Expand List Upward Over Other Content - javascript

We're currently using a JS plugin called Nice Select which converts select inputs into expandable ul elements. I have the ul element at the bottom of an expandable hamburger menu. The number of li items at the bottom of the menu are causing the menu to overflow and have y-scroll. To prevent this, I would like the li items to expand upward on top of the other content in the menu. I've played around with relatively positioning the elements above the ul container but haven't had much success. I've posted here a quick example of the situation. Thanks for your help!
$(function() {
$('.list').toggle();
$(".current").click(function() {
$('.list').toggle();
});
$(".option").click(function() {
$('.current').text($(this).text());
});
})
.container {
width: 100%;
height: auto;
position: absolute;
border: 3px solid black;
}
.content {
background-color: red;
height: 200px;
width: 100%;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
<div class="content">
</div>
<div class="menu
"><span class="current" style="">United States</span>
<ul class="list">
<li class="option">United Arab Emirates</li>
<li class="option">United States</li>
</ul>
</div>
</div>


I've edited your example to provide a basic working version. I'm not entirely sure what you meant, so feel free to suggest some changes.
$(function() {
$('.list').toggle();
$(".current").click(function() {
$('.list').toggle();
});
$(".option").click(function() {
$('.current').text($(this).text());
});
})
.container {
width: 100%;
height: auto;
position: absolute;
}
.content {
background-color: red;
height: 200px;
width: 100%;
}
.menu {
//
}
.menu ul {
position: relative;
}
.menu ul li {
position: relative;
top: -100px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
<div class="content">
</div>
<div class="menu">
<span class="current" style="">United States</span>
<ul class="list">
<li class="option">United Arab Emirates</li>
<li class="option">United States</li>
</ul>
</div>
</div>


$(function() {
$('.list').toggle();
$(".current").click(function() {
$('.list').toggle();
});
$(".option").click(function() {
$('.current').text($(this).text());
});
})
.container {
width: 100%;
height: auto;
position: absolute;
border: 3px solid black;
}
.content {
background-color: red;
height: 150px;
width: 100%;
}
.menu{
position:relative;
}
.list{
position:absolute;
bottom:20px;
left:0;
width:100%;
margin:0;
padding:0;
border:1px solid black;
box-sizing:border-box;
}
.list li{
background-color:white;
width:100%;
display:block;
border:1px solid black;
box-sizing:border-box;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="container">
<div class="content">
</div>
<div class="menu
"><span class="current" style="">United States</span>
<ul class="list">
<li class="option">United Arab Emirates</li>
<li class="option">United States</li>
</ul>
</div>
</div>

Related

Dropdown menu - slideToggle challenge

Following is my code
$(document).ready(function(){
$('.submenu').hide();
$('.menu').click(function(event){
event.preventDefault();
$(this).children('.submenu').slideToggle(1000);
event.stopPropagation();
});
});
li, body, a{
list-style:none;
padding:0;
margin:0;
color:white;
text-decoration:none;
}
ul{
display:flex;
margin:0;
margin:0;
background:red;
}
.menu{
background:black;
color:white;
border-right:2px solid white;
height:5rem;
width:5rem;
display:flex;
align-items:center;
justify-content:center;
position:relative;
}
.submenu{
height:300px;
width:300px;
background:purple;
position:absolute;
top:5rem;
left:0;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul>
<li class='menu'>
<a href=''>Page 1</a>
<div class='submenu'>
<div class='page_title'></div>
<div class='page_description'></div>
</div>
</li>
<li class='menu'>
<a href=''>Page 2</a>
<div class='submenu'>
<div class='page_title'></div>
<div class='page_description'></div>
</div>
</li>
</ul>
I am trying to achieve two things in this.
When I click on the second link, the first submenu should slide Up and second open should slide down.
Here, when I click inside the first submenu after the slide down, it closes up. I want do not want it to close down, but only closes when I click on the same link tag or the next link
Alternatively, it will be great, if it can slide up when I click outside of the submenu on the body.
Any assistance is highly appreciated
Thanks

