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Remove and re-add Class Attribute inside a <div> unordered list item

This is the answer as i was able to solve.
Wanted to change the css class="jsTree-clicked" after the button click event happened from Hyperlink1 to Hyperlink3.
$(document).ready(function () {
//remove Class
$('#myJSTree').find('.jsTree-clicked').removeClass('jsTree-clicked');
//need to do add it to List Item which has Id =3
//check the list item which has id =3 if so add the class to it
// It is not a button click event.
$('#myJSTree li').each(function (i, li) {
console.log('<li> id =' + $(li).attr('id'));
var myIdVal = $(li).attr('id');
if (myIdVal == 3) {
$(this).addClass('jsTree-clicked');
}
});
});
.jsTree-clicked { background-color:red;}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="myJSTree">
<ul class="nav nav-list">
<li id="1">
<a class="jsTree-clicked" title="Hyperlink1">HyperLink1</a>
</li>
<li id="2">
<a title="Hyperlink2">HyperLink2</a>
</li>
<li id="3">
<a title="Hyperlink3">HyperLink3</a>
</li>
</ul>
</div>
When the Hyperlink is clicked the JsTree adds a class="jsTree-clicked" . When you navigate to a different node it will remove and re-add the same class to the navigated node.
Expected
I want a function to remove [class="jsTree-clicked"] for the given List Item based on ID inside the div.
AND
Re-add [class="jsTree-clicked"] to any ListItem by passing the Key i.e ID .
I hope I was able to explain my problem.
Thank you
My JSTree is a third party open source.

$('.nav-list').on('click', 'li', function() {
$('.nav-list li.active').removeClass('active');
$(this).addClass('active');
});
.active{
background-color:red;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div id="myJSTree">
<ul class="nav nav-list">
<li id="1">
<a title="Hyperlink1">HyperLink1</a>
</li>
<li id="2">
<a title="Hyperlink2">HyperLink2</a>
</li>
<li id="3">
<a title="Hyperlink3">HyperLink3</a>
</li>
</ul>
</div>

Maybe this is helpful to you?
$(function () { $('#myJSTree').jstree(); });
const toggle = (e) => {
if (+$("#test").val()>=10 ) {
e.target.classList.remove("jstree-clicked");
console.log("You entered an invalid number.")
}
console.log(e.target)
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.2.1/jstree.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.2.1/themes/default/style.min.css" />
<div id="myJSTree">
<ul>
<li id="1">
<a title="Hyperlink1" onclick="toggle(event)">HyperLink1</a>
</li>
<li id="2">
<a title="Hyperlink2">HyperLink2</a>
</li>
<li id="3">
<a title="Hyperlink3">HyperLink3</a>
</li>
</ul>
</div>
<input type="text" value="3" id="test"> < 10
I have simply included a rudimentary toggle() function to demonstrate the point of removing and ading the class name "jsTree-clicked". Please note that JStree assigns other classes to the node dynamically that should be kept there.
It appears to me as if the class jstree-clicked (not: jsTree-clicked) is set by JSTree after an element was clicked. You might have to play aroud with this further to get what you want.
The following might be more what you want. It will "link" to the given href only when the predefined test criteria in checkinput() is met:
$(function () { $('#myJSTree').jstree(); });
const checkinput = (e) => {
if (+$("#test").val()>=10 ) {
console.log("You entered an invalid number.")
} else document.location.href=e.target.href;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.12.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.2.1/jstree.min.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/jstree/3.2.1/themes/default/style.min.css" />
<div id="myJSTree">
<ul>
<li id="1">
<a title="Hyperlink1" href="https://jsonplaceholder.typicode.com/users/1" onclick="checkinput(event)">HyperLink1</a>
</li>
<li id="2">
<a title="Hyperlink2" href="https://jsonplaceholder.typicode.com/users/2">HyperLink2</a>
</li>
<li id="3">
<a title="Hyperlink3">HyperLink3</a>
</li>
</ul>
</div>
<input type="text" value="3" id="test"> < 10<br>
HyperLink1 will link to the page "user1" if the input is valid, <br>otherwise an eror will be shown in the console.

