Develop Reference

How to extract specific text from a html tag that is dynamically placed in the code

I want to extract a specific text which is located between the <li></li> tags in the navigation bar of a html page, but the code's not consistent. The order of the navbar elements changes depending on the conditions that I'm unable to predict. The only thing that doesn't change in the code is the <li></li> tags where the text I want to extract is embedded.
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li class="active">Homepage</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">Menu - 1<span class="caret"></span></a>
<ul class="dropdown-menu">
<li>Menu - 1 - Option - 1</li>
<li>Menu - 1 - Option - 1</li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">Menu - 2<span class="caret"></span></a>
<ul class="dropdown-menu">
<li>Menu - 2 - Option - 1</li>
<li>Menu - 2 - Option - 2</li>
<li role="separator" class="divider"></li>
<li>Menu - 2 - Option - 3</li>
<li>Menu - 2 - Option - 4</li>
</ul>
</li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">Menu - 3<span class="caret"></span></a>
<ul class="dropdown-menu">
<li>Menu - 3 - Option - 1</li>
<li>Menu - 3 - Option - 2</li>
</ul>
</li>
<!-- The element I need to access -->
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">
------->[TEXT I WANT TO EXTRACT]<-------
<span class="caret"></span>
</a>
<ul class="dropdown-menu">
<li>My Account</li>
<li role="separator" class="divider"></li>
<li class="dropdown-header">Help</li>
<li>Contact Us</li>
<li>Logout</li>
</ul>
</li>
<!-- The element I need to access -->
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">Menu - 5<span class="caret"></span></a>
<ul class="dropdown-menu">
<li>Menu - 5 - Option - 1</li>
<li>Menu - 5 - Option - 2</li>
<li>Menu - 5 - Option - 3</li>
</ul>
</li>
</ul>
</div>
So, the following <li></li> tags of the code never changes, but its placement in the navbar changes:
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true"
aria-expanded="false">
------->[TEXT I WANT TO EXTRACT]<-------
<span class="caret"></span>
</a>
<ul class="dropdown-menu">
<li>My Account</li>
<li role="separator" class="divider"></li>
<li class="dropdown-header">Help</li>
<li>Contact Us</li>
<li>Logout</li>
</ul>
</li>
When I try to extract the text using querySelector from JavaScript, it sometimes doesn't work because the <li></li> element is no longer the fifth one in the list. Thus, the selector doesn't match:
document.querySelector('li.dropdown:nth-child(5) > a:nth-child(1)');
What would be the safest way for me to extract this text?

Maybe you can give a class to the li that you want to extract and then select that class using querySelector.
Here I am assuming you want to select the logout list element.
------->[TEXT I WANT TO EXTRACT]<-------
<span class="caret"></span>
</a>
<ul class="dropdown-menu">
<li>My Account</li>
<li role="separator" class="divider"></li>
<li class="dropdown-header">Help</li>
<li>Contact Us</li>
<li class="logout">Logout</li> //Here I have given a class 'logout'
</ul>
</li>
Select that li element using querySelector
let text = document.querySelector('.logout').innerText;

Using the filter method to find the right element is the solution to my issue. I just check whether the children of the specified tags contain a particular text that the element I want to access has. Then, I simply extract the text like the following:
// Retrieve all children inside of the navbar
Array.from(document.querySelectorAll(".nav > li.dropdown"))
// Filter the child that contains the text
.filter((el) => el.textContent.includes("Logout"))[0]
// Extract the text from the child tag
.querySelector("a").textContent.trim();

Add class to element when clicked elsewhere + condition on class presence

I'm having a sliding menu with sub-menus. I'm trying to hide an element in the navigation row when a user clicks one of the parent menu item that has a sub-menu (clicks on the expand arrow) + I want to show back the hidden element when the users clicks back to the top-level menu.
My menu's <ul> element get's a class of slide-menu-is-active-parent when any of the sub-menus is open.
This is a simple version of my row html:
<div class="navigation row">
<nav>
<ul id="nav-menu">
<li>Menu item 1</li>
<span class="submenu-button">
<ul class="sub-menu">
<li>Sub-menu item 1</li>
<li>Sub-menu item 2</li>
<li>Sub-menu item 3</li>
</ul>
</li>
<li>Menu item 2</li>
<span class="submenu-button">
<ul class="sub-menu">
<li>Sub-menu item 1</li>
<li>Sub-menu item 2</li>
<li>Sub-menu item 3</li>
</ul>
</li>
</ul>
</nav>
</div>
<div class="content-row">
[whatever content...]
</div>
I tried the following script to add a class od menu-open to the some-content element when both conditions are met: the user clicks on the sub-menu button and when the <ul id="nav-menu"> element get's the slide-menu-is-active-parent class when opened. And with the class added to my content row, I could use simple .content-row.menu-open{display:none} to hide it.
function($) {
$("#nav-menu .submenu-button").click(function(){
if ($('#nav-menu').hasClass('slide-menu-is-active-parent')) {
$('.content-row').addClass('menu-open');
} else {
$('.content-row').removeClass('menu-open');
}
});
});
But that doesn't work. Any tips on where my script is lacking?