$(function() {
(function initSlideToggle() {
var $menus = $('.menu');
$menus.find('.submenu')
.on('click', function(e) {
e.stopPropagation()
})
.hide()
.end()
.on('click', function(e) {
var $this = $(e.currentTarget),
$openedSubMenus = $menus.find('.submenu:visible').not($this),
openThisSubMenu = function() {
$this.children('.submenu').stop(true, true).slideToggle(1000);
};
e.preventDefault();
e.stopPropagation();
if (!$openedSubMenus.length) {
openThisSubMenu();
}
$openedSubMenus.stop(true, true).slideToggle(1000, function() {
openThisSubMenu();
});
});
})();
});
li,
body,
a {
list-style: none;
padding: 0;
margin: 0;
color: white;
text-decoration: none;
}
ul {
display: flex;
margin: 0;
margin: 0;
background: red;
}
.menu {
background: black;
color: white;
border-right: 2px solid white;
height: 5rem;
width: 5rem;
display: flex;
align-items: center;
justify-content: center;
position: relative;
}
.submenu {
height: 300px;
width: 300px;
background: purple;
position: absolute;
top: 5rem;
left: 0;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul>
<li class='menu'>
<a href=''>Page 1</a>
<div class='submenu'>
<div class='page_title'></div>
<div class='page_description'></div>
</div>
</li>
<li class='menu'>
<a href=''>Page 2</a>
<div class='submenu'>
<div class='page_title'></div>
<div class='page_description'></div>
</div>
</li>
</ul>

Collapsable sidebar / navigation menu

I'm coding a website, i have a navigation bar on top of it, and a sidebar on the left. I want to turn this Fiddle into this one. It can use CSS, JQuery, JavaScript and Bootstrap, when you click the icon, the sidebar drags out to the right. And when you click it again, it collapse to the left.
<ul id="navbar">
<li class="title" id="sidebar_switch"><i class="fa fa-bars" aria- hidden="true"></i></li>
<li class="title"><img alt="Logo" src="http://www.iconsdb.com/icons/preview/orange/stackoverflow-6-xxl.png" height="16px" width="16px"></li>
<li class="title">Title</li>
</ul>

please have a look at the following solution based on your code using CSS3 translate:
HTML:
<div class="sidebar">
<p>
This sidebar goes all screen down, and if you scroll the webpage, the sidebar stays at the same place everytime, the scro
</p>
</div>
<div class="content">
<ul id="navbar">
<li class="title" id="sidebar_switch"><i class="fa fa-bars" aria-hidden="true"></i></li>
<li class="title"><img alt="Logo" src="http://www.iconsdb.com/icons/preview/orange/stackoverflow-6-xxl.png" height="16px" width="16px"></li>
<li class="title">Title</li>
</ul>
<div class="main">
aaaaaaaaaa
</div>
</div>
CSS:
body {
height: 100%;
width: 100%;
margin: 0px;
font-family: sans-serif;
overflow: hidden;
}
a {
text-decoration: none;
}
.title {
float: left;
display: block;
padding: 14px 16px;
}
#navbar {
font-weight: bold;
text-align: center;
float: left;
background-color: #333;
color: white;
list-style-type: none;
overflow: hidden;
margin: 0;
padding: 0;
width: 100%;
}
.sidebar{
position:fixed;
top:0px;
left:0px;
width:100%;
color:red;
}
.slide{
-webkit-transform: translate3d(25%,0,0);
}
.content{
width:100%;
height: 30em;
position:absolute;
left:0px;
top:0px;
background: white;
-webkit-transition:all .2s linear;
}
.content .slide{
-webkit-transform: translate3d(25%,0,0);
}
i{
cursor: pointer;
}
JS:
$('i').click(function(){
$('.content').toggleClass('slide');
});
JS Fiddle Demo

