Adjust a Div's Style Depending on Another Div's Presence? - javascript

In the snippet provided, I have 3 sections: The first contains a single image, the second has two images, and the last one has no images.
I would like for the .image class within the first section to be 100% in width only if there is no other .image div present.
However, once there is another .image div present, (as shown in the second section), I would like it to default back to 50% width.
How should I execute this?
$(function() {
$('.container > .section').each(function() {
if (!$(this).find(".image").length) {
$(this).before('<div class="noimage">No images to display.</div>');
}
});
});
body {
font-size: 16px;
margin: 0;
padding: 0;
border: 0;
}
h1 {
font-size: 22px;
margin-top: 0;
margin-bottom: 10px;
}
.container {
box-sizing: border-box;
overflow: auto;
}
.image {
float: left;
display: block;
width: 50%;
line-height: 0;
}
.image img {
width: 100%;
height: auto;
}
.container {
margin: 0 auto;
max-width: 300px;
border: 1px solid lightgrey;
padding: 10px;
display: block;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!-- 1 Image -->
<div class="container">
<h1>Section With 1 Image:</h1>
<div class="section">
<div class="image"><img src="https://freeiconshop.com/wp-content/uploads/edd/pear-flat.png"></div>
</div>
</div>
<!-- 2 Images -->
<div class="container">
<h1>Section With 2 Images:</h1>
<div class="section">
<div class="image"><img src="https://freeiconshop.com/wp-content/uploads/edd/ice-cream-cone-flat.png"></div>
<div class="image"><img src="https://freeiconshop.com/wp-content/uploads/edd/orange-flat.png"></div>
</div>
</div>
<!-- No Images -->
<div class="container">
<h1>Section With No Images:</h1>
<div class="section"></div>
</div>

You could display the section as a table and the div.image as a table-cell. Then the image would resize according to the number of "cell's" (div.image's) present.
div.container{
display: 100%;
}
div.section{
width: 100%;
display: table;
}
div.section div.image{
display: table-cell;
}
div.section div.image img{
width: 100%;
height: auto;
}
Here's a JSFiddle:
https://jsfiddle.net/ColiniloC/Lnnkpx6L/

Figured out a simpler solution with flexbox:
$(function() {
$('.container > .section').each(function() {
if (!$(this).find(".image").length) {
$(this).before('<div class="noimage">No images to display.</div>');
}
});
});
body {
font-size: 16px;
margin: 0;
padding: 0;
border: 0;
}
h1 {
font-size: 22px;
margin-top: 0;
margin-bottom: 10px;
}
.container {
box-sizing: border-box;
margin: 0 auto;
max-width: 300px;
border: 1px solid lightgrey;
padding: 10px;
display: block;
}
.section {
display: flex;
flex-wrap: wrap;
overflow: hidden;
align-items: center;
margin: 0 -5px;
}
.image {
flex: 1 1 50%;
line-height: 0;
width: 100%;
padding: 0 5px;
box-sizing: border-box;
}
.container .image:nth-of-type(n+3) {
padding-top: 10px;
}
.image img {
width: 100%;
height: auto;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!-- 1 Image -->
<div class="container">
<h1>Section With 1 Image:</h1>
<div class="section">
<div class="image"><img src="https://freeiconshop.com/wp-content/uploads/edd/pear-flat.png"></div>
</div>
</div>
<!-- 2 Images -->
<div class="container">
<h1>Section With 2 Images:</h1>
<div class="section">
<div class="image"><img src="https://freeiconshop.com/wp-content/uploads/edd/pear-flat.png"></div>
<div class="image"><img src="https://freeiconshop.com/wp-content/uploads/edd/ice-cream-cone-flat.png"></div>
</div>
</div>
<!-- 4 Images -->
<div class="container">
<h1>Section With 4 Images:</h1>
<div class="section">
<div class="image"><img src="https://freeiconshop.com/wp-content/uploads/edd/pear-flat.png"></div>
<div class="image"><img src="https://freeiconshop.com/wp-content/uploads/edd/ice-cream-cone-flat.png"></div>
<div class="image"><img src="https://freeiconshop.com/wp-content/uploads/edd/orange-flat.png"></div>
<div class="image"><img src="https://freeiconshop.com/wp-content/uploads/edd/burger-flat.png"></div>
</div>
</div>
<!-- No Images -->
<div class="container">
<h1>Section With No Images:</h1>
<div class="section"></div>
</div>

