Develop Reference

Slide Toggle on link click, but keep link clickable to page

I have a "dot" navigation on a site that has one link with a submenu. Originally, I had a simple JQ function that would slideToggle() the submenu on hover but that was causing some 'bouncing' issues. So, I reverted it back to click() function.
$("#troy-dot-nav li.menu-item-81 > a").click(function(e){
e.preventDefault();
$(this).siblings('.sub-menu').slideToggle('800');
});
In doing so, I need to add the preventDefault() so the submenu would open up on click, but disable the link.
Turns out, I need to keep the link on that active to navigate to that top-level page, but can't seem to figure out the best way to go about allowing the submenu to open (on click or hover; without bouncing) and keep the menu link active.
HTML for Menu
<div class="menu-primary-container">
<ul id="troy-dot-nav" class="menu reverse-dots">
<li class="...">About</li>
<li class="... menu-item-81">
Integrated Services
<ul class="sub-menu" style="display: none;">
<li class="...">EPC & Project Services</li>
<li class="...">Pipeline Construction</li>
<li class="...">Facility Construction</li>
<li class="...">Integrity Management</li>
</ul>
</li>
<li class="...">Safety & Quality</li>
<li class="...">Careers</li>
<li class="...">Contact Us</li>
</ul>
</div>
The CSS creates the dots on the li:after. Removed extra HTML for cleaner look here.

can't you just use css to add/remove an active class and also close all / open related submenu ?
Like so :
$(document).ready(function() {
$('.link').click(function() {
// Remove the "active" class from all links
$('.link').removeClass('active');
// Add the "active" class to the clicked link
$(this).addClass('active');
// Find the corresponding sublist
var sublistId = $(this).data('sublist');
var sublist = $('#' + sublistId);
// Close all sublists
$('.sublist').hide();
// Open the corresponding sublist
sublist.show();
});
});
with that kind of html :
<ul>
<li>Link 1</li>
<li>Link 2</li>
<li>Link 3</li>
</ul>
<ul id="sublist-1" class="sublist">
<li>Sublist item 1</li>
<li>Sublist item 2</li>
</ul>
<ul id="sublist-2" class="sublist">
<li>Sublist item 3</li>
<li>Sublist item 4</li>
</ul>
<ul id="sublist-3" class="sublist">
<li>Sublist item 5</li>
<li>Sublist item 6</li>
</ul>

Open dropdown on span click

I need to open a submenu, clicking on the parent element. I could do it this way
$(function(){
$('li.dropdown > a').on('click',function(event){
event.preventDefault();
$(this).toggleClass('selected');
$(this).parent().find('ul').first().toggle(300);
$(this).parent().siblings().find('ul').hide(200);
//Hide menu when clicked outside
$(this).parent().find('ul').parent().mouseleave(function(){
var thisUI = $(this);
$('html').click(function(){
thisUI.children(".dropdown-menu").hide();
thisUI.children("a").removeClass('selected');
$('html').unbind('click');
});
});
});
});
But, sometimes I have an actual link as a parent element. And I'd want to go to that link on click. And open the dropdown otherwise. Tried with a click on dropdown:before/ dropdown:after pseudoelements with no luck. And I can't manage to do it adding a span inside dropdown div.
Thank you for any help.
LE: My HTML structure looks like this
<nav id="main-nav">
<ul>
<li>Home</li>
<li class="dropdown">Main Cat
<ul class="dropdown-menu">
<li>Sub Cat1</li>
<li>Sub Cat2</li>
<li>Sub Cat3</li>
</ul>
</li>
<li>Second Cat</li>
</ul>
</nav>

How can I create a drop down menu with JQuery

I found a fiddle that has the functionality I want. However, I'm not sure how to adjust the code (css) to get it to drop down the menu links.
When I click on the = I want the menu to drop down. The original code works by clicking on the parent and showing the child links. I assume it could work for my instance but not sure how.
What I want to accomplish is clicking the = drops Item 1 and Item 2. Otherwise they are hidden.
HTML
<!-- original code -->
<ul id="nav">
<li>Home</li>
<li class="parent">About
<ul class="sub-nav">
<li>Johnny</li>
<li>Julie</li>
<li>Jamie</li>
</ul>
</li>
<li>Contact</li>
</ul>
<!-- my code -->
<div class="header-nav">
<nav class="nav-menu">
<ul>
<li>Item 1</li>
<li>Item 2</li>
</ul>
</nav>
</div>
JS
$(document).ready(function() {
$('.parent').click(function() {
$('.sub-nav').toggleClass('visible');
});
});
// rename the JS to use the id/class for my script
The JSfiddle is here https://jsfiddle.net/cRsZE/982/