To be honest, your code works: just add the slide-menu-is-active-parent class to the #nav-menu, and the content-row shows up on click. Still, I would do this differently - even if using jQuery. Here's a simplistic solution:
jQuery(document).ready(function($) {
// this click handler opens the sub-menu
$(".menu-item").on('click', function() {
$(this).find(".sub-menu").toggle()
})
// this click handler toggles the content-row
$(".sub-menu > li").on('click', function(e) {
// stopPropagation prevents the click event
// to bubble up to the menu-item parent
e.stopPropagation()
$(".content-row").toggle()
})
})
.d-none {
display: none;
}
.menu-item,
.sub-menu>li {
cursor: pointer;
}
.content-row {}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="navigation row">
<nav>
<ul id="nav-menu">
<li class="menu-item">Menu item 1
<ul class="sub-menu d-none">
<li>Sub-menu item 1</li>
<li>Sub-menu item 2</li>
<li>Sub-menu item 3</li>
</ul>
</li>
<li class="menu-item">Menu item 2
<ul class="sub-menu d-none">
<li>Sub-menu item 1</li>
<li>Sub-menu item 2</li>
<li>Sub-menu item 3</li>
</ul>
</li>
</ul>
</nav>
</div>
<div class="content-row d-none">
[whatever content...]
</div>

You need to use $(this) to refer to the element you clicked.
You also need to find parent with class, so you can use parents() with the name of your class.
NOTE : if i solved your problem, please next time do effort to make your question more clear, it will be better for everyone :)
$("#nav-menu .submenu-button").click(function(){
if ($(this).parents('#nav-menu').hasClass('slide-menu-is-active-parent')) {
$('.content-row').addClass('menu-open');
} else {
$('.content-row').removeClass('menu-open');
}
});
.content-row { display:none }
.menu-open { display:block }
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="navigation row">
<nav>
<ul id="nav-menu" class="slide-menu-is-active-parent">
<li>Menu item 1</li>
<span class="submenu-button">Button</span>
<ul class="sub-menu">
<li>Sub-menu item 1</li>
<li>Sub-menu item 2</li>
<li>Sub-menu item 3</li>
</ul>
<li>Menu item 2</li>
<span class="submenu-button">Button</span>
<ul class="sub-menu">
<li>Sub-menu item 1</li>
<li>Sub-menu item 2</li>
<li>Sub-menu item 3</li>
</ul>
</ul>
</nav>
</div>
<div class="content-row">
[whatever content...]
</div>

Bootstrap 3 removing active class when hovering over another menu item

I have a side dropdown menu that has three links with submenu items. When I am on one of those sub pages, i add a 'hover' class to the parent ul making it stay open. The problem is, when I hover over another menu link, that submenu still stays open, ultimately blocking the other submenu. How can I remove the hover class to the current link when i hover over another menu item and add it again if i hover out of it?
This is the code I tried to no avail
$(function(){
$(".dropdown-submenu.hover").toggleClass("active",true);
});
$(function(){
$(".dropdown-submenu").on("hover",function(e) {
if($(e.currentTarget).hasClass("active"))
$(e.currentTarget).toggleClass("active",false);
else
$(e.currentTarget).toggleClass("active",true);
e.preventDefault();
return false;
});
$(".dropdown-submenu").on("hide.bs.dropdown", doNothing);
$(".dropdown-submenu").on("show.bs.dropdown", doNothing);
function doNothing() {
e.preventDefault();
return false;
}
});
This is the html
<div class="hidden-xs dropdown col-sm-2 " id="sidebar" role="navigation">
<button id="mainnav" class="btn-block mainmenu mainnav dropdown-toggle" data-toggle="dropdown" data-autohide="false">Menu</button>
<ul id="mainsubnav" class="nav dropdown-menu mainsubnav" role="menu" aria-labelledby="dropdownMenu">
<li class="dropdown-submenu">Has Submenu 1
<ul class="dropdown-menu">
<li>Sublink 1</li>
<li>Sublink 1</li>
<li>Sublink 1</li>
</ul>
</li>
<li class="dropdown-submenu">Has Submenu 2
<ul class="dropdown-menu">
<li><a class="active" href="link1.php">Sublink 2</a></li>
<li>Sublink 2</li>
<li>Sublink 2</li>
</ul>
</li>
<li class="dropdown-submenu">Has Submenu 3
<ul class="dropdown-menu">
<li>Sublink 3</li>
<li>Sublink 3</li>
<li>Sublink 3</li>
</ul>
</li>
<li>Link</li>
<li>Link</li>
<li>Link</li>
<li>Link</li>
</ul>
</div><!--/#sidebar-->
</div>
and this is the code that adds the hover class
$('ul.dropdown-menu > li > a.active:first').closest('li.dropdown-submenu').addClass('hover');
$('ul.dropdown-menu > li > a.active:first').closest('li.dropdown- submenu').children('a').addClass('active');
here is the example
http://www.bootply.com/hXsG8vzeDj