Related

Problem when using display none with divs and footer

Ok, let's say that I have two buttons, a container with two divs and below I have my footer, like this:
<button id="bt1">Show all</button>
<button id="bt2">Show curses</button>
<div class="container">
<div class="one"></div>
<div class="two"></div>
</div>
<footer></footer>
I'm displaying content inside my divs. Div "one" has more height, much more. In order to hide div "two" and don't overlap content, I use opacity:0.
I have two buttons, to show or to hide div "one" or "two" (using jQuery).
But if I only use opacity:0 to hide div "one" when I show div "two", the page leaves a big space empty (due to div "one" has more height than div "two"). As here:
enter image description here
So I decided to use display:none to hide div "one", in order to don't leave space and just show the necessary space for div "two". But my footer goes up!! And overlaps content with div "two".
Here is the image: enter image description here
How can I solve this? Any ideas? I realized that my footer moves because not finding the content of div "one", it goes up. Sorry for my english haha
Here I leave you guys an excelent example of what happens to me, you can COPY and run:
HTML:
var cont_all = $('.one');
var bt1 = $('#bt1');
var cont_curses = $('.two');
var bt2 = $('#bt2');
bt2.click(function(){
cont_all.css('display', 'none');
cont_curses.css('opacity', '1');
});
bt1.click(function(){
cont_curses.css('opacity', '0');
cont_all.css('display', 'flex');
});
h2 {
text-align: center;
font-size: 40px;
}
.container {
margin-top: 50px;
position: relative;
height: auto;
padding-bottom: 50px;
}
.one, .two {
display: flex;
justify-content: space-around;
align-items: center;
flex-wrap: wrap;
height: auto;
}
.one {
overflow: hidden;
}
.two {
width: 100%;
position: absolute;
top: 0px;
opacity: 0;
}
.chart {
width: 30%;
height: 200px;
margin: 15px;
background: #2096CE;
}
.curse {
width: 30%;
height: 200px;
margin: 15px;
background: #23AD5A;
}
footer {
height: 200px;
background: black;
color: white;
display: flex;
justify-content: center;
text-align: center;
}
p {
text-align: center;
font-size: 35px;
margin: auto 0;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<header>
<h2>Problem with divs</h2>
</header>
<button id="bt1">Show all</button>
<button id="bt2">Show curses</button>
<div class="container">
<div class="one">
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
</div>
<div class="two">
<div class="curse"></div>
<div class="curse"></div>
<div class="curse"></div>
<div class="curse"></div>
</div>
</div>
<footer>
<p>I'm the footer</p>
</footer>
Well it's not the same at all, because it's a big project, but basically is that.
Full answer
check the max-height toggles
<!DOCTYPE html>
<html lang="es">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Display None</title>
<link rel="stylesheet" href="estilos.css">
<style>
h2 {
text-align: center;
font-size: 40px;
}
.container {
margin-top: 50px;
position: relative;
height: auto;
padding-bottom: 50px;
}
.one, .two {
display: flex;
justify-content: space-around;
align-items: center;
flex-wrap: wrap;
height: auto;
overflow: hidden;
}
.chart {
width: 30%;
height: 200px;
margin: 15px;
background: #2096CE;
}
.curse {
width: 30%;
height: 200px;
margin: 15px;
background: #23AD5A;
}
footer {
height: 200px;
background: black;
color: white;
display: flex;
justify-content: center;
text-align: center;
}
p {
text-align: center;
font-size: 35px;
margin: auto 0;
}
</style>
</head>
<body>
<header>
<h2>Problem with divs</h2>
</header>
<button id="bt1">Show all</button>
<button id="bt2">Show curses</button>
<div class="container">
<div class="one">
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
<div class="chart"></div>
</div>
<div class="two">
<div class="curse"></div>
<div class="curse"></div>
<div class="curse"></div>
<div class="curse"></div>
</div>
</div>
<footer>
<p>I'm the footer</p>
</footer>
<script type="text/javascript" src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
var cont_all = $('.one');
var bt1 = $('#bt1');
var cont_curses = $('.two');
var bt2 = $('#bt2');
bt2.click(function(){
cont_all.css('max-height', '0px');
cont_curses.css('max-height', '100%');
});
bt1.click(function(){
cont_curses.css('max-height', '0px');
cont_all.css('max-height', '100%');
});
</script>
</body>
</html>
I am slightly changed #alexkarpen answer. Instead of max-height you can also use fadeIn() and fadeOut() jquery function. it looks a little bit cool
var cont_all = $('.one');
var bt1 = $('#bt1');
var cont_curses = $('.two');
var bt2 = $('#bt2');
var cont_project = $('.three');
var bt3 = $('#bt3');
bt2.click(function(){
cont_all.fadeOut("slow");
cont_project.fadeOut();
cont_curses.fadeIn("slow");
});
bt3.click(function(){
cont_all.fadeOut();
cont_curses.fadeOut();
cont_project.fadeIn("slow");
});
bt1.click(function(){
cont_curses.fadeIn("slow");
cont_project.fadeIn("slow");
cont_all.fadeIn("slow");
});
.container {
margin-top: 30px;
position: relative;
height: auto;
padding-bottom: 50px;
}
.one, .two, .three {
display: flex;
justify-content: flex-start;
align-items: center;
flex-wrap: wrap;
height: auto;
overflow: hidden;
}
.card {
width: 25%;
height: 200px;
margin: 15px;
}
.chart {
background: #2096CE;
}
.curse {
background: #23AD5A;
}
.project {
background: pink;
}
footer {
height: 200px;
background: black;
color: white;
display: flex;
justify-content: center;
text-align: center;
}
p {
text-align: center;
font-size: 35px;
margin: auto 0;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<button id="bt1">Show All</button>
<button id="bt2">Show Curses</button>
<button id="bt3">Show Projects</button>
<div class="container">
<div class="one">
<div class="card chart"></div>
<div class="card chart"></div>
<div class="card chart"></div>
<div class="card chart"></div>
<div class="card chart"></div>
<div class="card chart"></div>
</div>
<div class="two">
<div class="card curse"></div>
<div class="card curse"></div>
<div class="card curse"></div>
</div>
<div class="three">
<div class="card project"></div>
<div class="card project"></div>
</div>
</div>
<footer>
<p>I'm the footer</p>
</footer>
Try this:
footer { height: 200px; background: black; color: white; display: flex; justify-content: center; text-align: center; position:fixed; bottom: 0px; }

