Develop Reference

Javascript: How to change the images inside of a div on scroll?

so I am trying to create the effect seen on this website (for the photos on the left side of the column):
https://www.franshalsmuseum.nl/en/
I want to be able to change the image on scroll inside of a div.
And preferably, it won't scroll down past the page until all of the images have been scrolled through!
I'm trying to get the hang of javascript before adding things like jQuery, so can someone help with this using pureJS?`
window.onscroll = function() {
console.log(window.pageYOffset);
var img1 = document.getElementById('img1');
var img2 = document.getElemebtById('img2')
if ( window.pageYOffset > 1000 ) {
img1.classList.add("hidden");
img2.classList.remove("hidden");
} else {
img2.classList.add("hidden");
img1.classList.remove("hidden");
}
}
.rightPhotos {
max-width: 50%;
height: 50%;
overflow: auto;
}
.aPhoto {
max-height: 100%;
}
.hidden {
visibility: hidden;
}
.images {
width: 100%;
height: 100%;
}
<div class="other">
<div class="rightPhotos" onscroll="myFunction()">
<div class="aPhoto">
<img class ="images" id="img1" src="IMAGES/sunglasses.jpeg" alt="Woman with Sunglasses">
</div>
<div class="aPhoto hidden">
<img class="images" src="IMAGES/dancer1.jpg" alt="A Dancer">
</div>
</div>
</div>
`

The page you linked actually looks very nice, so I took a while to make something looking a bit closer to it than what other answers do.
I added a properly working transition, similar to one on franshalsmuseum.nl.
I styled the page to deal relatively well with being resized:
The sizing of panes and images is all ralative,
Scroll steps are relative to page height,
Images are shown using <div> with background-image instead of <img> tag. Depending on the size of the window, they are slightly cropped to adjust to changing aspect ratio of viewport.
I made the number of image sets very simple to change. It could be improved by creating the html elements in Javascript, but that doesn't look necessary. At least, it wouldn't be for the original page.
How it works
HTML
Images are put into special envelop elements (.img-wrapper), that provide proper sizing and positioning position: relative is important there). Each image element gets url (as background image url) and image set number to be used by javascript:
<div class="img visible" data-imageset="1"
style="background-image: url('http://placeimg.com/640/480/people');">
</div>
Class visible is set to show imageset 1 at the beginning.
CSS
The key points are these definitions (and similar for #bottom-image). As the element enveloping the image has overflow: hidden, we can hide the image by moving it outside of visible area. When we set coordinates back to normal, the image will slide back, using the smooth transition.
/* hiding images in #top-image */
#left-pane #top-image .img {
top: 100%;
}
#left-pane #top-image .img.visible {
top: 0;
}
JS
The Javascript code is very minimal, the interaction with DOM is really one line. However, it uses some tricks that may not be obvious, so there is this line with some links to documentation:
document.querySelectorAll('#left-pane .img').forEach((img) => {
    img.classList.toggle('visible', img.dataset.imageset <= currentSet);
}
It just finds all images and adds or removes class visible depending on the data-imageset attribute of the image.
Full snippet with demo
See snippet below. Demo looks much better if you use "Full page" link after running the snippet.
let currentSet = 1;
function updateSelectedImgSet() {
const currentScroll = document.scrollingElement.scrollTop;
const scrollMax = document.scrollingElement.scrollHeight - document.scrollingElement.clientHeight;
const setsCount = 3;
const scrollPerSet = scrollMax / setsCount;
const scrolledSet = Math.floor(currentScroll / scrollPerSet) + 1;
if (scrolledSet == currentSet) {
return;
}
currentSet = scrolledSet;
document.querySelectorAll('#left-pane .img').forEach((img) => {
img.classList.toggle('visible', img.dataset.imageset <= currentSet);
});
}
window.onscroll = updateSelectedImgSet;
window.onresize = updateSelectedImgSet;
/* Left pane, fixed */
#left-pane {
position: fixed;
height: 100%;
width: 40vw;
}
#left-pane .img-wrapper {
position: relative;
height: 50%;
width: 100%;
overflow: hidden;
}
#left-pane .img-wrapper .img {
position: absolute;
width: 100%;
height: 100%;
/* Sizing and cropping of image */
background-position: center;
background-size: cover;
/* Transition - the slow sliding of images */
transition: 0.5s all ease-in-out;
}
/* hiding images in #top-image */
#left-pane #top-image .img {
top: 100%;
}
#left-pane #top-image .img.visible {
top: 0;
}
/* hiding images in #bottom-image */
#left-pane #bottom-image .img {
bottom: 100%;
}
#left-pane #bottom-image .img.visible {
bottom: 0;
}
/* Right pane, scrolling with the page */
#right-pane {
margin-left: 40vw;
}
.scrollable-content {
font-size: 40vw;
writing-mode: vertical-rl;
white-space: nowrap;
}
<div id="left-pane">
<div id="top-image" class="img-wrapper">
<div class="img visible" data-imageset="1"
style="background-image: url('http://placeimg.com/640/480/people');">
</div>
<div class="img" data-imageset="2"
style="background-image: url('http://placeimg.com/640/480/animals');">
</div>
<div class="img" data-imageset="3"
style="background-image: url('http://placeimg.com/640/480/any');">
</div>
</div>
<div id="bottom-image" class="img-wrapper">
<div class="img visible" data-imageset="1"
style="background-image: url('http://placeimg.com/640/480/nature');">
</div>
<div class="img" data-imageset="2"
style="background-image: url('http://placeimg.com/640/480/tech');">
</div>
<div class="img" data-imageset="3"
style="background-image: url('http://placeimg.com/640/480/arch');">
</div>
</div>
</div>
<div id="right-pane">
<div class="scrollable-content">Scrollable content!</div>
</div>