You have to update the click event in your jQuery to work for clicking the menu icon. This works:
$(document).ready(function() {
$('#menu-icon').click(function() {
$('.nav-menu ul').toggleClass('visible');
});
});
Edit As requested via the comments, to have the menu appear below the menu icon all you have to do is reposition the menu icon to be above the ul like so:
<div class="header-nav">
<nav class="nav-menu">
<ul>
<li>Item 1</li>
<li>Item 2</li>
</ul>
</nav>
</div>
And working Fiddle

Need To update Code Like That :
$(document).ready(function() {
$('#menu-icon').click(function() {
$('.nav-menu ul').toggleClass('visible');
});
});
For Documentation :https://jqueryui.com/menu/

Cleaned up code a little. Like this?
https://jsfiddle.net/cshanno/cRsZE/990/
$(document).ready(function () {
$('#menu-icon').click(function () {
$('.sub-nav').toggleClass('visible');
});
});

Javascript post filtering system not functioning

I'm trying to create a simple filtering systemt that would hide posts that do not have the same id as the li's under the navig class. To achieve this I am looping through all .article li's and checking what's their id.
Example:
click on li with id="health"
Article 2 disappears
Thank you!
HTML:
<ul class="navig">
<li id="health">Health</li>
<li id="ASD">ASD</li>
</ul>
<br>
<ul class="article">
<li id="health">Article 1</li> <br>
<li id="ASD">Article 2</li> <br>
<li id="health">Article 3</li>
</ul>
Javascript:
$('.navig li').onclick(function () {
$id = this.id;
$('.article li').each(function() {
if ($id != this.id) {
$('.article li').hide();
}
});
});

The fundamental problem is your HTML is invalid. You can't use the same id value on more than one element. Separately, you've used onclick where you would want to use click.
I'd probably use a data-article-id attribute on the navigation li instead, like this:
For example: Live copy (source)
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<meta charset="utf-8">
<title>Testing</title>
</head>
<body>
<ul class="navig">
<li data-article-id="health">Health</li>
<li data-article-id="ASD">ASD</li>
</ul>
<br>
<ul class="article">
<li id="health">Health Article</li>
<li id="ASD">ASD Article</li>
</ul>
<script>
$('.navig li').click(function () {
var articleId = $(this).attr("data-article-id");
alert(articleId);
var articles = $(".article li");
articles.not("#" + articleId).hide();
$("#" + articleId).show();
});
</script>
</body>
</html>
You'll want to do something to hide the articles (or show a default one) when the page loads, etc.; I'll leave that as an exercise for you. :-)
Side note: br elements cannot be children of ul elements, I've removed the ones from the articles list.

$('.navig li').onclick(function () { <-- not valid jquery
There is no onclick method in jQuery...there is .click(function(){}) or on("click", function(){})
second porblem, ids need to be singular. They can not be repeated. Use a data attribute [and br's can not be children of ul]
<ul class="navig">
<li id="health">Health</li>
<li id="ASD">ASD</li>
</ul>
<br>
<ul class="article">
<li data-id="health">Article 1</li>
<li data-id="ASD">Article 2</li>
<li data-id="health">Article 3</li>
</ul>
and script
$('.navig li').on("click", function() {
var id = this.id;
$(".article li").hide().filter('[data-id="' + id + '"]').show();
});
JSFiddle: http://jsfiddle.net/q8SCF/

How to add a class to an element using jQuery and javascript?

I have the HTML code as given below to add the navigation to my site. (Note that the list is nested)
<div id="navigation">
<ul>
<li>Home</li>
<li>About us</li>
<li>Help</li>
<li>DropDown
<ul>
<li>Link 1</li>
<li>Link 2</li>
<li>Link 3</li>
</ul>
</li>
<li class="last">A Last Link Text</li>
</ul>
</div>
I want to show the currently active page link in new color. So the corresponding list item should have the class active and I use the CSS to change the color. For example, if the default.html is the currently opened page, the code should be <li class=“active”>Home</li>.
How to do that in jQuery and JavaScript (I need both for two different websites).
Can anyone help me?
Thanks for your help.

Get your URL / Parse it:
var pathname = window.location.pathname;
Then add the class:
Jquery:
$(element).addClass('classname');
JS: How do I add a class to a given element?

Try this
$(document).ready(function () {
var url = location.href;
$('#navigation li a').each(function () {
var thisHref = this.getAttribute('href');
if (thisHref !== '#' && url.indexOf(thisHref) !== -1) {
$(this.parentNode).addClass('active');
return;
}
});
});