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How to change text under an image when the image is clicked/hovered on

I'm creating a page for a company where they have pictures of the 4 founders all side by side. The text under all 4 images needs to change based on what photo is clicked or hovered on. So one says "mark" in bold and under that it will have his qualifications. But that will all be replaced when I click "kim" who is the next picture.
I'm very new to HTML, CSS, and have never tried javascript so this is my first attempt.
I want the text to be styled the way I want, but I can't find a way to update it all. I only figured out that I can print raw text.
Is there a way to call a div to put the text there and replace it with a new div for each image click?
Like instead of writing .html("Mark does xyz") you could instead paste in the entire div "tr1" with the changed button and heading and paragraph?
<div id="trainers">
<h1><b>Meet Our Trainers</h1>
<img src="jackf.jpg" id="Mark" alt="Mark" width="17%" height="40%">
<img src="kimsond.jpg" id="Kim" alt="Kim" width="17%" height="40%">
<div id="tr1">
<h1><b><br>Mark</b></h1>
<p>Mark has been a personal trainer</p>
<a class="btn" href="#">Book With Mark</a>
</div>
<div id="tr2">
<h1><b><br>Kim</b></h1>
<p>Kim is a nutritionist</p>
<a class="btn" href="#">Book With Kim</a>
</div>
</div>
<script>
$('#Mark').click(function() {
});
$('#Kim').click(function() {
});
</script>

You can use show/hide method for your requirement.
$('#Mark').click(function() {
$('#tr1').show();
$('#tr2').hide();
});
$('#Kim').click(function() {
$('#tr1').hide();
$('#tr2').show();
});
$('#Mark').click(function() {
$('#tr1').show();
$('#tr2').hide();
});
$('#Kim').click(function() {
$('#tr1').hide();
$('#tr2').show();
});
#tr2{
display:none;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="trainers">
<h1><b>Meet Our Trainers</h1>
<img src="jackf.jpg" id="Mark" alt="Mark" width="17%" height="40%">
<img src="kimsond.jpg" id="Kim" alt="Kim" width="17%" height="40%">
<div id="tr1">
<h1><b><br>Mark</b></h1>
<p>Mark has been a personal trainer</p>
<a class="btn" href="#">Book With Mark</a>
</div>
<div id="tr2">
<h1><b><br>Kim</b></h1>
<p>Kim is a nutritionist</p>
<a class="btn" href="#">Book With Kim</a>
</div>
</div>

$('#Mark').click(function() {
var elementToClone = document.getElementById('tr1');
var clone = elementToClone.cloneNode(true);
var container = document.getElementById('container');
// Then you need to append that cloned element into a container on the page.
container.appendChild(clone);
});
The container will be en element in your HTML that currently is not there. This is just a place where you want this cloned HTML to go:
<div id="container></div>
This will get you to a point where you've copied the HTML you need and placed it where you want it on the page. When you click a different image, you'll need to remove this HTML, clone the other HTML and append it to container. You'll also probably need an if statement in there to check if container contains something already.
You're using jQuery in your question, so this answer uses the jQuery click function -- if you don't have jQuery included, you'll need it.
You can also use these vanilla js click methods:
<img id="Mark" onclick="doHTMLAppendFunction()" src="foo.jpg" />
or
document.getElementById('Mark').addEventListener('click', doHTMLAppendFunction);

You're trying to use JQuery to achieve this and following does the job. There used the common class "trainer-text" to hide all overlay texts to hide at the initial point. Use some css to make the text on your images. Refer the following to achieve that. https://www.w3schools.com/howto/howto_css_image_overlay.asp
/*
Use the following if you need display text for hover event
*/
$("#Mark").mouseover(function(){
$("#tr1").css("display", "block");
});
$("#Mark").mouseout(function(){
$("#tr1").css("display", "none");
});
$("#Kim").mouseover(function(){
$("#tr2").css("display", "block");
});
$("#Kim").mouseout(function(){
$("#tr2").css("display", "none");
});
/*
Use the following if you need display text for click event
*/
$('#Mark').click(function() {
$('#tr1').show();
$('#tr2').hide();
});
$('#Kim').click(function() {
$('#tr1').hide();
$('#tr2').show();
});
.trainer-text {
display: none;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="trainers">
<h1><b>Meet Our Trainers</b></h1>
<img src="jackf.jpg" id="Mark" alt="Mark" width="17%" height="40%"/>
<img src="kimsond.jpg" id="Kim" alt="Kim" width="17%" height="40%"/>
<div id="tr1" class="trainer-text">
<h1><b><br>Mark</b></h1>
<p>Mark has been a personal trainer</p>
<a class="btn" href="#">Book With Mark</a>
</div>
<div id="tr2" class="trainer-text">
<h1><b><br>Kim</b></h1>
<p>Kim is a nutritionist</p>
<a class="btn" href="#">Book With Kim</a>
</div>
</div>