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;
}

Adding multiple pages with a single HTML document

I am attempting to implement a multi-page site with a single HTML document.
I want to display 'home', 'about', 'projects', and 'contact' when a user clicks on a certain link in my sidebar.
I have the following code written:
index.html
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="css/main.css">
<script type="text/javascript" src="js/jquery.min.js"></script>
<script>
function diff(A, B) {
return A.filter(function (a) {
return B.indexOf(a) == -1;
});
}
function show(shown) {
var all = ['home', 'about', 'projects', 'contact'];
var hide_these = diff(all, shown);
var hidden;
document.getElementById(shown).style.display='block';
for(hidden in hide_these)
document.getElementById(hidden).style.display='none';
return false;
}
</script>
</head>
<body>
<div id="home">
<div class="header">
<div class="menu-btn"></div>
<h1>
Hello, World!
</h1>
</div>
<div class="sidebar">
<li>Home</li>
<li>About</li>
<li>Projects</li>
<li>Contact</li>
</div>
<div class="content">
<p><br><br><br><br>Home</p>
</div>
<div class="footer">
</div>
</div>
<div id="about" style="display:none">
<div class="header">
<div class="menu-btn"></div>
<h1>
Hello, World!
</h1>
</div>
<div class="sidebar">
<li>Home</li>
<li>About</li>
<li>Projects</li>
<li>Contact</li>
</div>
<div class="content">
<p><br><br><br><br>About</p>
</div>
<div class="footer">
</div>
</div>
<div id="projects" style="display:none">
<div class="header">
<div class="menu-btn"></div>
<h1>
Hello, World!
</h1>
</div>
<div class="sidebar">
<li>Home</li>
<li>About</li>
<li>Projects</li>
<li>Contact</li>
</div>
<div class="content">
<p><br><br><br><br>Projects</p>
</div>
<div class="footer">
</div>
</div>
<div id="contact" style="display:none">
<div class="header">
<div class="menu-btn"></div>
<h1>
Hello, World!
</h1>
</div>
<div class="sidebar">
<li>Home</li>
<li>About</li>
<li>Projects</li>
<li>Contact</li>
</div>
<div class="content">
<p><br><br><br><br>Contact</p>
</div>
<div class="footer">
</div>
</div>
</body>
</html>
css/main.css
html,body {
padding: 0;
margin: 0;
font-family: arial;
}
html, body, #home{
width: 100%;
height:100%;
}
a {
color: black;
}
a:visited {
text-decoration: none;
color: black;
}
#home{
min-height:100%;
position:relative;
}
body .sidebar {
display:block;
}
body.loaded .sidebar {
display:none;
}
.header {
background-color: black;
height: 80px;
width: 100%;
font-family: cursive;
text-align: center;
line-height: 2;
color: white;
display:flex; align-items: center;
z-index: 1;
position:relative;
}
.menu-btn {
background-image: url("../images/menu.png");
height: 48px;
width: 44px;
margin-left:50px;
}
.header h1 {
opacity: 0;
width:100%;
margin:0;
padding:0;
}
.sidebar {
position: absolute;
width: 200px;
top: 80px;
bottom: 0;
padding-top: 10px;
-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=50)"; /* IE 8 */
filter: alpha(opacity=50); /* IE 5-7 */
-moz-opacity: 0.5; /* Netscape */
-khtml-opacity: 0.5; /* Safari 1.x */
opacity: 0.5; /* Good browsers */
}
.sidebar li {
color: black;
list-style-type: none;
margin-top: 10px;
width: 100%;
}
.sidebar li a {
text-decoration: none;
margin-left: 30px;
background-color: #9da1a4;
width: 100px;
padding: 8px;
border: 1px solid silver;
border-radius: 5px;
display: block;
}
.sidebar li a:hover {
background-color: #ebebeb;
}
.content {
margin-top: -80px; /* Header height */
background-image:url("../images/arbor.jpeg");
background-size: cover;
min-height: 100%;
min-width: 100%;
}
.content h1 {
color: black;
}
.footer {
width:100%;
height:30px;
text-align: center;
color: white;
background-color: black;
padding-top: 10px;
bottom:0;
left:0;
position:absolute;
}
.footer a img {
position: relative;
top: -5px;
}
but when I click on an option, it gives an expected problem: the 'page' that should be hidden isn't being hidden and only part of the requested page is being shown.
The jsfiddle found here shows my problem.
Why isn't this working? The javascript in the head is meant to find the difference between all the pages and the page requested, show the requested page and hide the rest.
Thanks in advance,
erip

See the fiddle
Replace
for (hidden in hide_these) {
document.getElementById(hidden).style.display = 'none';
}
with
for (hidden in hide_these) {
document.getElementById(hide_these[hidden]).style.display = 'none';
}
The problem with your code was that document.getElementById() was returning null because the values for the variable hidden was actually 0,1,2 etc.
you actually had to get the ids from the array hide_these
UPDATE
Add this in your CSS
The messing up of the background image is because you are missing the below given css. add them to solve the issue..
#about, #projects, #contact {
width: 100%;
height:100%;
}

