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Add number to end of div with jQuery

I'm using jQuery to create a simple addClass on hover. Hovering over a #science-panel-number div triggers a class of .active to be added to an #iphone-screen-number div.
Here is my jQuery:
$('#science-panel-1').hover(function(){
$('#iphone-screen-1').addClass('active');
},function(){
$('#iphone-screen-1').removeClass('active');
});
$('#science-panel-2').hover(function(){
$('#iphone-screen-2').addClass('active');
},function(){
$('#iphone-screen-2').removeClass('active');
});
$('#science-panel-3').hover(function(){
$('#iphone-screen-3').addClass('active');
},function(){
$('#iphone-screen-3').removeClass('active');
});
My HTML:
<div class="col-md-4">
<div id="science-panel-1" class="science-panel__item">
Content goes in here!
</div>
<div id="science-panel-2" class="science-panel__item">
Content goes in here!
</div>
<div id="science-panel-3" class="science-panel__item">
Content goes in here!
</div>
</div>
<div class="col-md-4">
div id="iphone-screen-1" class="iphone-screen-item">
<img src="IMG-url-here.jpg" alt="" />
</div>
div id="iphone-screen-2" class="iphone-screen-item">
<img src="IMG-url-here.jpg" alt="" />
</div>
<div id="iphone-screen-3" class="iphone-screen-item">
<img src="IMG-url-here.jpg" alt="" />
</div>
<div id="iphone-screen-4" class="iphone-screen-item">
<img src="IMG-url-here.jpg" alt="" />
</div>
<div id="iphone-screen-5" class="iphone-screen-item">
<img src="IMG-url-here.jpg" alt="" />
</div>
<div id="iphone-screen-6" class="iphone-screen-item">
<img src="IMG-url-here.jpg" alt="" />
</div>
</div>
<div class="col-md-4">
<div id="science-panel-4" class="science-panel__item">
Content goes in here!
</div>
<div id="science-panel-5" class="science-panel__item">
Content goes in here!
</div>
<div id="science-panel-6" class="science-panel__item">
Content goes in here!
</div>
</div>
This feels like a lot of code to do the same script. Is there a way to have one piece of script that can add the numbers it self? As #science-panel-1 will always link to to #iphone-screen-1 and so on.

This will do what you need. Just apply the handlers to elements whose ID begins with science-panel-, which should cover all of them...
$("[id^=science-panel-]").hover(function() {
// get the corresponding iphone-screen element id
var iphoneScreen = "#" + this.id.replace("science-panel-", "iphone-screen-");
$(iphoneScreen).addClass("active");
},function() {
var iphoneScreen = "#" + this.id.replace("science-panel-", "iphone-screen-");
$(iphoneScreen).removeClass("active");
});

I recommend changing the markup to include the data you need to drive the script:
<div data-target="#iphone-screen-1" id="science-panel-1" class="science-panel__item">...</div>
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
This allows you to select all the science panel items at once:
$('.science-panel__item')
and perform the exact same script on each of them:
$('.science-panel__item').hover(function () {
$($(this).data('target')).addClass('active');
// ^^^^^^^^^^^^^^^^^^^^^^
// use the data-target attribute as a selector
}, function () {
$($(this).data('target')).removeClass('active');
});
If you change the attribute and the selector, you'll have a reusable feature you can apply to any element:
$('[data-hover-target]').hover(function () {
$($(this).data('hoverTarget')).addClass('active');
}, function () {
$($(this).data('hoverTarget')).removeClass('active');
});

I'd firstly ask if the active class is strictly necessary? Can what you want be achieved with CSS if it is for styling only by using the :hover pseudoclass?
If you do need the .active class for some reason, I would change the markup to be a little more generic so that all the science panels had a CSS class of .science-panel and all the iphone screens had a class of .iphone-screen. Then you could simplify the JS to look like
$('.science-panel').on('mouseenter mouseleave', function(e) {
$(this).find('.iphone-screen').toggleClass('active', e.type === 'mouseenter');
});
This will find the .iphone-screen inside of the .science-panel that you hover over and toggle the class to on if the mouse enters and off when the mouse leaves it.
edit: I see you've updated your answer to include your markup, this answer was assuming that your iphone-screens were nested in the science-panels so this won't necessarily work for you if you don't/can't nest your markup

