Develop Reference

How to copy part of a tag to another tag?

I want to insert the (ul) tag that comes after the (div) tag in class (copy1).
Then, by clicking on the tag (div) in the class (copy1), insert the (ul) tag after the tag (div) into the class (copy2). The first step is running the code, but I don't know the second step.
$(document).ready(function() {
$('ul ul').hide();
$('ul div').click(function() {
var x = $(this).next().html();
$('.copy1').html(x);
})
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<ul>
<li>
<div>01</div>
<ul>
<li>01-01</li>
<li>
<div>01-02</div>
<ul>
<li>01-02-01</li>
<li>01-02-02</li>
<li>01-02-03</li>
</ul>
</li>
<li>01-03</li>
</ul>
</li>
<li>
<div>02</div>
<ul>
<li>02-01</li>
<li>02-02</li>
<li>02-03</li>
</ul>
</li>
</ul>
<hr>
<ul class="copy1"></ul>
<ul class="copy2"></ul>
After clicking on the first div tag, the following values are inserted into the copy1 class.
01-01
01-02
01-03
But by clicking on 01-02 the following values
01-02-01
01-02-02
01-02-03
Those that are in the copy1 class are not copied to the Copy2 class.

Because the elements in .copy1 are created dynamically, you either need to add events after they are created or use event delegation
$(document).on("click", ".copy1 div", function() { ...
as you want copy1->copy2, it needs to be separate from the src->copy1 code (or have additional logic within the click handler).
In the snippet below, I've kept them separate for clarity. I've also added some css to show which ones can be clicked as it was slightly confusing that 01-01 does nothing as there are no child nodes.
$(document).ready(function() {
$('ul ul').hide();
$('ul div').click(function() {
var x = $(this).next().html();
$('.copy1').html(x);
})
$(document).on("click", ".copy1 div", function() {
var x = $(this).next().html();
$('.copy2').html(x);
});
});
ul div { color: red }
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<ul>
<li>
<div>01</div>
<ul>
<li>01-01</li>
<li>
<div>01-02</div>
<ul>
<li>01-02-01</li>
<li>01-02-02</li>
<li>01-02-03</li>
</ul>
</li>
<li>01-03</li>
</ul>
</li>
<li>
<div>02</div>
<ul>
<li>02-01</li>
<li>02-02</li>
<li>02-03</li>
</ul>
</li>
</ul>
<hr>
<ul class="copy1"></ul>
<ul class="copy2"></ul>

how to get text inside a li element on click in pure javascript

The folliwing code is working ONLY with the getElementById method, but i need it to works even in the case there is not an ID on element.
My HTML is:
<div id="container">
<ul class="menu">
<li>
<ul class="submenu">
<li>text i have to get</li>
</ul>
</li>
</ul>
</div>
My JS is:
<script>
var el = document.getElementById("pid");
el.onclick = function what_to_do(){
var theText = this.innerHTML;
alert(theText);
</script>
So i need to get the text in the deepest nested LI element that has no ID when the user clicks over it.
usually with jquery i can make $("#container ul li ul li").on("click, ...
but i am trying to work with pure javascript (vanilla js).
Is there anyone else that can help me?
Thanks in advance

You can use document.querySelectorAll().
Note: You can't just set event to the document.querySelectorAll() like jQuery you need to loops through whole array
const items = document.querySelectorAll('li > ul > li');
items.forEach(item => {
item.addEventListener('click',(e)=>{
console.log(e.target.textContent);
}
)
})
<div id="container">
<ul class="menu">
<li>
<ul class="submenu">
<li>text i have to get</li>
</ul>
</li>
</ul>
</div>

use document.querySelector
var el = document.querySelector("#container > .menu > li > .submenu > li");
el.onclick = function what_to_do(){
var theText = this.innerHTML;
alert(theText);
}
<div id="container">
<ul class="menu">
<li>
<ul class="submenu">
<li>text i have to get</li>
</ul>
</li>
</ul>
</div>

How to hide parent <li> if all the children are hidden in jquery

I am new in Jquery
My Webpage structure is like this
<div id="MenuSection">
<ul>
<li>Master // Main Menu
<ul>
<li>Master1</li>
<li>Master2</li>
<li>Master3</li>
</ul>
</li>
<li>Transaction // Main Menu
<ul>
<li>Transaction1</li>
<li>Transaction2</li>
<li>Transaction3</li>
</ul>
</li>
<li>Report // Main Menu
<ul>
<li>Report1</li>
<li>Report2</li>
<li>Report3</li>
</ul>
</li>
</ul>
</div>
I want that when all the children of any Parent(main menu) are hidden, Parent should also be hidden. Let's say if Report1, Report2, Report3 are hidden then Parent that is "Report" should also be hidden.
How can I achieve this through Jquery ?