CSS "position: sticky" on horizontal scroll

I'm trying to build a horizontal scroll with multiple content boxes that belong to one title. So I'd like the title to stay while the content scrolls past it, until the next section with a new title comes.
Here's what I was trying to do: https://jsfiddle.net/kjo4duts/23/
* {
box-sizing: border-box;
}
body {
margin: 0;
padding: 0;
}
.scroll {
display: flex;
flex-direction: row;
width: 100vw;
height: 100px;
background: yellow;
overflow: scroll;
}
.item {
flex-shrink: 0;
width: 200px;
height: 100%;
margin-right: 20px;
}
.scroll .item .title {
position: sticky;
left: 0;
top: 0;
width: 100%;
height: 40px;
}
.item .content {
width: 100%;
height: 60px;
border: 3px solid green;
}
<div class="scroll">
<div class="item">
<div class="title">
Title 1
</div>
<div class="content">
Content
</div>
</div>
<div class="item">
<div class="title">
</div>
<div class="content">
Content
</div>
</div>
<div class="item">
<div class="title">
Title 2
</div>
<div class="content">
Content
</div>
</div>
<div class="item">
<div class="title">
</div>
<div class="content">
Content
</div>
</div>
<div class="item">
<div class="title">
</div>
<div class="content">
Content
</div>
</div>
</div>
Is there a way to address the "position: sticky" property to the outer parent (.scroll)? Or is there a smooth way to do it in JavaScript?
I tried to change the HTML structure, but with Flexbox you need a container for each box to get a horizontal layout..
Thanks in advance!
Edit: For anyone with the same problem. The solution is to add a relative position to the outer parent and the change the HTML structure a bit.
See updated Fiddle: https://jsfiddle.net/r2czqwn7/20/
Parent (.scroll) has to be position: relative at first as you can check below but I would consider different structure (all contents with same title could be in same div) to stick it over multiple items.
* {
box-sizing: border-box;
}
body {
margin: 0;
padding: 0;
}
.scroll {
position: relative;
display: flex;
flex-direction: row;
width: 100vw;
height: 100px;
background: yellow;
overflow: scroll;
}
.item {
flex-flow: column;
flex-shrink: 0;
width: 200px;
height: 100%;
margin-right: 20px;
}
.scroll .item .title {
position: sticky;
display: inline;
left: 0;
top: 0;
width: 100%;
height: 40px;
}
.item .content {
width: 100%;
height: 60px;
border: 3px solid green;
}
.item .content:first-child {
margin-top: 1rem;
}
<div class="scroll">
<div class="item">
<div class="title">
Title 1
</div>
<div class="content">
Content
</div>
</div>
<div class="item">
<div class="content">
Content
</div>
</div>
<div class="item">
<div class="title">
Title 2
</div>
<div class="content">
Content
</div>
</div>
<div class="item">
<div class="content">
Content
</div>
</div>
<div class="item">
<div class="content">
Content
</div>
</div>
</div>