see code bellow:(I set 60 insteed 1000 (in function)for see changes)
I use one image and onscroll change the src of image
window.onscroll = function() {
var img1 = document.getElementById('img1');
var img2 = document.getElementById('img2')
if ( window.pageYOffset > 60 ) {
document.getElementById("img1").src = "https://material.angular.io/assets/img/examples/shiba2.jpg";
} else {
document.getElementById("img1").src = "https://material.angular.io/assets/img/examples/shiba1.jpg";
}
}
.rightPhotos
{
max-width: 50%;
height:50%;
overflow: auto;
}
.aPhoto
{
max-height: 100%;
}
.images
{
width: 100%;
height: 500px;
}
<div class="other">
<div class="rightPhotos" onscroll="myFunction()">
<div class="aPhoto">
<img class ="images" id="img1" src="https://material.angular.io/assets/img/examples/shiba1.jpg" alt="Woman with Sunglasses"/>
</div>
</div>
</div>

You can use the CSS properties to show/ hide the elements; instead of having custom CSS with hidden class.
if ( window.pageYOffset > 1000 ) {
img1.style.visibility = 'hidden';
img2.style.visibility = 'visible';
} else {
img2.style.visibility = 'hidden';
img1.style.visibility = 'visible';
}
The above would hide the element, but the DOM element would still occupy space.
For it now to have space occupied (like to remove it)
if ( window.pageYOffset > 1000 ) {
img1.style.display = 'none';
img2.style.display = 'block';
} else {
img1.style.display = 'block';
img2.style.display = 'none';
}

//window.pageYOffset
var scrollingDiv = document.getElementById('scrollContainer');
var img1 = document.getElementById('img1');
var img2 = document.getElementById('img2');
scrollingDiv.onscroll = function(event) {
if (scrollingDiv.scrollTop < 500) {
img1.src = "https://placeimg.com/250/100/arch";
img2.src = "https://placeimg.com/250/100/animals";
}
if (scrollingDiv.scrollTop > 500) {
img1.src = "https://placeimg.com/250/100/nature";
img2.src = "https://placeimg.com/250/100/people";
}
if (scrollingDiv.scrollTop > 1000) {
img1.src = "https://placeimg.com/250/100/tech";
img2.src = "https://placeimg.com/250/100/any";
}
}
.container{
display: table;
width: 100%;
height: 100%;
}
body{
margin: 0;
}
.container > div {
vertical-align:top;
}
.left, .middle, .right {
display: table-cell;
height: 100vh;
box-sizing: border-box;
}
.left, .right{
width:40%;
background: gray;
}
.middle{
overflow: auto;
position: relative;
}
.in-middle{
background: tomato;
position: absolute;
width: 100%;
height: 100%;
box-sizing: border-box;
margin: 0;
}
.in-in-middle{
height: 500px;
background: tomato;
}
.in-in-middle:nth-child(2){
background: pink;
}
.in-in-middle:nth-child(3){
background: skyblue;
}
.left img{
width: 100%;
transition: all 0.5s;
}
<div class="container">
<div class="left">
<img id="img1" src="https://placeimg.com/250/100/arch">
<img id="img2" src="https://placeimg.com/250/100/animals">
</div>
<div class="middle" id="scrollContainer">
<div class="in-middle">
<div class="in-in-middle" id="1"></div>
<div class="in-in-middle" id="2"></div>
<div class="in-in-middle" id="3"></div>
</div>
</div>
</div>

