Develop Reference

Javascript code for Bootstrap Sidebar menu not working

I have a Sidebar / Menu that I am working with. It has been created with Bootstrap, DJango, and Javascript.
Basically, I am trying to write Javascript so that when on clicks on a menu-item, the background changes color (dark blue), the icon change color (light green / turquoise) and it gets a type of "wedge"
Below is an example of a menu-item that has been chosen (Dashboard) along with menu-items that have not been chosen (Security and Messages). The "wedge" has a red arrow pointing to it.
Here is the HTML code that is being used:
[... snip ...]
<div class="page-container">
<div class="page-sidebar-wrapper">
<div class="page-sidebar navbar-collapse collapse">
<ul class="page-sidebar-menu page-header-fixed page-sidebar-menu-hover-submenu "
data-keep-expanded="false" data-auto-scroll="true" data-slide-speed="200">
<li class="nav-item start active open">
<a href="{% url 'mainadmin:dashboard' %}" class="nav-link nav-toggle">
<i class="fa fa-tachometer"></i>
<span class="title">Dashboard</span>
<span class="selected"></span>
<span class="arrow open"></span>
</a>
</li>
<li class="nav-item ">
<a href="{% url 'mainadmin:security' %}" class="nav-link nav-toggle">
<i class="fa fa-users"></i>
<span class="title">Security</span>
<span class="arrow"></span>
</a>
</li>
<li class="nav-item ">
<a href="{% url 'mainadmin:in_progress' %}" class="nav-link nav-toggle">
<i class="fa fa-comment"></i>
<span class="title">Messages</span>
<span class="arrow"></span>
</a>
<ul class="sub-menu">
<li class="nav-item ">
<a href="{% url 'mainadmin:in_progress' %}" class="nav-link ">
<span class="title">List All Messages</span>
</a>
</li>
<li class="nav-item ">
<a href="{% url 'mainadmin:in_progress' %}" class="nav-link ">
<span class="title">List My Messages</span>
<span class="badge badge-danger"></span>
</a>
</li>
</ul>
</li>
[... snip ...]
Here is the Javascript code:
<script>
$(document).ready(function () {
$('.nav-item a').click(function(e) {
$('.nav-item a').removeClass('selected');
$('.nav-item a').removeClass('arrow');
$('.nav-item a').removeClass('open');
$('.nav-item a').removeClass('active');
alert("I have gotten in");
var $parent = $(this).parent();
$parent.addClass('selected');
$parent.addClass('arrow');
$parent.addClass('open');
$parent.addClass('active');
e.preventDefault();
});
});
</script>
I do get the alert message - but - what happens is :
-> the background of the chosen menu-item does change color - which is correct
--> The icon of the chosen menu-item changes color (to light blue / turquoise) - which is correct
-> the tick of the arrow does not take place for the chosen menu-item :(
-> the old chosen menu item does not "de-select"
What am I doing wrong?
TIA
Hi #Joe Lissner
Thanks so much for the response!
I had to add the following to get the "wedge" portion to work. It required span tags
// REFERENCE: https://stackoverflow.com/questions/2013710/add-span-tag-within-anchor-in-jquery
$(this).append('<span class="selected"></span>');
$(this).append('<span class="arrow open"></span>');
While this works when clicking on the main-menu item, I'm not so lucky when it comes to clicking on sub-menu items. As of now, I am pretty much new to Javascript.
How would one get the sub-menu items to work?
Also, when clicking on an item, it does not go to the page specified in "href="
How would can one make changes to the code so that when the menu-item is clicked, it would go to the page specified in "href="
Again, thanks for the response :-)

You are removing the classes from the a tags, not the .nav-item elements.
Try this:
$(document).ready(function () {
$('.nav-item a').click(function(e) {
e.preventDefault(); // best practice to have this first, if you remove this line then the link will function as expected.
var $parent = $(this).parent();
var $arrow = $parent.find('.arrow');
$('.nav-item').removeClass('selected arrow open active'); // simplified
$('.nav-item .arrow').removeClass('open');
$('.nav-item .selected').detach(); // remove the span that was there before
alert("I have gotten in");
$parent.addClass('open active'); // simplified
$arrow.addClass('open').before('<span class="selected" />')
});
});
Edit - Fixed the issue with the arrow

jQuery: how to select the exact element of the same class?

