Develop Reference

How to zoom in/zoom out each image in each div with jquery and scale (css)?

I am trying to create a zoom in / zoom out function for images in an article for the website www.nhadatsonnghia.com. When everything worked fine, an error occurred that jquery only works for the first image in the first tag, and the images in each subsequent tag cannot zoom in / zoom out. After running only the first image has class style="transform: scale (1);".
You can see it working here
So how should I fix to zoom in/zoom out each image in each div? I would appreciate it if you suggest me how to fix this!
Thanks very much!
Here is the code
Jquery
$(function() {
$('.post-header .desc-image-list .full .natural-thumbnail #img').data('scale', '1');
$('#nav input').on('click', function() {
var scale = parseInt($('#img').data('scale')*10,10),
nScale = $(this).index()===0 ? scale+1 : scale-1;
nScale = parseFloat(parseInt(nScale,10)/10);
$('#img').data('scale', nScale).css('transform', 'scale('+nScale+')');
});
});
HTML
<div class="post-header">
<div class="desc-image-list">
<div class="full">
<div class="natural-thumbnail">
<img id="img" src="image1.img"> // After running only the first image has class style="transform: scale (1);"
<div id="nav">
<input type="button" value="Zoom in">
<input type="button" value="Zoom out">
</div>
</div>
<div class="natural-thumbnail" style="height: 600px;">
<img id="img" src="image2.img">
<div id="nav">
<input type="button" value="Zoom in">
<input type="button" value="Zoom out">
</div>
</div>
<div class="natural-thumbnail" style="height: 0;">
<img id="img" src="image3.img">
<div id="nav">
<input type="button" value="Zoom in">
<input type="button" value="Zoom out">
</div>
</div>
</div>
</div>
</div>
CSS
#nav {position: sticky; bottom: 20px; left: 50%; margin-left: -50px;}
#nav input {padding: 5px; font-size: 15px; cursor: pointer;}

In addition to #freedomn-m answer.
You can use img tag as a css selector .natural-thumbnail img you don't need any class. update below js and will work fine.
$(function() {
$('.post-header .desc-image-list .full .natural-thumbnail img').data('scale', '1');
$('#nav input').on('click', function() {
var scale = parseInt($('.natural-thumbnail img').data('scale')*10,10),
nScale = $(this).index()===0 ? scale+1 : scale-1;
nScale = parseFloat(parseInt(nScale,10)/10);
$('#img').data('scale', nScale).css('transform', 'scale('+nScale+')');
});
});

Id of element should be unique on one html page.
you can use this
$(this).parent().siblings('img').data('scale', nScale).css('transform', 'scale('+nScale+')');

jQuery panzoom scale all elements

I'm using jQuery panzoom to zoom an image and some div elements. This works generally but the elements positioned on top of the image don't stay in their original locations. Is there anyway to keep the div elements where they were whilst being scaled?
JSFiddle: https://jsfiddle.net/828wu2dy/
HTML:
<section id="inverted-contain">
<div class="panzoom-elements">
<div class="item item1">ITEM 1</div>
<div class="item item2">ITEM 2</div>
<div class="panzoom">
<img src="http://www.hdwallpapers.in/walls/enchanted_forest-wide.jpg">
</div>
</div>
<div class="buttons">
<button class="zoom-in">Zoom In</button>
<button class="zoom-out">Zoom Out</button>
<input type="range" class="zoom-range">
<button class="reset">Reset</button>
</div>
</section>
JS:
(function() {
var $section = $('#inverted-contain');
$section.find('.panzoom').panzoom({
$zoomIn: $section.find(".zoom-in"),
$zoomOut: $section.find(".zoom-out"),
$zoomRange: $section.find(".zoom-range"),
$reset: $section.find(".reset"),
$set: $section.find('.panzoom-elements > div'),
startTransform: 'scale(0)',
increment: 0.1,
minScale: 1,
maxScale: 2,
contain: 'invert'
}).panzoom('zoom');
})();
CSS:
.panzoom-elements {
width: 50%;
height: 400px;
}
.item {
position: absolute;
z-index: 10;
}
.item.item1 {
color: white;
background: black;
width:50px;
height:50px;
top: 300px;
left: 100px;
}
.item.item2 {
color: white;
background: black;
width:50px;
height:50px;
top: 200px;
left: 150px;
}
The other problem is that it also doesn't drag horizontally.
I've tried everything I can think of.