Remove child element if being "cut" by parent element with overflow hidden

I am making a page where there should be content on the left side and commercials in divs on the right side. The height of the left sides div is unknown. I want to add as many commercial divs as possible on the right side without making the height of the right side taller than the left side.
I have set the right sides div height equal to left sides height and then I have added overflow: hidden on the right sides div so that the commercial divs are being cut off. I don't want my commercial divs to be cut off so I would like to remove the one that is being cut off.
Here is my code https://jsfiddle.net/p9dmzoa3/

You can try below code, this will remove all those commercials DIV, which are getting cut-off :
$(document).ready(function() {
$(".right_side").css("height", $(".left_side").height());
$commercialDivs = $(".right_side").children("div.commercials");
$rightSideDivHeight = $(".right_side").height();
$tempHeight = 0;
for(var i=0;i<$commercialDivs.length;i++){
$tempHeight += $commercialDivs[i].clientHeight;
if($tempHeight>$rightSideDivHeight){
$commercialDivs[i].remove();
}
}
});

Something like this should do the thing.
$(document).ready(function() {
$(".right_side").css("height", $(".left_side").height());
var j = $(".right_side").children("div").length;
for (var i = 1; i < j; i++) {
if ((($('.right_side').offset().top + $(".right_side").height()) - ($('.right_side div:last-child').offset().top + $(".right_side div:last-child").height())) < 0) {
$(".right_side div:last-child").remove();
} else {
break;
}
}
});
div.left_side {
display: inline-block;
}
div.right_side {
display: inline-block;
float: right;
overflow: hidden;
}
div.left_side_content {
height: 30px;
margin-top: 10px;
background-color: green;
}
div.commercials {
height: 50px;
margin-top: 10px;
background-color: forestgreen;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="content" style ="width: 430px; background-color: lightblue; padding: 5px;">
<div class="left_side" style ="width: 200px; background-color: tomato; padding: 5px;">
<div class="left_side_content">content</div>
<div class="left_side_content">content</div>
</div>
<div class="right_side" style ="width: 200px; background-color: orange; padding: 5px;">
<div class="commercials">commercials</div>
<div class="commercials">commercials</div>
<div class="commercials">commercials</div>
<div class="commercials">commercials</div>
<div class="commercials">commercials</div>
<div class="commercials">commercials</div>
</div>
</div>

How do you create 3 adjustable divs?

What I want:
| A | | B | | C |
^ ^
When you move the handles left and right A, B, and C resize accordingly
| A | | B | | C |
What I have is the || between B and C sliding, but not resizing B and all I get on the other one is the resize cursor. Basically C is a curtain and covers A and B. I did get min size working for C.
| A | C |
I broke somebody else's perfectly good code to get this far:
var isResizing = false,
who='',
lastDownX = 0;
$(function () {
var container = $('#container'),
left = $('#left'),
right = $('#right'),
middle = $('#middle'),
hand2 = $('#hand2'),
handle = $('#handle');
handle.on('mousedown', function (e) {
isResizing = true;
who=e.target.id;
lastDownX = e.clientX;
});
$(document).on('mousemove', function (e) {
var temp, min;
// we don't want to do anything if we aren't resizing.
if (!isResizing)
return;
min=container.width() * 0.1;
temp = container.width() - (e.clientX - container.offset().left);
if (temp < min)
temp = min;
if (who == 'handle')
right.css('width', temp);
if (who == 'hand2')
left.css('width', temp);
}).on('mouseup', function (e) {
// stop resizing
isResizing = false;
});
});
body, html {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
#container {
width: 100%;
height: 100%;
/* Disable selection so it doesn't get annoying when dragging. */
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: moz-none;
-ms-user-select: none;
user-select: none;
}
#container #left {
width: 40%;
height: 100%;
float: left;
background: red;
}
#container #middle {
margin-left: 40%;
height: 100%;
background: green;
}
#container #right {
position: absolute;
right: 0;
top: 0;
bottom: 0;
width: 200px;
background: rgba(0, 0, 255, 0.90);
}
#container #handle {
position: absolute;
left: -4px;
top: 0;
bottom: 0;
width: 80px;
cursor: w-resize;
}
#container #hand2 {
position: absolute;
left: 39%;
top: 0;
bottom: 0;
width: 80px;
cursor: w-resize;
}
<div id="container">
<!-- Left side -->
<div id="left"> This is the left side's content!</div>
<!-- middle -->
<div id="middle">
<div id="hand2"></div> This is the middle content!
</div>
<!-- Right side -->
<div id="right">
<!-- Actual resize handle -->
<div id="handle"></div> This is the right side's content!
</div>
</div>
Been playing with it here: https://jsfiddle.net/ju9zb1he/5/