Twitter Bootstrap multiple dropdowns on click - jQuery assistance

I need a little assistance in modifying the javascript that controlls bootstrap dropdowns.
What i need to happen is when you click on a dropdown, it shows. On the top level that works fine, but if i want to go into a dropdown within a drop down
Example:
<ul>
<li>Dropdown 1
<ul>
<li>Dropdown 2
<ul>
<li>List Item</li>
<li>List Item</li>
</ul>
</li>
</ul>
</li>
</ul>
When i click on dropdown 1, I can see the list item called dropdown 2 but when i click on it, it closes the whole list item again. When you click on dropdown 2 i need it to show up.
I found a hover method to open the second nested dropdown but i need it to show on click.
And help is much appreciated. Here is a fiddle: http://jsfiddle.net/raDUC/1/

try this:
HTML:
<div class="navbar navbar-fixed-top span2">
<div class="navbar-inner"> <a class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse"></a> <a class="brand" href="#">Project Name</a>
<div class="nav-collapse">
<ul class="nav">
<li class="dropdown">
Dropdown 1
<ul class="dropdown-menu">
<li class="dropdown dropdown-nested"> Dropdown 2
<ul class="dropdown-menu">
<li>Living and Nonliving things</li>
</ul>
</li>
<li> Another action
</li>
</ul>
</li>
<li> Link
</li>
<li> Link
</li>
<li> Link
</li>
<li class="dropdown"> Dropdown
<ul class="dropdown-menu">
<li> Action
</li>
<li> Another action
</li>
</ul>
</li>
</ul>
</div>
<!-- /.nav-collapse -->
</div>
<!-- /.navbar-inner -->
</div>
<!-- /.navbar -->
JS:
$(function(){
$('.dropdown-nested').click(function(event){
event.stopPropagation();
var dropdown = $(this).children('.dropdown-menu');
dropdown.toggle();
});
});
Side Note...
I recommend adding the following css to your nav menus in bootstrap:
ul.nav a {
outline: none;
}
it keeps that ugly blue outline from showing up if you click on a main menu item to close it.

Expand menu, show submenu

I'm trying to create an "expandable" menu. So, if a user clicks on option A two suboptions should show up. I'm trying to do something like this but in a menu...
This is my code so far...
<li>
<i class="icon-picture icon-white"></i> Galleries
<div class="nav-collapse88">
<ul>
<li>
<i class="icon-play"></i> Add
</li>
<li>
<i class="icon-play"></i> Delete
</li>
</ul>
</div>
</li>
So when I click on galleries the options Add and Delete should appear. Any suggestions?

I would nest ul's like so:
<ul>
<li>
<a class="expand">Link used to expand</a>
<ul>
<li>Sub Menu Item</li>
<li>Sub Menu Item</li>
<li>Sub Menu Item</li>
</ul>
</li>
</ul>
The I would use this jquery:
$(document).on('click', 'a.expand', function(e) {
e.preventDefault();
$(this).siblings('ul').slideToggle();
});
You would need to set the sub menu CSS to display none.
Something along these lines should do the trick.

This works:
<ul>
<li class="dropdown">
Support
<ul class="dropdown-menu" role="menu">
<li><i class="icon-play"></i> Add</li>
<li><i class="icon-play"></i> Delete</li>
</ul>
</li>
</ul>

I believe you want the class to be dropdown not collapse. That's how the bootstrap documentation recommends it for menus.
Change the class to be dropdown, remove the inner div, and add the class dropdown-menu the inner ul.
<li class="dropdown">
<i class="icon-picture icon-white"></i>>Galleries
<ul class="dropdown-menu">
<li>
<i class="icon-play"></i> Add
</li>
<li>
<i class="icon-play"></i> Delete
</li>
</ul>
</li>

tyy this http://jsfiddle.net/68RXP/213/
$(function(){
$(".nav-collapse88").hide();
$("a").click(function(e){
e.preventDefault();
$(".nav-collapse88", $(this).parent()).slideToggle();
});
})​
<li>
<a href="?op=1">
<i class="icon-picture icon-white"></i> Galleries</a>
<div class="nav-collapse88">
<ul>
<li>
<i class="icon-play"></i> Add
</li>
<li>
<i class="icon-play"></i> Delete
</li>
</ul>
</div>
</li>​