Part 1:
To fix your 'item' problem - try putting 'item' elements on one level with 'img' - I mean put them inside div class='panzoom'.
Works for me. ^ ^
<section id="inverted-contain">
<div class="panzoom-elements">
<div class="panzoom">
<div class="item item1">ITEM 1</div>
<div class="item item2">ITEM 2</div>
<img src="http://www.hdwallpapers.in/walls/enchanted_forest-wide.jpg">
</div>
</div>
<div class="buttons">
<button class="zoom-in">Zoom In</button>
<button class="zoom-out">Zoom Out</button>
<input type="range" class="zoom-range">
<button class="reset">Reset</button>
</div>
</section>
The method of thought that led me to this answer: while learning panzoom documentation for API, and examining your fiddle, I found that 'img' or anything that could be seen as direct selector to it (I mean like $('.panzoom').child().first() is nowhere mentioned in your script. That means that most probably img is zooming in/out not by itself. What I thought next - it seem that it's parent is changing. That would mean that you need to put your items inside of that changing space - it is the most logical way to handle it... I tried to test that idea - and it worked.
Part 2:
The other problem is that it also doesn't drag horizontally.
Add this to your CSS
.panzoom{ width: 1920px;}
This is the size of the image. Works for me.
Perhaps you also could add to .panzoom height of image. It is not required in your case where image is horisontal but it could matter when image is vertical.

How to Stick elements on page scroll

I have a one page, scrolling site with 5 main sections that have title bars that span across the top of each respective section. I want each title bar to stick at the top (well, relative top-underneath the top sticky header) as you scroll down the section. I can get one to stick, but I am having trouble making it so that one sticks and then it goes away once the next section's title bar gets to the sticky point.
I can't figure out another way to bind the HTML or CSS with the jQuery if else statement to make this work. I was thinking I could try to make it work within each sections' id but I don't think there's like a "withinId" jQuery selector.
I'm posting the latest jQuery I attempted (with just 2 out of the 5 variables I will need to make work here). I know it's wrong but I'm seriously stuck. Any ideas here? Thanks a million.
(abbreviated) HTML:
<div id="welcome">
<div class="title-bar">
<p>WELCOME</p>
</div>
</div>
<div id="global">
<div class="title-bar">
<p>GLOBAL ENGAGEMENT</p>
</div>
</div>
<div id="community">
<div class="title-bar">
<p>COMMUNITY</p>
</div>
</div>
<div id="resources">
<div class="title-bar">
<p>RESOURCES</p>
</div>
</div>
<div id="horizon">
<div class="title-bar">
<p>ON THE HORIZON</p>
</div>
</div>
CSS:
.title-bar {
padding: 5px;
position: relative;
}
.title-bar.sticky {
position: fixed;
top: 111px;
width: 100%;
z-index: 1040;
}
jQuery:
$(document).ready(function() {
var welcomeTitle = $('#welcome .title-bar');
var globalTitle = $('#global .title-bar');
var communityTitle = $('#community .title-bar');
var resourcesTitle = $('#resources .title-bar');
var horizonTitle = $('#horizon .title-bar');
var stickyOffset = $('#header').offset().top;
if ($w.scrollTop() > stickyOffset + 225) {
welcomeTitle.addClass('sticky');
globalTitle.addClass('sticky');
} else {
welcomeTitle.removeClass('sticky');
globalTitle.addClass('sticky');
}
if (welcomeTitle.hasClass('sticky') && globalTitle.hasClass('sticky')) {
welcomeTitle.removeClass('sticky');
} else {
//
}
});

jsBin demo
Give your "pages" a class="page" and listen for their positions using JS's Element.getBoundingClientRect on: DOM Ready, window Load, window Scroll
$(function() { // DOM ready
var $win = $(window),
$page = $(".page").each(function(){
// Memorize their titles elements (performance boost)
this._bar = $(this).find(".title-bar");
});
function fixpos() {
$page.each(function(){
var br = this.getBoundingClientRect();
$(this._bar).toggleClass("sticky", br.top<0 && br.bottom>0);
});
}
fixpos(); // on DOM ready
$win.on("load scroll", fixpos); // and load + scroll
});
*{box-sizing: border-box;}
html, body{height:100%;}
body{margin:0;font:16px/1 sans-serif; color:#777;}
.page{
position:relative;
min-height:100vh;
}
.title-bar {
position: absolute;
top:0;
width: 100%;
background:#fff;
box-shadow: 0 3px 4px rgba(0,0,0,0.3);
}
.title-bar.sticky {
position: fixed;
}
#welcome {background:#5fc;}
#global {background:#f5c;}
#community{background:#cf5;}
#resources{background:#fc5;}
#horizon {background:#5cf;}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="welcome" class="page">
<div class="title-bar">
<h2>WELCOME</h2>
</div>
</div>
<div id="global" class="page">
<div class="title-bar">
<h2>GLOBAL ENGAGEMENT</h2>
</div>
</div>
<div id="community" class="page">
<div class="title-bar">
<h2>COMMUNITY</h2>
</div>
</div>
<div id="resources" class="page">
<div class="title-bar">
<h2>RESOURCES</h2>
</div>
</div>
<div id="horizon" class="page">
<div class="title-bar">
<h2>ON THE HORIZON</h2>
</div>
</div>
Design-wise > add a padding-top to the first container element (inside your .page) to prevent content going underneath the title element (since it toggles from absolute/fixed positions).

Have a look at the Waypoints plugin.