I was looking for a solution that required less extensive CSS. It does have one minor bug(FIXED), but hopefully this should get you started. Here is a DEMO.
Also I aimed to use DOM Traversal methods like .next() and .prev() that way it wouldn't be so attribute dependent, and would be easily reusable if you needed a feature like this multiple times on a page.
Edit - Further Explanation
The idea here is onClick of a .handle we want to gather the total width (var tWidth) of the .prev() and .next() divs relative to the .handle in the DOM. We can then use the start mouse position (var sPos) to substract the amount of pixels we've moved our mouse (e.pageX). Doing so gives us the correct width that the .prev() div should have on mousemove. To get the width of the .next() div we need only to subtract the width of the .prev() div from the total width (var tWidth) that we stored onClick of the .handle. Hope this helps! Let me know if you have any further questions, however I will likely be unavailable till tomorrow.
HTML
<div class="container">
<div id="left"></div>
<div id="l-handle" class="handle"></div>
<div id="middle"></div>
<div id="r-handle" class="handle"></div>
<div id="right"></div>
</div>
CSS
#left, #middle, #right {
display: inline-block;
background: #e5e5e5;
min-height: 200px;
margin: 0px;
}
#l-handle, #r-handle {
display: inline-block;
background: #000;
width: 2px;
min-height: 200px;
cursor: col-resize;
margin: 0px;
}
jQuery
var isDragging = false,
cWidth = $('.container').width(),
sPos,
handle,
tWidth;
$('#left, #middle, #right').width((cWidth / 3) - 7); // Set the initial width of content sections
$('.handle').on('mousedown', function(e){
isDragging = true;
sPos = e.pageX;
handle = $(this);
tWidth = handle.prev().width() + handle.next().width();
});
$(window).on('mouseup', function(e){
isDragging = false;
});
$('.container').on('mousemove', function(e){
if(isDragging){ // Added an additional condition here below
var cPos = sPos - e.pageX;
handle.prev().width((tWidth / 2) - cPos); // This was part of the bug...
handle.next().width(tWidth - handle.prev().width());
// Added an update to sPos here below
}
});
Edit
The bug was caused by 2 things.
1) On mousemove we were dividing the total width by two, instead of an updated mouse offset.
2) The sPos was not updating on mousemove, and stayed a static number based off of the click location.
Resolution
Update the sPos on mousemove that way the mouse offset is accurately based off of the previous mousemove position, rather than the click position. When this is done we can then subtract the .next() div's width from the total width. Then we subtract our current mouse position from the remaining width. The fiddle has been updated as well.
$('.container').on('mousemove', function(e){
var cPos = sPos - e.pageX;
if(isDragging && ((tWidth - handle.next().width()) - cPos) <= tWidth){
handle.prev().width((tWidth - handle.next().width()) - cPos);
handle.next().width(tWidth - handle.prev().width());
sPos = e.pageX;
}
});
Edit
Added an additional condition on mousemove to prevent the drag from exceeding the total width (var tWidth).

Can you please explain what you're trying to accomplish?
I don't believe you need to use position: absolute. The premise of absolute positioning is to override the margin and padding imposed on an element by its parent.
You don't need to do this, all elements have relative positioning by default which makes them push eachother around and don't allow overlapping.
I'm probably missing something, but I think this is what you want with nothing but some very basic CSS: http://jsfiddle.net/3bdoazpk/
<div class='first'>
asdf
</div><div class='second'>
dasdf
</div><div class='third'>
sadf
</div>
body {
margin: 0;
}
div {
display: inline-block;
height: 100%;
}
.first, .third {
width: 40%;
}
.first {
background-color: red;
}
.second {
background-color: blue;
width: 20%;
}
.third {
background-color: green;
}