How to place div items into jQuery Slider showing a minimum of 5 elements with Left-Right slider to view more elements?

I have div elements on a page with col-sm-3 classes. So far, I have 6 of these elements and so, 4 elements are on 1 row and 2 are on the next row which fill half this row. I am using Bootstrap.
I want to make all these elements be contained on 1 row in a slider using JQuery with a minimum of 5 elements showing and be able to click on left-right arrow buttons to view all elements.
I found this example JQuery called lightSlider: http://sachinchoolur.github.io/lightslider/ There are 2 examples on this website and I would like to make mine similar to the second red example.
I have tried to use the lightSlider class on my elements, but no change is seen.
Here is my HTML:
<div class="row whiteBG" id="lightSlider">
#foreach (var item in Model)
{
<div class="col-sm-3 align-centre">
<img src="#item.OutputImage" alt="#item.Image" />
<a href="#Url.Action("Products", "Home", new { id = item.Id, categoryName = item.Name })">
<div class="blend-box-top category-head" style="background: #0197BA url(#item.OutputImage) no-repeat 50% 0%;">
<div class="item-container">
<div class="desc-plus">
<p>#item.Name</p>
<p>+</p>
</div>
</div>
</div>
</a>
</div>
}
</div>
I have a row which added multiple amounts of col-sm-3 div elements.
I also placed this below my HTML before the ending body tag:
<script type="text/javascript">
$(document).ready(function() {
$("#lightSlider").lightSlider();
});
</script>
I am using Visual Studio and JQuery is loaded in by default at the bottom of the _Layout.cshtml file:
#Scripts.Render("~/bundles/jquery")
#Scripts.Render("~/bundles/bootstrap")
#RenderSection("scripts", required: false)
</body>
</html>

<div class="col-sm-2 align-centre">
Change your class from 3 > 2 so that 5 will fit.

It was the first time using JQuery for me and the problem was that I was including all the classes in my HTML that I saw in the Chrome Developer Tool HTML for the second example slider here: http://sachinchoolur.github.io/lightslider/index.html This was not necessary and caused errors since I was only meant to use 1 class which then automatically added new classes to my HTML.
Firstly, I used the lightslider.js, lightslider.css and controls.png files into my project available here: https://github.com/sachinchoolur/lightslider/tree/master/src
I then placed the folling script into my HTML page before the ending body tag:
$(document).ready(function () {
window.prettyPrint && prettyPrint()
$('#content-slider').lightSlider({
keyPress: false,
item: 5,
loop: true,
onSliderLoad: function () {
$('#content-slider').removeClass('cS-hidden');
}
});
});
</script>
This is available on the GitHub repository link above - I changed it a bit to make the item attribute display 5 elements initally.
It is crucial that you place this script after the script that calls the JQuery. It took me a day to find out this was the problem.
In lightslider.css you need to change the filePath to include the image used for the left-right arrows correctly. the class is .lSAction > a. I just placed mine in the Images folder and this is the attribute that I changed: background-image: url('Images/controls.png');
This is my HTML:
What you need to know is that I only include 1 class in my HTML list: ul<id="content-slider"> which will add the other necessary lightSlider to create the second example slider displayed here: http://sachinchoolur.github.io/lightslider/index.html
<div class="row whiteBG">
<ul id="content-slider" >
#foreach (var item in Model)
{
<li class="col-sm-4 align-centre">
<a href="#Url.Action("Products", "Home", new { id = item.Id, categoryName = item.Name })">
<img src="#item.OutputImage" alt="#item.Image" />
<div class="blend-box-top category-head" style="background: #0197BA url(#item.OutputImage) no-repeat 50% 0%;">
<div class="item-container">
<div class="desc-plus">
<p>#item.Name</p>
<p>+</p>
</div>
</div>
</div>
</a>
</li>
}
</ul>
</div>
I hope this can help someone else going through a similar problem. :)

