);
background-repeat:no-repeat;
}
img { display: block; }
#box {
position:absolute;
}
.full {
float:left;
}
The JavaScript sizing the images is
$(function() {
$('.full').hide();
var win = $(window),
fullscreen = $('.full'),
image = fullscreen.find('img'),
imageWidth = image.width(),
imageHeight = image.height(),
imageRatio = imageWidth / imageHeight;
var the_width;
var the_height;
var left_limit;
var right_limit;
function resizeImage() {
var winWidth = win.width(),
winHeight = win.height(),
winRatio = winWidth / winHeight;
if(winRatio > imageRatio) {
the_width = winWidth;
the_height = Math.round(winWidth / imageRatio);
} else {
the_width = Math.round(winHeight * imageRatio);
the_height = winHeight;
}
left_limit = the_width * -2;
right_limit = the_width * 2;
image.css({
width: the_width,
height: the_height
});
$('#box').css({
width: the_width * 5,
height: the_height * 5,
top: the_height * -2,
left: the_width * -2
});
}
win.bind({
load: function() {
resizeImage();
$('.full').show('slow');
},
resize: function() {
resizeImage();
}
});

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