Click button expands the div horizontally by closing other two divs

Guys I am new to jQuery...please help me to learn this. I want to expand the div(#center) taking width:100% on click that in turn closes the other 2 divs (#left and #right) in my case.
Please someone help me to solve this. And the most imp thing is that the transition should be swift nd not at once. Reply is appreciated. And its not lyk i dint try it first. I tried using click function to make it happen..bt dint work as desired
body {
width: 100%;
height: auto;
}
#taskDetails {
width: 900px;
height: 200px;
border: 2px solid #a1a1a1;
background: #dddddd;
}
#description {
width: 900px;
height: 200px;
border: 2px solid #a1a1a1;
background: #dddddd;
}
#details {
float: left;
width: 900px;
margin: 0 auto;
height: auto;
border: 2px solid #a1a1a1;
display: inline-block;
}
#left {
float: left;
width: 250px;
margin: 0 auto;
height: 200px;
border: 2px solid #a1a1a1;
background: #dddddd;
}
#center {
width: 370px;
float: left;
height: 200px;
border: 2px solid #a1a1a1;
background: #dddddd;
margin-left: 9px;
}
#right {
float: right;
width: 250px;
height: 200px;
border: 2px solid #a1a1a1;
background: #dddddd;
}
#head {
top: 0;
width: 100%;
height: 30px;
background: #8CBF26;
border-radius: 2px;
}
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
}
li {
float: left;
}
a {
padding: 0 10px;
border-radius: 8px;
display: block;
width: 60px;
height: 25px;
border: 2px solid #a1a1a1;
background-color: #00ABA9;
text-decoration: none;
}
.heading {
padding: 5px;
}
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css" href="abc.css">
<script href="abc.js"></script>
</head>
<body>
<div id="main">
<div id="taskDetails">
<div id="head">
<div class="heading">FORM</div>
</div>
<div id="formTab">
<div id="form">
</div>
</div>
</div>
<div id="description">
<div id="head">
<ul>
<li>Tab 1</li>
<li>Tab 2</li>
<li>Tab 3</li>
</ul>
</div>
<div id="content">
<div class="rte">
</div>
<div class="text">
</div>
</div>
</div>
<div id="details">
<div id="left">
<div id="head">
<div class="heading">Projects</div>
</div>
<div class="data">
</div>
</div>
<div id="center">
<div id="head">
<div class="heading">Details</div>
</div>
<div class="data">
</div>
</div>
<div id="right">
<div id="head">
<div class="heading">Tab 3</div>
</div>
<div class="data">
</div>
</div>
</div>
</div>
</body>

You can use this example for "tab2"
$("#tab2").click(function () {
$("#center").css("width", "100%");
$("#left").fadeOut("slow");
$("#right").fadeOut("slow");
});
check my fiddle: http://jsfiddle.net/u87z1m3n/1/
And put id's to the li's in order to be able to select them:
<li id="tab1">Tab 1
</li>
<li id="tab2">Tab 2
</li>
<li id="tab3">Tab 3
</li>
The example is very coarse as the code needs a lot more refining...
But I think that it gives an answer to your question...

Study the example below. Let me know if you have any questions.
$("#head li").click(function () {
$("#center, #left, #right").eq($(this).index()).css("width", "100%");
$("#center, #left, #right").not($(this)).hide();
});
body {
width: 100%;
height: auto;
}
.current {
width: 100%
}
#taskDetails {
width: 900px;
height: 200px;
border: 2px solid #a1a1a1;
background: #dddddd;
}
#description {
width: 900px;
height: 200px;
border: 2px solid #a1a1a1;
background: #dddddd;
}
#details {
float: left;
width: 900px;
margin: 0 auto;
height: auto;
border: 2px solid #a1a1a1;
display: inline-block;
}
#left {
float: left;
width: 250px;
margin: 0 auto;
height: 200px;
border: 2px solid #a1a1a1;
background: #dddddd;
}
#center {
width: 370px;
float: left;
height: 200px;
border: 2px solid #a1a1a1;
background: red;
margin-left: 9px;
}
#right {
float: right;
width: 250px;
height: 200px;
border: 2px solid #a1a1a1;
background: #dddddd;
}
#head {
top: 0;
width: 100%;
height: 30px;
background: #8CBF26;
border-radius: 2px;
}
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
}
li {
float: left;
}
a {
padding: 0 10px;
border-radius: 8px;
display: block;
width: 60px;
height: 25px;
border: 2px solid #a1a1a1;
background-color: #00ABA9;
text-decoration: none;
}
.heading {
padding: 5px;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="main">
<div id="taskDetails">
<div id="head">
<div class="heading">FORM</div>
</div>
<div id="formTab">
<div id="form">
</div>
</div>
</div>
<div id="description">
<div id="head">
<ul>
<li>Tab 1</li>
<li>Tab 2</li>
<li>Tab 3</li>
</ul>
</div>
<div id="content">
<div class="rte">
</div>
<div class="text">
</div>
</div>
</div>
<div id="details">
<div id="left">
<div id="head">
<div class="heading">Projects</div>
</div>
<div class="data">
</div>
</div>
<div id="center">
<div id="head">
<div class="heading">Details</div>
</div>
<div class="data">
</div>
</div>
<div id="right">
<div id="head">
<div class="heading">Tab 3</div>
</div>
<div class="data">
</div>
</div>
</div>
</div>