Scrollable part of page

I want to have a similar effect like on this page: https://melaniedaveid.com/ (half of the page is scrollable).
I can make a sticky box, but there are certain things that I don't know how to make, such as the text. The text must be bigger than the box, but if overflow: hidden, then it is not scrollable. If it's overflow: scroll, it scrolls only if the mouse is hovering over the section, but I want the mouse to be able to scroll anywhere on the page.
body {
display: flex;
}
.example {
width: 50%;
}
.block {
background: #888888;
height: 300px;
/* margin: 1em; */
border: 1px solid black;
}
.block.one {
height: 100px;
}
.box {
width: 100%;
height: 100px;
background: orange;
display: flex;
justify-content: center;
align-items: center;
font-size: 2em;
}
.sticky {
position: sticky;
top: 10px;
}
.orange{
background: orange;
}
<div class="example">
<div class="block one"></div>
<div class="block">
<p class="box sticky"> </p>
</div>
<div class="block"></div>
</div>
<div class="example">
<div class="block one"></div>
<div class="block orange"></div>
<div class="block"></div>
</div>
Is this how you want it?
To create the sticky effect use position: sticky.
Code:
#wrapper {
display:flex;
flex-direction:row;
}
#sticky {
position: sticky;
position: -webkit-sticky;
background: #f83d23;
width: 50%;
height: 300px;
top: 0;
display: flex;
justify-content: center;
align-items: center;
box-shadow: 0 0 6px #000;
color: #fff;
}
#para{
width:50%;
margin:10px;
}
<div id="wrapper">
<div id="sticky">
sticky
</div>
<div id="para">
This is a para
</div>
</div>

Fader Differ from Div

so I found this cool JQuery fader which does exactly what I wanted. The background fades, but when the transistion from image to image occurs all my other divs hide and then show basically.
I want to make it so only the background image will fade and the divs won't essentially flicker. I can produce a short video if need be.
HTML and JQuery:
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
function fader() {
$("img").first().appendTo('#wrap').fadeOut(3000);
$("img").first().fadeIn(3000);
setTimeout(fader, 4200);
}
</script>
</head>
<body onLoad="fader();">
<div id="wrap">
<img src="images/Blue.png">
<img src="images/Green.png">
<img src="images/Orange.png">
<img src="images/Pink.png">
<img src="images/Purple.png">
<img src="images/Red.png">
<img src="images/Yellow.png">
<div id="wrapper">
<div id="header">
<div id="sv_title">Title</div>
<div id="sv_subtitle">Subtitle</div>
</div>
<div id="content_left">
<div id="text">
Lorem ipsum
</div>
</div>
<div id="content_right">
<div id="text">
Lorem ipsum
</div>
</div>
<div id="footer">
</div>
</div>
</div>
</body>
CSS:
html { overflow-x: hidden; overflow-y: hidden; }
img{
position:absolute;
top:0;
display:none;
width:1920px;
height:1080px;
border: none;
}
body{
margin: 0;
padding: 0;
}
#wrap {
margin: 0;
padding: 0;
}
/* End Setup */
/* Detail */
#wrapper {
height: 700px;
width: 900px;
opacity: 1.0;
bottom: 0;
left: 0;
margin: auto;
position: absolute;
top: 0;
right: 0;
}
#header {
height: 100px;
width: 900px;
background-color: #000000;
opacity: 0.7;
}
#content_left {
height: 500px;
width: 445px;
background-color: #000000;
opacity: 0.7;
display: inline;
float: right;
margin-top: 10px;
}
#content_right {
height: 500px;
width: 445px;
background-color: #000000;
opacity: 0.7;
display: inline;
float: left;
margin-top: 10px;
}
#footer {
height: 50px;
width: 900px;
background-color: #000000;
opacity: 0.7;
position: absolute;
bottom: 0;
margin-bottom: 30px;
}
this should do the job:
function fader() {
$("#background img:first").appendTo('#background').fadeOut(3000);
$("#background img:first").fadeIn(3000);
setTimeout(fader, 4200);
}
and the fix in the html
<div id="wrap">
<span id="background">
<img src="images/Blue.png">
<img src="images/Green.png">
<img src="images/Orange.png">
<img src="images/Pink.png">
<img src="images/Purple.png">
<img src="images/Red.png">
<img src="images/Yellow.png">
</span>
<div id="wrapper">
<!-- and the rest of the markup -->
it's not tested, I'm to lazy at the moment to create a fiddle and mock your images.