You can probably make it a little easier on yourself by assigning each section a class and then add and remove the class from each section with jquery each function.
Try something like the following:
$(window).on( "scroll", function() {
$( ".section" ).each(function() {
if ( $(window).scrollTop() >= $(this).offset().top - 50 ) {
$( this ).addClass("sticky");
}else{
$( this ).removeClass("sticky");
}
});
});
Then your css
.section{
height: 200px;
background: #333;
border:1px solid #222;
position:relative;
}
.section .title-bar{
position:absolute;
top:0;
left:0;
width:100%;
height:50px;
}
.section.sticky .title-bar {
position:fixed;
}
And html
<div class="section">
<div class="title-bar"></div>
</div>
<div class="section">
<div class="title-bar"></div>
</div>
<div class="section">
<div class="title-bar"></div>
</div>

How to stop auto styling on html

I have some reveal slideshow that I need to convert to a single page html. I've used jQuery to strip the code of all the reveal.js added classes, javascript, and stylesheets. For some reason, when I resize the page, a style is added to the div that hides half the content.
My code before resizing:
<div id="body">
<div id="slides-body">
<section id="slide-Title">
<div id="div-Title">
<h2>
My Title
</h2>
<button id="button-Single-Page" style="padding-bottom: 5px" class="smallButton" onclick="singlepagehtmlformat()">Click here for the single page html version.</button>
</div>
</section>
</div>
</div>
My code after resizing:
<div id="body">
<div id="slides-body" style="width: 960px; height: 770px; left: 50%; top: 50%; bottom: auto; right: auto; transform: translate(-50%, -50%) scale(0.920625);">
<section id="slide-Title">
<div id="div-Title">
<h2>
My Title
</h2>
<button id="button-Single-Page" style="padding-bottom: 5px" class="smallButton" onclick="singlepagehtmlformat()">Click here for the single page html version.</button>
</div>
</section>
</div>
</div>
Why is this happening? How can I fix it?

That is not the default behavior, there must be a window resize event as pointed by #Bas Van Stein delegated in the code causing that.
To fix, it you can just remove the attr "style" from the target div.
<script>
$().ready(function(){
$( window ).resize(function() {
$("#slides-body").removeAttr("style");
});
});
</script>
Example : http://jsfiddle.net/mzg2zk48/2/

JQuery fade to different headers on single page website

I am creating a single page website with a fixed navigation. Within the navigation there are two containers, the one on the left contains a series of headers that change as you click the links on the right. I am setting the display on each of the classes containing the headers to 'none' and attempting to display them with Jquery when you click the links on the right. But nothing I am trying is working. Is it possible to get a smooth transition using the fade element and Jquery to achieve a series of headers that change upon clicking the links?
Here is my code:
<div class="single-page-nav">
<div class="nav-container">
<div style="max-width: 1200px; min-width: 960px; margin: 0 auto; position: relative;">
<div style="position: absolute; right: 0; top: 40px; z-index: 999999;">
Home
About Us
Practice Areas
Contact
</div>
</div>
<div class="left">
<div class="header001"><h1>Doug Peterson</h1></div>
<div class="header002"><h1>About Us.</h1></div>
<div class="header003"><h1>Practice Areas.</h1></div>
<div class="header004"><h1>Contact.</h1></div>
</div>
<div class="nav"></div>
<div class="clearboth"></div>
</div>
</div>
Help the student.

Here is a basic working version of what it sounds like you want. You will need to style it to look the way you want, but the behavior (showing/hiding divs on click of the menu) is there. You might think about changing the naming scheme for hrefs and divs to make it easier to select the header div based on the link clicked.
<html>
<head>
<script src="http://code.jquery.com/jquery-1.10.2.min.js"> </script>
<style>
.header{
display: none;
}
</style>
<script>
$(document).ready(function() {
var selected = '';
$( "a", "#headerLinks" )
.on( "click", function(){
var divCls = ".header00" + $( this ).attr( "href" ).substring($( this ).attr( "href" ).length -1 );
if( selected.length > 0 ){
$( selected, "#headers" )
.hide('fade', function(){
$( divCls, "#headers" )
.show('fade');
});
}else{
$( divCls, "#headers" )
.show('fade');
}
selected = divCls;
});
});
</script>
</head>
<body>
<div class="single-page-nav">
<div class="nav-container">
<div style="max-width: 1200px; min-width: 960px; margin: 0 auto; position: relative;">
<div id="headerLinks" style="position: absolute; right: 0; top: 40px; z-index: 999999;">
Home
About Us
Practice Areas
Contact
</div>
</div>
<div class="left" id="headers">
<div class="header header001"><h1>Doug Peterson</h1></div>
<div class="header header002"><h1>About Us.</h1></div>
<div class="header header003"><h1>Practice Areas.</h1></div>
<div class="header header004"><h1>Contact.</h1></div>
</div>
<div class="nav"></div>
<div class="clearboth"></div>
</div>
</div>
</body></html>