Getting source of image stored in block by using jquery

I'm making a slider for my webpage and I'm using jquery's plugin called "Cycle". I have faced a problem with accessing source of images used in slider. It's quite hard to explain so here is my code from 'head' part:
<script type="text/javascript" src="jquery-1.11.1.min.js"></script>
<script type="text/javascript" src="jquery.cycle.all.js"></script>
<script type="text/javascript">
$('#slider').before('<ul id="pager">').cycle({
fx: 'scrollHorz',
speed: 900,
timeout: 5500,
pause: 1,
pager: '#pager',
pagerAnchorBuilder: function(idx, slide) {
return '<li><img src="' + slide.src + '" width="120" height="65" /></li>';
}
});
</script>
Here is the html part:
<div id="slider_container">
<div id="slider">
<div class="items">
<img src="1.jpg"/>
<div class="info">
<h2>Tile Nr. 1</h2>
</div>
</div>
<div class="items">
<img src="2.jpg"/>
<div class="info">
<h2>Tilte Nr. 2</h2>
</div>
</div>
</div>
<div id="pager">
</div>
</div>
In my slider div I want to display blocks, each of them containing image and some title but in pager div I want to display only the images from those blocks used in slider. I'm sure that the problem is in slide.src expression in the third javascript. How should I change that expression to get the source of an image stored in appropriate items block?

Could you set up a jsFiddle that sources the jquery files you need here?
My guess is that slide.src isn't what you want. If slide is a reference to an element in the DOM, then you access its 'source' attribute like this: $(slide).attr('src')
Updated:
Turns out 'slide' is the containing div so we need this instead:
$(slide).find('img').attr('src')

When you inspect the argument slide inside pagerAnchorBuilder-function you find slide being a div-element with class items and containing the img-element as first child-element. So you can access the img and it's src-attribute like so:
pagerAnchorBuilder: function(idx, slide) {
var source = $('img', slide).attr('src');
return '<li><img src="' + source + '" width="120" height="65" /></li>';
}
There are also some other ways of writing it, all with same result:
var source = $(slide).find('img').attr('src');
// or in native js
var source = slide.querySelector('img').getAttribute('src');
var source = slide.querySelector('img').src;
var source = slide.firstElementChild.src

If href equals id of another div do function

I have a hidden div with the details of a thumbnail that is visible on the page. When you click on the thumbnail, it should fadein or slideup the div with details.
I have set with jquery incremented ID's to each ".portfolio-item-details" to identify each one and then have set with jquery the same ID's to the href of the thumbnail.
<section id="portfolio1" class="portfolio-item-details hidden">content</section>
<a class="open-portfolio-item-details" href="#portfolio1" title="">
<img src="thumbnail.jpg">
</a>
<section id="portfolio2" class="portfolio-item-details hidden">content</section>
<a class="open-portfolio-item-details" href="#portfolio2" title="">
<img src="thumbnail.jpg">
</a>
Since this is done dynamically, how can I with jquery fadeIn or slideUp the ".portfolio-item-details" if the href is equal to the ID. Basically thumbnail with "#portfolio1" should slide up the div with "#portfolio1" on click.
This is my jquery code which to add the IDs and HREF is working perfectly but not working to slideUp or fadeIn the div with the same ID.
$(document).ready(function () {
var i=0;
$(".portfolio-item-details").each(function(){
i++;
var newID="portfolio"+i;
$(this).attr("id",newID);
$(this).val(i);
});
var i=0;
$(".open-portfolio-item-details").each(function(){
i++;
var newReadMoreHREF="#portfolio"+i;
$(this).attr("href",newReadMoreHREF);
$(this).val(i);
if ($(".portfolio-item-details").attr("id") == "newReadMoreHREF") {
$(this).fadeIn();
}
});
});
SOLUTION
Thanks to Austin's code, I was able to modify it to work with mine.
Check here: http://jsfiddle.net/jdoimeadios23/xpsrLyLz/