Change Text on another Div

Good evening Community,
I have a problem with my code.
HTML:
<a href="aboutme.php">
<div class='aboutus'>
<div id="mbubble">
stuff inside here
</div>
</div>
</a>
<div id='title'>
<div class="thome"><p style="letter-spacing:10;">Text BEFORE</p></div>
<div class="tabout"><p style="letter-spacing:10;">Text AFTER</p></div>
I want if I hover over the div "mbubble" that the class "thome" will change it's text. I tried to do that by making them visible / invisible.
CSS:
#mbubble:hover ~ .thome { visibility:hidden; }
#mbubble:hover ~ .tabout { visibility:visible; }
But it's sowhing no affect?
Can you tell me how you would do that? Or at least any way that's working to change the text by hovering?
Best regards,
Michael

How about this:
$('#mbubble').hover(function () {
$('.thome').html('<p style="letter-spacing:10;">NOW IT IS DIFFERENT</p>');
})

If your structure is really that simple, then a trick with pointer-events could work:
the idea is to kill pointer-events on a and reactivate it only on #mbubble, since when you hover a child, parent is hovered too, the selector can be taken from the parent .
a {pointer-events:none; }
#mbubble {pointer-events:auto;}
a:hover + #title .thome , .tabout {display:none;}
a:hover + #title .tabout {display:block;}
<a href="aboutme.php">
<div class='aboutus'>i don't trigger anything
<div id="mbubble">
I DO
</div>
</div>
</a>
<div id='title'>
<div class="thome"><p style="letter-spacing:10;">Text BEFORE</p></div>
<div class="tabout"><p style="letter-spacing:10;">Text AFTER</p></div>
Now, if you realize that without pointer-events but only a;hover it works , you may understand it can be usefull only if there is other content in <a> that should not react . only clicking on #mbubble will fire the link.Was your example too little ? if not, just use a:hover
http://caniuse.com/#search=pointer-events

It look doable in css, anyway, while not recommmended, there is a quick inline solution in javascript using the transversal DOM, like this:
You got to keep in mind that it can have strange behaviors, non easily copiable by right clicking, this is why inline javascripts should not be used directly. There is workaround around it, good luck.
<a href="aboutme.php">
<div class='aboutus'>
<div onmouseover="document.getElementById('title').children[0].children[0].textContent='Enter the void!'" id="mbubble">
stuff inside here
</div>
</div>
</a>
<div id='title'>
<div class="thome"><p style="letter-spacing:10;">Text BEFORE</p></div>
<div class="tabout"><p style="letter-spacing:10;">Text AFTER</p></div>
So a more nicer way is to use a function like this:
<a href="aboutme.php">
<div class='aboutus'>
<div onmouseover="changeText()" id="mbubble">
stuff inside here
</div>
</div>
</a>
<div id='title'>
<div class="thome"><p style="letter-spacing:10;">Text BEFORE</p></div>
<div class="tabout"><p style="letter-spacing:10;">Text AFTER</p></div>
<script>
function changeText() {
document.getElementById('title').children[0].children[0].textContent='Enter the void!'
}
</script>
Still, this isn't clean enough, the good way in javascript is to add an event listener, like this:
-
<a href="aboutme.php">
<div class='aboutus'>
<div id="mbubble">
stuff inside here
</div>
</div>
</a>
<div id='title'>
<div class="thome">
<p style="letter-spacing:10;">Text BEFORE</p>
</div>
<div class="tabout">
<p style="letter-spacing:10;">Text AFTER</p>
</div>
<script>
var toBeWatched = document.getElementById('mbubble');
toBeWatched.addEventListener("mouseover", function(event) {document.getElementById('title').children[0].children[0].textContent
= 'Enter the void!';setTimeout(function() { document.getElementById('title').children[0].children[0].textContent
= 'Text BEFORE!!!';
}, 2500);
}, false);
</script>
This way the html part is left untouched. (..)