Retrieving the values in an un - ordered list and list items

I have html rendered in the format below.
I want to be able to get the values 13,14,15 and store in different variables.
I want to be able to get the value id=9 as well for this row.
I will be updating a table and needs this Id together with the other rows.
Here is the html rendered
<li class="main">
<ul class="sub">
<li id="9">
<div class="innera">13</div>
<div class="innerb">14</div>
<div class="innerc">15</div>
<div class="innerpencil">
<img class="modify" src="/images/icon-pencil" />
</div>
</li>
</ul>
<li>
Here is the jquery I am trying to write
$(document).on("click", "img.modify", function () {
var rowA = $("ul[class='sub'] li[div.class innera]")
var rowB = $("ul[class='sub'] li[div.class innerb]")
var rowB = $("ul[class='sub'] li[div.class innerc]")
var Id of row ?
});
Right now I am not getting anything for the variables? Kindly assist.

I think you just need to review the jQuery (CSS) selectors: https://api.jquery.com/category/selectors/
$("ul[class='sub'] li[div.class innera]") won't match anything.
$('ul.sub>li>div.innera') would work, but maybe you want something a little different. Take a look at the selectors docs, and some trial and error :)

Can't you use a foreach loop on the li tag?
Like this?
$(document).on("click", "img.modify", function () {
var id = $('.sub > li').first().attr("id");
console.log(id);
$('#'+id+' > .divValue').each(function () {
var variableName = $(this).text();
console.log(variableName);
});
});
}
I would add an class to the elements value you want.
Like this:
<li class="main">
<ul class="sub">
<li id="9">
<div class="innera divValue">13</div>
<div class="innerb divValue">14</div>
<div class="innerc divValue">15</div>
<div class="innerpencil">
<img class="modify" src="/images/icon-pencil" />
</div>
</li>
</ul>
<li>

Displaying selection text in span

So let's say I have this code:
<span id="select_list">
<ul>
<li><a id="1">1</a></li>
<li><a id="2">2</a></li>
<li><a id="3">3</a></li>
</ul>
</span>
<span id="selection"></span>
And let's also assume that there are a lot of list elements, ex. '4,5,6,7... etc'.
Can I get a html file, that is basically just text, that corresponds to the list element's ID (ex. 1.html, 2.html,... etc), to show in 'selection'?
If so how?
Thanks for your time. Hope I explained it well.

Something like this (jQuery) should work:
var list = $("#select_list");
var sel = $("#selection");
$("a", list).on("click", function(){
var id = $(this).attr("id");
sel.load(id+".html");
});

<div id="select_list">
<ul>
<li id="1">1</li>
<li id="2">2</li>
<li id="3">3</li>
</ul>
</div>
<div id="selection"></div>
i would use a div not span spans are for if you want to change the size of something particular like this:
<li id="1" href="#"><a href="#"><span style="color: red;
font-size: 30px">1</span></a></li>
and from what i am understanding you want a selector to select them in css?
if so this is how:
#select_list ul li:nth_child(1) {
}
or
#select_list ul li#2 {
}
hope this helps you

I would suggest using data-attributes instead of IDs.
HTML
<ul class='selection-list'>
<li data-name='Dog'>Dog</li>
<li data-name='cat.html'>Cat</li>
<li data-name='45'>Fourty Five</li>
<li data-name='Triangle'>Three sides</li>
</ul>
<div class="output js-output"></div>
jQuery
var $output = $('.js-output');
$('.selection-list li').on('click', function() {
var selectionValue = $(this).data('name');
$output.text(selectionValue);
});
CSS
.selection-list li {
cursor: pointer;
}
jsFiddle
iframe
I'm starting to think that you are asking for an iframe with dynamic source. The question is unclear. You may want to try and rewrite it. - Here is what I think you may be after...
HTML
<ul class='selection-list'>
<li data-url='http://reputable.agency'>Reputable Agency</li>
<li data-url='http://perpetual.education'>Perpetual Education</li>
<li data-url='http://example.com/index.html'>Example.com</li>
</ul>
<iframe src='http://example.com' class="output js-output"></iframe>
JavaScript / jQuery
var $output = $('.js-output');
$('.selection-list li').on('click', function() {
// get the 'data-url' from the element...
var selectionValue = $(this).data('url');
// put that data-url into the src attribute of the iFrame
$output.attr('src', selectionValue);
});
Also..
Note that if you are using the same domain for all of these, you can build those urls differently to keep things simple.
<li data-url='index.html'>Example.com</li>
$output.attr('src', 'http://yoursite.com/' + selectionValue);
jsFiddle
AJAX
Now I'm wondering if you mean AJAX. Here is an example - but it's not tested because I don't have access to a bunch of relative URLs - but here is the basics - and should lead you to the right documentation.
HTML
<ul class='selection-list'>
<li data-url='index.html'>Reputable Agency</li>
<li data-url='index.html'>Perpetual Education</li>
<li data-url='index.html'>Example.com</li>
</ul>
<div class="output js-output"></div>
JavaScript / jQuery
var $output = $('.js-output');
var getOtherPage = function(target) {
$.ajax({
url: target,
success:function(response){
$output.html(response);
},error:function(){
alert("error");
}
});
};
$('.selection-list li').on('click', function() {
var selectionValue = $(this).data('url');
getOtherPage(selectionValue);
});