Not sure I've formulated my question well, hope the details will cover the issues.
So, I'm building an "artificial" full-height slide-like submenu, and I have an empty container there:
<section class="masking_sublevel">
</section>
Further, I have a bunch of ul elements in my HTML that are hidden by default in their containing section:
I'm updating the HTML part with a more complete piece:
<div id="sldbr_overlay" class="newully">
<section class="masking_sublevel">
</section>
<ul class="sidebar_bumenu">
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
Beauty <i class="fa fa-chevron-right bu_chevright"></i>
<i class="fa fa-chevron-down bu_chevdown"></i>
</a>
<section class="hidden_ul">
<ul>
<li>Aerobics</li>
<li>Pilates</li>
<li>Yoga</li>
<li>Massage</li>
<li>Peeling</li>
<li>Bikini Area Sugaring</li>
<li>Piercing</li>
<li>Tattoo</li>
<li>Shaping</li>
<li>Sauna</li>
<li>Mud SPA</li>
<li>Needle Therapy</li>
<li>Shaping</li>
<li>Leech Therapy</li>
<li>Thai Massage</li>
<li>Wushu</li>
</ul>
</section>
</li>
<li>Clothing</li>
<li>Computers</li>
<li>Construction</li>
<li>Entertainment</li>
<li>Financial</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">
Food <i class="fa fa-chevron-right bu_chevright"></i>
<i class="fa fa-chevron-down bu_chevdown"></i>
</a>
<ul class="hidden_ul">
<li>Pizza</li>
<li>Cheboorackee</li>
<li>Khash</li>
<li>Pork</li>
<li>Hamburgers</li>
<li>Greek Salad</li>
<li>BBQ</li>
<li>Tortillas</li>
<li>Spaghetti</li>
<li>Pasta</li>
<li>Ice Cream</li>
<li>Jelly Sugar</li>
<li>Lolly Pop</li>
<li>Cupcakes</li>
</ul>
</li>
<li>Health</li>
<li>Kids</li>
<li>Services</li>
<li>Travel</li>
<li>Tourism</li>
</ul>
<div class="pzik">
<a href="javascript:void(0);" data-toggle=".sidebar_wrapper" id="sidebar-toggle_abs">
<img src="svg/filter.svg" class="filter_icon hvr-wobble-bottom">
</a>
<a href="javascript:void(0);" id="go-2-top" class="gotop_chevron">
<i class="fa fa-chevron-up"></i>
</a>
</div>
</div>
So, what I'm doing is selecting the above mentioned ul and put it within the empty section on a hover event and emptying it on a mouseleave, like this:
$(document).ready(function(){
var dropdownLi = $('li.dropdown');
var maskingSubLvl = $('.masking_sublevel');
var importedUl = $('.masking_sublevel ul');
var hiddenUl = $('.hidden_ul ul');
$(dropdownLi).on('mouseover',function(){
$(hiddenUl).appendTo(maskingSubLvl);
$(maskingSubLvl).css('display','block');
});
$(dropdownLi).on('mouseleave',function(){
$(maskingSubLvl).css('display','none');
$(importedUl).empty();
$(maskingSubLvl).on('mouseenter',function(){
$(this).css('display', 'block');
});
});
});
The problem is that with this piece of code I probably select just the first ul with the class of .hidden_ul', since as I hover on the other items (randomly), it keeps on loading the content of the first list. How can I select the VERY ul element with the same class that I'm currently hovering?
Thanks!

So you want to traverse from the element that has mouseover to the parent ul, which is a child of the grand-parent .hidden_ul
// remove this, it has no context to each drop down
// var hiddenUl = $('.hidden_ul ul');
$(dropdownLi).on('mouseover',function(){
$(this).closest('.hidden_ul').children('ul').appendTo(maskingSubLvl);
// though if there are no child uls in your lis, this will do
$(this).closest('ul').appendTo(maskingSubLvl);

Since your hidden_ul is direct child of .dropdown you need to get it using its parent context as below:
$(dropdownLi).on('mouseover',function(){
var hiddenUl=$(this).find('.hidden_ul')[0];//find the child
$(hiddenUl).appendTo(maskingSubLvl);
$(maskingSubLvl).css('display','block');
});
Update
Instead of appendTo try keeping changing the html of .maskingSubLvl so that no need to remove the content again before appending another. For Ex:
DEMO
$(document).ready(function(){
var dropdownLi = $('li.dropdown');
var maskingSubLvl = $('.masking_sublevel');
var importedUl = $('.masking_sublevel ul');
$(dropdownLi).on('mouseover',function(){
$(maskingSubLvl).css('display','block');
var hiddenUl = $(this).find('.hidden_ul ul').clone(); //clone the content
$(maskingSubLvl).html(hiddenUl);
});
$(dropdownLi).on('mouseleave',function(){
$(maskingSubLvl).css('display','none');
});
$(maskingSubLvl).on('mouseenter',function(){
$(this).css('display', 'block');
});
});

How to stop a page from jumping to the top after clicking link

I have a filter and when you try to change the level of experience the page goes to the very top. my code looks like this:
Visual: http://imgur.com/OkSbAaB
<ul class="SecondNavigation">
<li>
<nav class="CategoriesNaviation">
<h3>Experience Filter</h3>
<ul>
<li>
<a href="/">
<i class="fa fa-list fa-fw fa-2x"></i>
<span>No Filter</span>
</a>
</li>
<li class="Selected">
<a href="/Beginner/">
<i class="fa fa-list fa-fw fa-2x"></i>
<span>Beginner</span>
</a>
</li>
<li>
<a href="/Intermediate/">
<i class="fa fa-list fa-fw fa-2x"></i>
<span>Intermediate</span>
</a>
</li>
<li>
<a href="/Advance/">
<i class="fa fa-list fa-fw fa-2x"></i>
<span>Advance</span>
</a>
</li>
</ul>
</nav>
</li>
Question: Is there a way to disable the page from moving to the top after the user clicks on the anchor?