Replace images by others with javascript

How can I replace images by others with javascript please ?
I've tried but something is wrong
if ($(".grimm")) {
$('.ch').
html(
$('.ch').
html().
replace('http://icons.iconarchive.com/icons/graphicrating/koloria/32/Mail-icon.png',
'http://icons.iconarchive.com/icons/graphicrating/koloria/32/Mails-icon.png')
);
}
<div class="grimm">
<div class="ch">
<img src="http://icons.iconarchive.com/icons/graphicrating/koloria/32/Mail-icon.png" />
</div>
</div>

Make sure to include jQuery, then your fiddle works fine: http://jsfiddle.net/dm9xkmkd/1/
But you can also handle this in one step without involving replace() or rewriting large chunks of HTML:
$('.grimm .ch img[src="http://icons.iconarchive.com/icons/graphicrating/koloria/32/Mail-icon.png"]').
attr('src', 'http://icons.iconarchive.com/icons/graphicrating/koloria/32/Mails-icon.png');
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="grimm">
<div class="ch">
<img src="http://icons.iconarchive.com/icons/graphicrating/koloria/32/Mail-icon.png" />
</div>
</div>

jQuery - Having the same HTML twice renders my script inoperative

I'm quite new to jQuery and I have come up with script which affects the HTML below. The script works perfectly and I have gotten it to whether I would like. The problem I am having
is when I'm duplicating the HTML and the script, once clicked, only shows the last project-info and project-images within the document. I've tried quite a few different methods just as
$(this).children()
but I can't seem to get any to work. Any help would be much appreciated.
Thank you
jQuery
$(document).ready(function() {
$('.apple').click(function() {
$('#darken').addClass('dark');
$('.project-info').delay('1000').slideDown('slow');
$('.project-images').delay('1000').fadeIn('slow');
});
});
$(document).ready(function() {
$('.close').click(function() {
$(".project-info, .project-images").fadeOut('slow');
});
});
HTML
<div class="apple">
<img src="http://mybroadband.co.za/photos/data/500/apple-logo.jpg"/>
</div>
<div class="project-info" style="display:none;">
<div class="project-title">
<h1>hello world</h1>
</div>
<div class="details">
<p>dkusdufhu suskueh sukh suefhuksdfnkuesnfukneukf nseuknfukenfuk nukefnuksn fukfuksukfnuksenf unseukfunfukfunufen u u u ef euhfuehfeufu g gfd gerjkg rjgrjg j js grg rgsg dkusdufhu suskueh sukh</p>
<div class="links">
link
</div>
<div class="close"></div>
</div><!-- end of project info -->
</div>
<div class="project-images" style="display:none;">
<div class="-images">
<img src="http://cdn4.spiegel.de/images/image-499233-galleryV9-grcy.jpg" />
<img src="http://cdn4.spiegel.de/images/image-499233-galleryV9-grcy.jpg" />
</div>
<div class="close end"></div>
</div> <!-- Project Images -->
</div> <!-- # Darken -- >

You're nearly there. Children wouldn't work in the above example because the divs with class 'apple' don't have any children. You need to move that first closing tag to the bottom of the portfolio item so that your html for each portfolio item is structured like this:
<!--PORTFOLIO ITEM-->
<div class="apple">
<!-- ICON GOES HERE-->
<img src="http://mybroadband.co.za/photos/data/500/apple-logo.jpg"/>
<!-- PROJECT INFO GOES HERE-->
<div class="project-info" style="display:none;">
</div>
<!-- PROJECT IMAGES GOES HERE-->
<div class="project-images" style="display:none;">
</div>
</div>
I.e. the divs with classes 'project-info' and 'project-images' are inside the 'apple' div. Then change this:
$('.project-info').delay('1000').slideDown('slow');
$('.project-images').delay('1000').fadeIn('slow');
to this:
$(this).children('.project-info').delay('1000').slideDown('slow');
$(this).children('.project-images',this).delay('1000').fadeIn('slow');
If you've updated your html correctly, $(this) will be pointing to a div element that does indeed have children with classes 'project-info' and 'project-images'. Here's an updated JSFiddle that should do you what you want: http://jsfiddle.net/8k3Ms/1/