Here's a CodePen demo showing the final result of everything below. Please read it carefully so you can learn the process and understand everything that's happening.
First of all, your HTML needed a lot of cleanup. You called head as an ID, but used it multiple times throughout your code. If you're going to use a selector more than once, it should be a class instead. I changed it in the HTML and the CSS.
HTML
<div id="main">
<div id="taskDetails">
<div class="head">
<div class="heading">FORM</div>
</div>
<div id="formTab">
<div id="form"></div>
</div>
</div>
<div id="description">
<div class="head">
<ul>
<li>Tab 1</li>
<li>Tab 2</li>
<li>Tab 3</li>
</ul>
</div>
<div id="content">
<div class="rte"></div>
<div class="text"></div>
</div>
</div>
<div id="details">
<div id="left">
<div class="head">
<div class="heading">Projects</div>
</div>
<div class="data"></div>
</div>
<div id="center">
<div class="head">
<div class="heading">Details</div>
</div>
<div class="data"></div>
</div>
<div id="right">
<div class="head">
<div class="heading">Tab 3</div>
</div>
<div class="data"></div>
</div>
</div>
</div>
Next, in your CSS, you hadn't set the widths of your containers correctly, so adding something like width:100% wasn't doing anything because there was no max width to fill. I added that to your styles. Remember, I also updated the markup from changing your head id to a class.
Additionally, I removed the floats from you left,right, and center divs because that removes the blocks from the flow of the document, which can lead to funny behavior. Instead, I changed them to display:inline-block and set their widths relative to the container.
Finally, I added a .wide class at the end which will set the width of the center div.
CSS
body {
margin:0;
padding:0;
width: 100%;
height: auto;
}
#main {
width:100%;
}
#taskDetails {
width:auto;
height: 200px;
border: 2px solid #a1a1a1;
background: #dddddd;
}
#description {
width:auto;
height: 200px;
border: 2px solid #a1a1a1;
background: #dddddd;
}
#details {
width:100%;
margin: 0 auto;
height: auto;
border: 2px solid #a1a1a1;
display: inline-block;
}
#left {
display:inline-block;
margin:0;
padding:0;
width:20%;
margin: 0 auto;
height: 200px;
border: 1px solid #a1a1a1;
background: #dddddd;
}
#center {
display:inline-block;
margin:0;
padding:0;
width:50%;
height: 200px;
border: 1px solid #a1a1a1;
background: red;
}
#right {
display:inline-block;
margin:0;
padding:0;
width:20%;
height: 200px;
border: 1px solid #a1a1a1;
background: #dddddd;
}
.head {
top: 0;
width: 100%;
height: 30px;
background: #8CBF26;
border-radius: 2px;
}
ul {
list-style-type: none;
margin: 0;
padding: 0;
overflow: hidden;
}
li {
float: left;
}
a {
padding: 0 10px;
border-radius: 8px;
display: block;
width: 60px;
height: 25px;
border: 2px solid #a1a1a1;
background-color: #00ABA9;
text-decoration: none;
}
.heading {
padding: 5px;
}
.wide {
width:100% !important;
transition:.5s;
}
Now, this can be done with jQuery, so make sure you add the script in the head of your HTML.
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
The jQuery script is pretty simple, and does three things:
1. When you click on any of the tab buttons, it will hide the #left and #right divs.
2. The #center div expands to 100% of the container.
3. When you click on the tab again, it will shrink the #center div and bring the other two back.
jQuery
$(".head ul li").click(function() {
$("#left, #right").animate({width:"toggle"});
$("#center").toggleClass('wide');
})
I used toggle in both of the calls because it gives a fairly nice animation without making you code in specifics. It also handles adding or removing a class, so your script can stay simple if all you want to do is add or remove that class with each click.
If you want something more complex, you'll definitely want to look at JavaScript instead of jQuery as #Katana314 mentioned above. They're for two different things, so make sure you understand the difference between the two.

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