You can use:
Event.preventDefault(), or
return false
Both will have the effect of prevent the default behavior of internal anchor links from navigating to the top of the page. Example usage, as has been demonstrated on SO before:
var links = document.querySelectorAll("a"),
pd = function(e) {
e.preventDefault ? e.preventDefault() : e.returnValue = false;
};
links.addEventListener('click', pd, false);
If you're using jQuery, you can do it like this:
var links = $('a');
links.click(function(e) {
e.preventDefault(); // Can be used anywhere
});
Important to note that if you choose to use return false, it has to be on the last line in the function, otherwise it will stop all downstream code from being executed:
var links = $('a');
links.click(function() {
// Your code here
// ...
return false; // Must be on the last line
});
Perhaps some bedtime reading?
The difference between ‘return false;’ and ‘e.preventDefault();’
When and why to 'return false' in javascript?

how to get id of next element jquery?

here the html code, and i want to get the id of next element from clicked element a with class coba or to get id of element table class coba2.
<div class="dropdown">
<label>Kategori</label>
<button class="btn btn-default dropdown-toggle" type="button" id="jenis_kues" data-toggle="dropdown">Tambah Pertanyaan
<span class="caret"></span>
</button>
<ul class="dropdown-menu" role="menu" aria-labelledby="jenis_kues">
<li role="presentation">
<a class="coba" id="teks" role="menuitem" tabindex="-1" href="#" onclick="tambah_kues_teks()">Teks</a>
</li>
</ul>
</div>
<table class="coba2" id="kues_teks-'+i+'">
</table></div>
and i've tried using this script
var a = $('.coba').next('.coba2'); alert(a.attr('id'));
but it show me undefined, anyone know how?

You need to travel up the DOM tree, until you are on the same level as .coba2:
var id = $('.coba').closest('.dropdown').next('.coba2').attr('id');
alert( id );

you should use
var a = $('.coba').parents('.dropdown').next('.coba2'); alert(a.attr('id'));

Selecting Closest Match using jQuery

I am having trouble selecting the closest match. I already tried .closest, .next, and .nextall; I also tried using (this), but I think I'm using them incorrectly.
Here's what I want to acheive:
When .show is clicked, the closest .list-content will toggle and the closest toggleClass icon-rotate-180 too.
<ul class="list-unstyled">
<li class="list-menu">
<a href="javascript:void(0);" class="show">
Date of Operations
<i class="icon-chevron-down pull-right"></i>
</a>
</li>
<li class="list-content">Hidden Content until Clicked</li>
<li class="list-menu">
<a href="javascript:void(0);" class="show">
Date of Operations
<i class="icon-chevron-down pull-right"></i>
</a>
</li>
<li class="list-content">Hidden Content until Clicked</li>
</ul>
<script>
$(document).ready(function() {
$(".list-content").hide();
$(".show").click(function() {
$(".icon-chevron-down").toggleClass("icon-rotate-180");
$(".list-content").toggle();
});
});
</script>

Firstly, your HTML is invalid as you cannot have a div element as a direct child of a ul. With that in mind, try this:
<ul class="list-unstyled">
<li class="list-menu">
<a href="#" class="show">
Date of Operations
<i class="icon-chevron-down pull-right"></i>
</a>
<div class="list-content">Hidden Content until Clicked</div>
</li>
<li class="list-menu">
<a href="#" class="show">
Date of Operations
<i class="icon-chevron-down pull-right"></i>
</a>
<div class="list-content">Hidden Content until Clicked</div>
</li>
</ul>
$(".show").click(function(e) {
e.preventDefault();
$(".icon-chevron-down", this).toggleClass("icon-rotate-180");
$(".list-content", $(this).closest('li')).toggle();
});

ul/li is the wrong case here. The second li is in relation to the first li. Please use dl, dd and dt instead - this is not the perfect match but better than ul/li!
a is for links but you dont call a url. Please use the dd itself or a span so you dont need the javascript:void(0); and no e.preventDefault();.
Date of Operations
Hidden Content until Clicked
<dd class="list-menu show">
Date of Operations
<i class="icon-chevron-down pull-right"></i>
</dd>
<dt class="list-content">Hidden Content until Clicked</dt>
$(".show").click(function(e) {
$(this).closest(".icon-chevron-down").toggleClass("icon-rotate-180");
$(this).next("dt.list-content").toggle();
});
(i copied a part of RoyMcCrossan's answer from Selecting Closest Match using jQuery)
Sorry structure broken, looks like a bug in Stackoverflow.