JavaScript animate function doesn't work

This is what the code looks like.
<head>
<link type="text/css" rel="stylesheet" href="C:\Users\User\Desktop\css1.css" />
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script src="C:\Users\User\Desktop\js.js"></script>
</head>
<body>
<div id="header_wrap">
<div id="header">
<div id="logo">
LOGO
</div>
<div class="nav">
<a href="http://www.google.se">
Stuff
</a>
<a href="javascript:void(0)">
Other stuff
</a>
<a href="javascript:void(0)">
More stuff
</a>
</div>
<div class="mobile_nav"></div>
<div class="mobile_nav_menu">
<div class="mobile_menu">
<span>Stuff</span>
<span>Other stuff</span>
<span>More stuff</span>
</div>
<div class="mobile_close">
</div>
</div>
</div>
</div>
<div class="image_container">
<div class="inner_content" id="slide1">
<h2>
CONTENTS
</h2>
</div>
<a class="button" href="javascript:void(0)"></a>
</div>
</body>
the .js file contains this code
setTimeout(function(){
$("#slide1").css('opacity', '1');
},800);
setInterval(function(){
$(".button").toggleClass("opacity");
},1000);
//Navigation
$(".mobile_nav").click(function() {
$(".mobile_nav_menu").animate({right: 0});
})
$(".mobile_close").click(function() {
$(".mobile_nav_menu").animate({right: -270});
})
Can anyone help me out with what I'm doing wrong and how it can be fixed?
Thank you! /AJ
UPDATE: The .js loads (tried the alert function), but does not fill the function it should. Original pen can be found on http://codepen.io/yuriylianguzov/pen/qjwEe

One of the problems is that you are trying to reference a javascript file from a physical file path, and not a url (or relative path). You can't use your harddrive path in an html file to include javascript.
<script src="C:\Users\User\Desktop\js.js"></script>
If your javascript is in the same folder as your html, try something like this:
<script src="js.js"></script>
I'm not exactly sure what the expected behavior for the JavaScript is, because it appears to be doing what it is intended to do. If you look at the DOM in the codepen link that you provided the element with the id of 'slide1' has its opacity style set to 1 (see below) and the anchor tag with class of 'button' is getting the class 'opacity' toggled on and off every second (not depicted below, but you can see it happening in firebug).
<div class="image_container">
<div id="slide1" class="inner_content" style="opacity: 1;">
<h2>
We are who we choose to be.
</h2>
</div>
</div>
The other two click handler's are targeting empty elements (the element with class of 'mobile_nav', and the element with class of 'mobile_close') so they aren't going to do anything.
$(".mobile_nav").click(function() {
$(".mobile_nav_menu").animate({right: 0});
})
$(".mobile_close").click(function() {
$(".mobile_nav_menu").animate({right: -270});
})
<div class="mobile_nav"></div>
<div class="mobile_nav_menu">
<div class="mobile_menu">
<span>Projects</span>
<span>Profile</span>
<span>Contact</span>
</div>
<div class="mobile_close"></div>
</div>
I hope this helps!

1) Some of the elements your javascript is acting on don't have any content
2) Change the line $(".mobile_nav_menu").animate({right: 0}); to: $(".mobile_nav_menu").animate({"right": "0"}); and do the same with the other one, though it won't have any functionality, really.
3) your class mobile_nav_menu needs to have css that says position:relative for the attribute "right" to work.
4) I'd recommend moving your mobile_close div outside the mobile_nav_menu div so it doesn't move when you click it
If anyone has stuff to add, please do so.