Show <li> dynamically using jQuery hover

I am trying to create a dynamic <ul> such that when I hover of a <li> (the class details), it dynamically creates another <li> (homework for that class) underneath it. I have this working.
However, when I leave the <li> I want the list of homework items to disappear. To accomplish this I decided to remove the <li> of homework items when I leave that <li>. The problem is that if I never hover into that homework list and simply just hover in and out of the class item details, it will not disappear. I am new to jQuery and so I may be missing something simple.
Before any hover
Hover into first class item
When I move the mouse out of the item, I want the items to disappear
But I want to maintain the functionality that when I hover into the homework list, it doesn't disappear:
And when I hover out of the homework list, it disappears (currently does this)
Here is my code:
jQuery.js
$(document).ready(function() {
$(".item").hover(
function(){
$(this).find('.class-item').find('.top').css("background", "#D0D0D0");
$(this).find('.class-item ').find('.bottom').css("background", "#B8B8B8");
$(this).css("border-color", "white");
$(this).css("margin-bottom", "0");
$('#classes li:eq(' + $( "li" ).index(this) + ')').after('<li class="hw"><ul><li class="hw-item">Homework 1</li><li class="hw-item">Homework 2</li></ul></li>');
var parent = $(this);
$(".hw").hover(
function(){
},
function(){
parent.css("margin-bottom", "2%");
$('#classes li:eq(' + ($( "li" ).index(parent) + 1) + ')').remove();
}
);
},
function(){
$(this).find(' .class-item ').find(' .top ').css("background", "#B8B8B8");
$(this).find(' .class-item ').find(' .bottom ').css("background", "#D0D0D0");
$(this).css("border-color", "#888888");
}
);
});
style.css
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: "Courier New", monospace;
font-size: 24px;
}
body {
}
#left {
float: left;
height: 100%;
width: 60%;
background: black;
}
#right {
float: left;
height: 100%;
width: 40%;
padding: 1%;
background: black;
}
#classes {
height: 100%;
overflow-y: scroll
}
#classes::-webkit-scrollbar {
display: none;
}
img {
width: 100%;
height: 100%;
max-height: 100%;
max-width: 100%;
}
.item {
height: 150px;
margin-bottom: 2%;
border: 5px solid #888888;
}
.class-item {
height: 100%;
width: 100%;
display: inline-block;
}
.top {
width: 100%;
height: 50%;
text-align: center;
background: #B8B8B8;
overflow: hidden;
white-space: nowrap;
text-overflow: ellipsis;
}
.bottom {
width: 100%;
height: 50%;
text-align: center;
background: #D0D0D0;
overflow: hidden;
white-space: nowrap;
text-overflow: ellipsis;
}
.hw {
margin-bottom: 2%;
padding: 1%;
width: 100%;
display: inline-block;
}
.hw-item{
margin-bottom: 1%;
padding: 0.25%;
background: #D0D0D0;
border: 3px solid white;
}
h3 {
text-align: center;
}
index.html
<html>
<head>
<title>Homework</title>
<link rel="stylesheet" href="style.css">
<script src="http://code.jquery.com/jquery-2.1.4.min.js"></script>
<script type="text/javascript" src="./jquery.js"></script>
</head>
<body>
<div id="left">
<img src="me.jpg"/>
</div>
<div id="right">
<ul id="classes">
<li class = "item">
<div class="class-item">
<div class="top">
<h3>Algorithm Analysis</h3>
</div>
<div class="bottom">
COMPSCI 704
</div>
</div>
</li>
<li class = "item">
<div class="class-item">
<div class="top">
<h3>Programming Language Concepts</h3>
</div>
<div class="bottom">
COMPSCI 431
</div>
</div>
</li>
<li class = "item">
<div class="class-item">
<div class="top">
<h3>Physics 1 with Calculus</h3>
</div>
<div class="bottom">
PHYSICS 209
</div>
</div>
</li>
<li class = "item">
<div class="class-item">
<div class="top">
<h3>Computer Ethics</h3>
</div>
<div class="bottom">
COMPSCI 395
</div>
</div>
</li>
<li class = "item">
<div class="class-item">
<div class="top">
<h3>Computer Architecture</h3>
</div>
<div class="bottom">
COMPSCI 458
</div>
</div>
</li>
</ul>
</div>
</body>
</html>
Thanks to the comments on my post, I was able to avoid the javascript and do it solely through css using:
.class-item {
height: 150px;
width: 100%;
display: inline-block;
border: 5px solid #888888;
}
.homework {
padding: 1%;
display: none;
}
.class-item:hover + .homework {
display: block;
}
.homework:hover {
display: block;
}

Categories

Resources