You want something like this?
HTML
<div class="image" value="1">
<img src="thumbnail.jpg" />
</div>
<div id="portfolio1" class="details">details</div>
<div class="image" value="2">
<img src="thumbnail.jpg" />
</div>
<div id="portfolio2" class="details">more details</div>
JS
$(document).ready(function () {
$('.details').fadeOut(1);
$(".image").click(function () {
var num = $(this).attr("value");
$("#portfolio"+num).fadeIn(1000);
});
});
JSFiddle Demo
You don't even need to bother with ID's so long as the next div below each image is it's details.

The problem is in this block
if ($(".portfolio-item-details").attr("id") == "newReadMoreHREF") {
$(this).fadeIn();
}
Because you're having two errors, the first one is that newReadMoreHREF is a variable, not a string in your HTML or a value to any variable and so on.
Second thing is, that in the variable declaration you're using "#portfolio"+i;, which would be good if you were about to select an element. But using it in the jQuery iif statement with .attr('id') will again cause a havoc.
The thing that you need is something like this
$(".open-portfolio-item-details").each(function(){
i++;
var newReadMoreHREF="portfolio"+i; // removed #
$(this).attr("href",newReadMoreHREF);
$(this).val(i);
if ($(".portfolio-item-details a").attr("id") == newReadMoreHREF) {
// you need to access the hyperlink in the element, not
// the element itself. this portfolio1 ID is of a hyperlink
// again here, this is referencing the main iterator.
$(this).fadeIn();
// are you sure you want to fade the .open-portfolio-item-details?
}
});
Removed the hash sign and then called the variable value to check against. It would execute to be true if the condition is true.

Try this:
HTML:
content
<section id="portfolio2" class="portfolio-item-details hidden">content</section>
<a class="open-portfolio-item-details" href="#portfolio2" title="">
<img src="thumbnail.jpg">
</a>
<div id="portfolio1" class="portfolio" hidden>Portfolio 1</div>
<div id="portfolio2" class="portfolio" hidden>Portfolio 2</div>
Jquery:
$('a.open-portfolio-item-details').on('click', function (e) {
e.preventDefault();
var id = $(this).attr('href');
$('.portfolio').hide();
$('.portfolio' + id).fadeIn();
});
Couldn't get the fiddle link for some reason.
Edit:
I don't know the name of the class that shows the content you want displayed, so as an example I'm using portfolio. Try putting this code into a fiddle

Getting the HTML of a DIV with another element

I have a bunch of thumbnails. Of these I know the link in my JQuery script - however, I need to get the HTML from the .caption, and I just can't make it do that.
I've tried the following things
$('a.thumbnail').click(function() {
$(this).closest('.caption').html()
$(this).find('.caption').html()
$(this).children('.caption').html()
});
Here's the HTML:
<div class="thumbnail">
<a href="#" class="thumbnail">
<img src="{{ URL::asset($item->image) }}" alt="">
</a>
<div class="caption" align="center">
{{ $item->name }}
</div>
</div>

This would also work, since the .caption is a sibling of your a:
$('a.thumbnail').click(function() {
$(this).siblings('.caption').html();
});
Why yours don't work:
$(this).closest('.caption').html() // .caption is not an ancestor of the a
$(this).find('.caption').html() // .caption is not a descendant of the a
$(this).children('.caption').html() // .caption is not a child of the a

Try:
$('a.thumbnail').click(function() {
$(this).closest('div.thumbnail').find('.caption').html();
});
jsFiddle example
When you click the image, you need to use .closest() to traverse up to the containing div, and the use find to go back down to .find() the caption.

You could try:
$(this).parent().find('.caption').html();

Try this:
$(".caption").text();
or Perhaps
$(".thumbnail").find(".caption").text();
Although these might give you the entire class. Have thought about adding ids?
I've done this before using the Razor engine:
#foreach (var temp in ListOfStuffWithIds)
{
<tr class="class" >
<td class="tdClass" >
<input id="#temp.Id" type="checkbox" /></td>
<td class="tdClass2">#temp.Id</td>
<td>#temp.Name</td>
</tr>
}