One way is to iterate over each main menu li to see if its children are all :visible:
$("#MenuSection>ul>li").each(function() {
if ($(this).find(">ul>li:visible").length == 0) {
$(this).hide();
}
});
there are other ways to do this, such as using .filter or .map, but this should get you what you need.
Given the nested ul's the above uses > to ensure only the directly ul>li children are processed. If you have multiple levels, you might need to change accordingly, eg for the first: #MenuSection li would apply to all lis and the second .find(">ul>li:visible") only looks at direct li children.
$("#MenuSection>ul>li").each(function() {
if ($(this).find("li:visible").length == 0) {
$(this).hide();
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="MenuSection">
<ul>
<li>Master
<ul>
<li>Master1</li>
<li>Master2</li>
<li>Master3</li>
</ul>
</li>
<li>Transaction
<ul>
<li>Transaction1</li>
<li>Transaction2</li>
<li>Transaction3</li>
</ul>
</li>
<li>Report
<ul>
<li style='display:none'>Report1</li>
<li style='display:none'>Report2</li>
<li style='display:none'>Report3</li>
</ul>
</li>
</ul>
</div>

JavaScript does it fairly easy. You would need expand on this to execute this check every on the relevant list every time you hide or show a list item.
function isHidden(array) {
for(var i = 0; i < array.length - 1; i++) {
if(array[i+1].style.display != "none") {
return false;
};
};
return true;
};
var children = document.getElementById("report").getElementsByTagName("LI");
if (isHidden(children)) {
document.getElementById("report").style.display = "none";
};

You can use the the .is(':visible')
See the code:
(function($) {
$(document).ready(function() {
var $mainLinks = $('#MenuSection > ul > li');
$.each($mainLinks, function() {
if (!$(this).find('li').is(':visible')) {
$(this).hide();
}
});
});
})(jQuery);
#MenuSection > ul > li:last-child li {
display: none;
}
#MenuSection > ul > li:first-child li:first-child {
display: none;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div id="MenuSection">
<ul>
<li>Master // Main Menu
<ul>
<li>Master1</li>
<li>Master2</li>
<li>Master3</li>
</ul>
</li>
<li>Transaction // Main Menu
<ul>
<li>Transaction1</li>
<li>Transaction2</li>
<li>Transaction3</li>
</ul>
</li>
<li>Report // Main Menu
<ul>
<li>Report1</li>
<li>Report2</li>
<li>Report3</li>
</ul>
</li>
</ul>
</div>

jQuery - using the same function (ToggleNav/Dropdown) on multiple ID's

I'm trying to make multiple dropdown menu's on my website and I am using this jQuery for this:
$(function() {
var pull = $('#pull');
menu = $('#nav');
menuHeight = menu.height();
$(pull).on('click', function(e) {
e.preventDefault();
menu.slideToggle();
});
});
Here's the html part:
<nav class="container">
<a href="#" id="pull" style="display:block;">
<h3>Menu</h3>
</a>
<ul id="nav" style="display:none;">
<li>Pizza</li>
<li>Pasta</li>
<li>Burger</li>
<li>Specials</li>
<li>Drinks</li>
</ul>
</nav>
It works wonderful if I only have one drop down menu but as soon as I add another one, only one of them (doesn't matter if it's two, three or more then) is actually dropping down.
I gave every Menu it's own ID and copied the code every time and replaced the ID's but this doesn't work.
Already looked into this (using the same function of different events ) or this (Jquery - use the same function for multiple requests) and other threads but i can't figure out how to apply this on my code...
Here's my Jsfiddle on what I'm trying to do: https://jsfiddle.net/thwdyccr/2/