jitter when using jquery to alter background-position

Here's the jsfiddle.
It's the interface to cropping an image. As you can see the selection div takes the same background image and positions it to the negative of the top and left attributes of the selection div. In theory this should give a perfect overlap, but there's a jitter as you move the selection div around, and I can't seem to figure out what is causing it.
html
<div id="main">
<div id="selection"></div>
</div>
css
#main {
width: 600px;
height: 450px;
position: relative;
background: url("http://cdn-2.historyguy.com/celebrity_history/Scarlett_Johansson.jpg");
background-size: contain;
}
#selection {
width: 100px;
height: 100px;
position: absolute;
background: url("http://cdn-2.historyguy.com/celebrity_history/Scarlett_Johansson.jpg");
border: 1px dotted white;
background-size: 600px 450px;
}
jquery
$(document).ready(function () {
var move = false;
var offset = [];
var selection = null;
$("#selection").mousedown(function (e) {
move = true;
selection = $(this);
offset = [e.pageX - selection.offset().left, e.pageY - selection.offset().top];
});
$("#selection").mousemove(function (e) {
if (move == true) {
selection.css("left", e.pageX - offset[0]);
selection.css("top", e.pageY - offset[1]);
selection.css("background-position", (((-selection.position().left) - 1) + "px " + ((-selection.position().top ) - 1) + "px"));
}
});
$("#selection").mouseup(function (e) {
move = false;
});
})

It would appear that there is a value of 5 offset that needs to be added to ensure seamlessness
DEMO http://jsfiddle.net/nzx0fcp5/2/
offset = [e.pageX - selection.offset().left + 5, e.pageY - selection.offset().top + 5];

So, while experimenting I discovered that this was only a problem at certain sizes of the image. At the original size it is no problem, neither at half nor a quarter of this size. It wasn't simply a matter of keeping the image in proportion not having the image square or using even pixel sizes. I'm assuming this had something to do with partial pixel sizes, but I'm not sure, and I couldn't see any way to work around this, at least none that seemed worth the effort.
So while checking out the code of other croppers I took a look at POF's image cropper, they seem to have got round the problem by not using the background-position property at all (I'm not sure if it's plugin or they coded it themselves). They just set the image down and then used a transparent selection div with 4 divs stuck to each edge for the shading. So there's no pixel crunching on the fly at all. I like the simplicity and lightweight nature of this design and knocked up a version myself in jsfiddle to see if I could get it to work well.
new jitter free jsfiddle with no pixel crunching
I liked the solution for the preview box as well.
html
<body>
<div id="main">
<img src="http://flavorwire.files.wordpress.com/2012/01/scarlett_johansson.jpg" />
<div id="upperShade" class="shade" > </div>
<div id="leftShade" class="shade" > </div>
<div id="selection"></div>
<div id="rightShade" class="shade"></div>
<div id="lowerShade" class="shade" ></div>
</div>
</body>
css
#main {
position:relative;
width: 450px;
height: 600px;
}
#selection {
width: 148px;
height: 148px;
position: absolute;
border: 1px dotted white;
top: 0px;
left: 0px;
z-index: 1;
}
.shade {
background-color: black;
opacity: 0.5;
position: absolute;
}
#upperShade {
top: 0px;
left: 0px;
width: 600px;
}
#leftShade {
left: 0px;
top: 0px;
height: 150px;
width: auto;
}
#rightShade {
left: 150px;
top: 0px;
height: 150px;
width: 450px;
}
#lowerShade {
left:0px;
top: 150px;
width: 600px;
height: 300px;
}
jquery
$(document).ready(function () {
var move = false;
var offset = [];
var selection = null;
$("#selection").mousedown(function (e) {
move = true;
selection = $(this);
offset = [e.pageX - selection.offset().left, e.pageY - selection.offset().top];
});
$("#selection").mousemove(function (e) {
if (move == true) {
selection.css("left", e.pageX - offset[0]);
selection.css("top", e.pageY - offset[1]);
setShade();
}
});
function setShade() {
$("#upperShade").css("height", selection.position().top);
$("#lowerShade").css("height", 600 - (selection.position().top + 150));
$("#lowerShade").css("top", selection.position().top + 150);
$("#leftShade").css("top", selection.position().top);
$("#leftShade").css("width", selection.position().left);
$("#rightShade").css("top", selection.position().top);
$("#rightShade").css("left", selection.position().left + 150);
$("#rightShade").css("width", 450 - selection.position().left);
}
$("#selection").mouseup(function (e) {
move = false;
});
});