Adding a class to a div with an id equal to a link

I wonder if someone could please help me.
I'm trying to add a class of 'active' to a div with the same id as a link. When the page loads the first div will be active but I then want to click on a link and add a class of active to a div on the page so I display this div.
HTML:
<ul id="items">
<li>
item 1
</li>
<li>
item 2
</li>
<li>
<a href="#" id="3" item 3</a>
</ul>
<div id="product-info">
<div id="1" class="active">
product info
</div>
<div id="2">
product info
</div>
<div id="3">
product info
</div>
</div>
jQuery:
var buttons = $('#items').find('a');
buttons.click(function(){
var id = $(this).attr('id');
var product = $('product-info div');
var productId = product.attr('id');
product.removeClass('active');
}
I'm guessing I need to add an if statement here to say something like if id equal to product id add class
I've tried a few variations but just can't get it. Any help to solve this would be fantastic. If you want to go one step further and suggest a better way I'm all ears.
Thanks in advance

$( 'li' ).on( 'click', function() {
$('div').eq( $(this).index() ).addClass( 'active' );
});
But you need more restrictive to selectors.
If you want to show only one div at a time :
$( 'li' ).on( 'click', function() {
$('div').removeClass( 'active' ).eq( $(this).index() ).addClass( 'active' );
});

I usually do this by setting the href of the link tag to point at the id of the target element and then use the href attribute inside the jQuery function. So, something like:
HTML:
<ul id="items">
<li>
item 1
</li>
<li>
item 2
</li>
<li>
item 3
</ul>
<div id="product-info">
<div id="1" class="active">
product info
</div>
<div id="2">
product info
</div>
<div id="3">
product info
</div>
</div>
jQuery:
$("#items").find("a").click(function(e) {
$("#product-info").find("div").removeClass("active"); $(e.href).addClass("active", true);
});

I hope you will not get me wrong, but you shouldn't have elements with the same id. Id's are the means of "identification" and because of that they need to be unique: https://stackoverflow.com/a/9454716/880114
Arguably, browser implementations are to blame here, because of being too loose on such important rules' following.

html
what i understand you want to replace and hide your divs depending on link click.That way You dun need same ids for more than one id :)
here class hide should b display:none; that will work for you
<ul class="au-img">
<li id="1">1</li>
<li id="2">2</li>
<li id="3">3</li>
</ul>
<div class="default-text"></div>
<div class="about-1" >1</div>
<div class="about-2 hide" >2</div>
<div class="about-3 hide" >3</div>
javascript
<script type="text/javascript">
$('.au-img li').on("click", function(e) {
var $this = $(this),
$id = $this.attr('id'),
$class = '.' + $('.about-' + $id).attr('class').replace('hide', '');
$('.default-text').addClass('hide');
$('.about-' + $id).removeClass('hide');
$('div[class*=about]').not($class).addClass('hide');
});
</script>

duplicate functions, how may I combine them?

I have a function that remains pretty much constant except for the changing class names. I was hoping to make the code a little less text heavy. How may I go about making it just a small function instead of repeating it n times. My concern is also about removing the active class for the last li that was clicked. I've provided only 2 instances here, but this code is repeated n number of times.Any ideas would be much appreciated.
$('a.app1-preview').click(function() {
//remove last active classes
$(".app2").removeClass('active');
$(".app2-preview").removeClass('active');
//Add active class for this
$(this).parent().addClass('active');
$(this).addClass('active');
$('.app-preview-2').fadeOut("slow", function () {
$('.app-preview-1').fadeIn("slow");
});
});
$('a.app2-preview').click(function() {
//remove last active classes
$(".app1").removeClass('active');
$(".app1-preview").removeClass('active');
//Add active class for this
$(this).parent().addClass('active');
$(this).addClass('active');
$('.app-preview-1').fadeOut("slow", function () {
$('.app-preview-2').fadeIn("slow");
});
});
HTML code:
<div class="app-container">
<ul class="apps">
<li class="app1">
<a title href="#" class="app1-preview blocklink">
<span>ANOTHER<br /> APP</span>
</a>
</li>
<li class="app2">
<a title href="#" class="app2-preview blocklink">
<span>SECOND<br /> APP</span>
</a>
</li>
</div>