Use classes instead of ids, and then you can make the same code work for all cases (fiddle):
$(function () {
var pull = $('.pull');
$(pull).on('click', function (e) {
e.preventDefault();
var menu = $(this).next();
menu.slideToggle();
});
});
<nav class="container"> <a href="#" class="pull" style="display:block;">
<h3>Menu1</h3>
</a>
<ul class="nav" style="display:none;">
<li>Pizza
</li>
<li>Pasta
</li>
<li>Burger
</li>
<li>Specials
</li>
<li>Drinks
</li>
</ul>
</nav>
<nav class="container"> <a href="#" class="pull" style="display:block;">
<h3>Menu2</h3>
</a>
<ul class="nav" style="display:none;">
<li>Pizza
</li>
<li>Pasta
</li>
<li>Burger
</li>
<li>Specials
</li>
<li>Drinks
</li>
</ul>
</nav>

Try this:
https://jsfiddle.net/thwdyccr/5/
Rather than using IDs - consider using a class instead - this'll save you lots of duplication in your code (as essentially it's all doing the same thing).
You can specify the target selector (e.g. the element you want to show) by traversing your structure with .parent() .children() or .find()
If you're wondering why I am storing $(this) in var element - it is because the browser has to figure out what $(this) is each time you use it - so it's good practice to store it in a variable.
HTML
<nav class="container">
<a href="#" class="pull" style="display:block;">
<h3>Menu1</h3>
</a>
<ul class="nav" style="display:none;">
<li>Bear</li>
<li>Pasta</li>
<li>Burger</li>
<li>Specials</li>
<li>Drinks</li>
</ul>
</nav>
<nav class="container">
<a href="#" class="pull" style="display:block;">
<h3>Menu2</h3>
</a>
<ul class="nav" style="display:none;">
<li>Fish</li>
<li>Pasta</li>
<li>Burger</li>
<li>Specials</li>
<li>Drinks</li>
</ul>
</nav>
JS
$(function() {
$(".pull").click(function(e) {
e.preventDefault();
var element = $(this);
element.parent('nav.container').children("ul.nav").slideToggle();
});
});

You shouldn't use id's for pull. Here's an updated fiddle https://jsfiddle.net/thwdyccr/2/.

Try utilizing Attribute Starts With Selector [name^="value"] [id^=pull] , e.target.parentElement.nextElementSibling to select next ul to call .slideToggle() on
$(function() {
var pull = $("[id^=pull]")
, menu = $("[id^=nav]")
, menuHeight = menu.height();
pull.on("click", function(e) {
e.preventDefault();
$(e.target.parentElement.nextElementSibling).slideToggle();
});
});
jsfiddle https://jsfiddle.net/wpvok7gy/1/

How to select multiple elements with two .each() functions nested?

Ok guys, as promised, here is the real deal, first the sample html:
<li data-foo="bar">
<span id="a"></span>
<ul>
<li>
<span id="1"></span>
<ul>
<li>
<span id="b"></span>
</li>
</ul>
</li>
<li>
<span id="2"></span>
<ul>
<li>
<span id="c"></span>
</li>
</ul>
</li>
</ul>
</li>
<li data-foo="bar">
<span id="d"></span>
<ul>
<li>
<span id="3"></span>
<ul>
<li>
<span id="e"></span>
</li>
</ul>
</li>
<li>
<span id="4"></span>
<ul>
<li>
<span id="f"></span>
</li>
</ul>
</li>
</ul>
</li>
I want to get the window to pop up "12", then pop up "34"... so here is my nested functions attempt:
<script>
var poptext = "";
$('li[data-foo=bar]').each(
function () {
$(this li span).each(function () {
poptext = poptext + $(this).attr("id");
}
alert(poptext);
poptext = "";
);
}
);
</script>
This does not seem to be working, I think Jquery might got confused with multiple "this" keywords? Also there could be something wrong with the selector for those spans to begin with.
Thanks guys!

I think you are looking for the direct descendant selector: >
Used like this:
$('li[data-foo=bar]').each(function () {
var poptext = "";
$(this).find('> ul > li > span').each(function () {
poptext = poptext + $(this).attr("id");
});
alert(poptext);
});
Will only select the nodes that are direct children of the previous expression on the left hand side.
A more verbose, but maybe readable version could be:
$(this).children('ul').children('li').children('span') // selects the same
See it in action here: http://jsfiddle.net/xYgJg/

You have syntax errors in your code, $(this li span) should be $('li span', this) also your logic is off, you aren't filtering out the spans with the letter ids.