How to toggle (hide / show) sidebar div using jQuery

I have 2 <div>s with ids A and B. div A has a fixed width, which is taken as a sidebar.
The layout looks like diagram below:
The styling is like below:
html, body {
margin: 0;
padding: 0;
border: 0;
}
#A, #B {
position: absolute;
}
#A {
top: 0px;
width: 200px;
bottom: 0px;
}
#B {
top: 0px;
left: 200px;
right: 0;
bottom: 0px;
}
I have <a id="toggle">toggle</a> which acts as a toggle button. On the toggle button click, the sidebar may hide to the left and div B should stretch to fill the empty space. On second click, the sidebar may reappear to the previous position and div B should shrink back to the previous width.
How can I get this done using jQuery?

$('button').toggle(
function() {
$('#B').css('left', '0')
}, function() {
$('#B').css('left', '200px')
})
Check working example at http://jsfiddle.net/hThGb/1/
You can also see any animated version at http://jsfiddle.net/hThGb/2/

See this fiddle for a preview and check the documentation for jquerys toggle and animate methods.
$('#toggle').toggle(function(){
$('#A').animate({width:0});
$('#B').animate({left:0});
},function(){
$('#A').animate({width:200});
$('#B').animate({left:200});
});
Basically you animate on the properties that sets the layout.
A more advanced version:
$('#toggle').toggle(function(){
$('#A').stop(true).animate({width:0});
$('#B').stop(true).animate({left:0});
},function(){
$('#A').stop(true).animate({width:200});
$('#B').stop(true).animate({left:200});
})
This stops the previous animation, clears animation queue and begins the new animation.

You can visit w3school for the solution on this the link is here and there is another example also available that might surely help,
Take a look

The following will work with new versions of jQuery.
$(window).on('load', function(){
var toggle = false;
$('button').click(function() {
toggle = !toggle;
if(toggle){
$('#B').animate({left: 0});
}
else{
$('#B').animate({left: 200});
}
});
});

Using Javascript
var side = document.querySelector("#side");
var main = document.querySelector("#main");
var togg = document.querySelector("#toogle");
var width = window.innerWidth;
window.document.addEventListener("click", function() {
if (side.clientWidth == 0) {
// alert(side.clientWidth);
side.style.width = "200px";
main.style.marginLeft = "200px";
main.style.width = (width - 200) + "px";
togg.innerHTML = "Min";
} else {
// alert(side.clientWidth);
side.style.width = "0";
main.style.marginLeft = "0";
main.style.width = width + "px";
togg.innerHTML = "Max";
}
}, false);
button {
width: 100px;
position: relative;
display: block;
}
div {
position: absolute;
left: 0;
border: 3px solid #73AD21;
display: inline-block;
transition: 0.5s;
}
#side {
left: 0;
width: 0px;
background-color: red;
}
#main {
width: 100%;
background-color: white;
}
<button id="toogle">Max</button>
<div id="side">Sidebar</div>
<div id="main">Main</div>

$('#toggle').click(function() {
$('#B').toggleClass('extended-panel');
$('#A').toggle(/** specify a time here for an animation */);
});
and in the CSS:
.extended-panel {
left: 0px !important;
}

$(document).ready(function () {
$(".trigger").click(function () {
$("#sidebar").toggle("fast");
$("#sidebar").toggleClass("active");
return false;
});
});
<div>
<a class="trigger" href="#">
<img id="icon-menu" alt='menu' height='50' src="Images/Push Pin.png" width='50' />
</a>
</div>
<div id="sidebar">
</div>
Instead #sidebar give the id of ur div.

This help to hide and show the sidebar, and the content take place of the empty space left by the sidebar.
<div id="A">Sidebar</div>
<div id="B"><button>toggle</button>
Content here: Bla, bla, bla
</div>
//Toggle Hide/Show sidebar slowy
$(document).ready(function(){
$('#B').click(function(e) {
e.preventDefault();
$('#A').toggle('slow');
$('#B').toggleClass('extended-panel');
});
});
html, body {
margin: 0;
padding: 0;
border: 0;
}
#A, #B {
position: absolute;
}
#A {
top: 0px;
width: 200px;
bottom: 0px;
background:orange;
}
#B {
top: 0px;
left: 200px;
right: 0;
bottom: 0px;
background:green;
}
/* makes the content take place of the SIDEBAR
which is empty when is hided */
.extended-panel {
left: 0px !important;
}