Try to exploit the fact that you have .active class. ;) Preview - http://jsfiddle.net/evSqF/1/
js:
<script>
$('a.blocklink').click(function() {
var self = $(this);
$('.active').fadeOut('slow', function(){
$(this).removeClass('active');
self.fadeIn('slow');
self.addClass('active');
});
});
</script>
html:
<div class="app-container">
<ul class="apps">
<li class="app1">
<a title href="#" class="app1-preview blocklink">
<span>ANOTHER<br /> APP</span>
</a>
<div class="app-preview active">App1 preview</div>
</li>
<li class="app2">
<a title href="#" class="app2-preview blocklink">
<span>SECOND<br /> APP</span>
</a>
<div class="app-preview">App2 preview</div>
</li>
</ul>
</div>

Edit: After I got some caffeine, I noticed the problems with the setup. I've created a demo at JSFiddle. The markup will display a "header" for an app which will display the child description when clicked on, and hide the descriptions of other sibling's descriptions.
In this case, you can show the current element, and hide the siblings, which would be a cleaner solution as it scales as you at more app elements.
$(".app").click(function() {
var $self = $(this);
var $apps = $self.closest(".apps");
var $selfSiblings = $apps.children(".app").not($self);
$self.addClass(".active");
$self.find(".app-preview").addClass("active");
$selfSiblings.removeClass(".active");
$selfSiblings.find(".app-preview").removeClass("active").fadeOut("slow", function() {
$self.find(".app-preview").fadeIn("slow");
});
});​
I would also recommend rewriting your HTML as such:
<div class="app-container">
<ul class="apps">
<li class="app">
App 1<br />
<a title href="#" class="app-preview blocklink">
<span>PREVIEW 1</span>
</a>
</li>
<li class="app">
App 2<br />
<a title href="#" class="app-preview blocklink">
<span>PREVIEW 2</span>
</a>
</li>
<li class="app">
App 3<br />
<a title href="#" class="app-preview blocklink">
<span>PREVIEW 3</span>
</a>
</li>
</div>​

Write a function to make the functions for you:
function makeHandler(deactivate, fadeOut, fadeIn) {
return function() {
//remove last active classes
$(deactivate).removeClass('active');
//Add active class for this
$(this).parent().addClass('active');
$(this).addClass('active');
$(fadeOut).fadeOut("slow", function () {
$(fadeIn).fadeIn("slow");
});
});
Then:
$('a.app1-preview').click(makeHandler('.app2, .app2-preview', '.app-preview-2', '.app-preview-1'));
$('a.app2-preview').click(makeHandler('.app1, .app1-preview', '.app-preview-1', '.app-preview-2'));
You could probably simplify things further by re-thinking the naming conventions you've got.

I would suggest to define a single function:
function single(index_main, index_aux) {
// Does all your magic
}
$('a.app1-preview').click(function() {
single("1", "2");
});
$('a.app2-preview').click(function() {
single("2", "1");
});
And that does the trick.

I made a jsfiddle example for you. Have a look at it here, it uses as much code that you wrote as possible, so nothing that should surprise you will be there :)
http://jsfiddle.net/2ZPxx/
Basically I ended up with this HTML:
<div class="app-container">
<ul class="apps">
<li class="app1">
<a title href="#" class="app1-preview blocklink" id="app1">
<span>ANOTHER<br /> APP</span>
</a>
</li>
<li class="app2">
<a title href="#" class="app2-preview blocklink" id="app2">
<span>SECOND<br /> APP</span>
</a>
</li>
</div>
<div class="app-preview-app1 app-preview">App1 preview</div>
<div class="app-preview-app2 app-preview">App2 preview</div>
And this javascript:
$('.apps li a').click(function() {
var id = $(this).attr('id');
$('.apps li').removeClass('active');
//Add active class for this
$(this).parent().addClass('active');
$(this).addClass('active');
$('.app-preview').fadeOut("slow", function () {
$('.app-preview-'+id).fadeIn("slow");
});
});