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jQuery in Wordpress - Hide parent div if it contains a specific other div

I'm trying to hide a slick slider section if it has no slides. I've tried tons of different options, like trying to use PHP and CSS, but I feel I'm closest to getting it to work with jQuery.
The HTML output structure is:
<div class="container-flex type-testimonials-container">
<div class="container">
<div class="container type-testimonials slick-initialized slick-slider">
<div class="slick-list draggable">
<div class="slick-track">
<div class="slick-slide">
SINGLE SLIDE CONTENT
</div>
<div class="slick-slide">
SINGLE SLIDE CONTENT
</div>
<div class="slick-slide">
SINGLE SLIDE CONTENT
</div>
</div>
</div>
</div>
</div>
</div>
So, I'm thinking I can use jQuery to hide the containing div (.type-testimonials-container) if the single slide div (.slick-slide) doesn't exists.
I have tried the following:
if(jQuery(".slick-slide").html().length)
{
jQuery(".type-testimonials-container").hide();
}
As well as lots of variations of that... I think it might be because the two divs aren't on the same level and one contains the other, but trying to find a parent/child way of doing is proving difficult... I'm not sure which way to go...
Any help would be massively appreciated!
EDIT*
I've also tried checking the parent and child relationship and trying to wait until the DOM has loaded, like this:
document.addEventListener("DOMContentLoaded", function(event) {
var parentDiv = document.getElementsByClassName("slick-track");
var childDiv = document.getElementsByClassName("slick-slide");
if (parentDiv.contains(childDiv))
{
alert("div DOES exist");
}
else{
alert("div DOES NOT exist");
}
});
But this just shows me the DOES NOT exist alert even though it does exist - Will this search the whole of the DOM for it? or do I need to provide the exact path of the div from body or something?

Why not just query for the length of the HTML collection of .slick-slide? JQ will still return an object if the target element doesn't exist, and the object will have a property length. Something like
if(jQuery(".slick-slide").length === 0) {
jQuery(".type-testimonials-container").hide();
}

I managed to do it this way:
jQuery(document).ready(function() {
if(jQuery('.slick-slide').length){
jQuery('.type-testimonials-container').show();
}
else
{
jQuery('.type-testimonials-container').hide();
}
});

How to wrap DIV tags with different class names? [duplicate]

This question already has an answer here:
Closed 10 years ago.
Duplicate:
How can I add a parent element to a group of paragraph?
I have the following HTML blocks repeated in the document
<!-- first block -->
<div class="first">
My first div
</div>
<div class="second">
My second div
</div>
<!-- second block -->
<div class="first">
My first div
</div>
<div class="second">
My second div
</div>
...
How can I wrap the Divs with jQuery to get the resulting HTML like this...
<!-- first block -->
<div class="container">
<div class="first">
My first div
</div>
<div class="second">
My second div
</div>
</div>
<!-- second block -->
<div class="container">
<div class="first">
My first div
</div>
<div class="second">
My second div
</div>
</div>
...

You're in luck, that's exactly what wrapAll is for:
$(".first, .second").wrapAll('<div class="container"></div>');
Live Example | Source
Your edit markedly changes the question. If you need to do the above only within some containing block, you can loop through the containing blocks and apply wrapAll only to their contents. You'll need a way to identify the way you want to group your divs, which you haven't specified in the question.
If the divs have some kind of container around them, you can do this:
$(".block").each(function() {
$(this).find(".first, .second").wrapAll('<div class="container"></div>');
});
In that example, I've assumed the divs are within a container with the class "block".
Live Example | Source
If there's no structural way to identify them, you'll have to do it some other way. For instance, here we do it by assuming any time we see a first, we should stop grouping:
var current = $();
$(".first, .second").each(function() {
var $this = $(this);
if ($this.hasClass('first')) {
doTheWrap(current);
current = $();
}
current = current.add(this);
});
doTheWrap(current);
function doTheWrap(d) {
d.wrapAll('<div class="container"></div>');
}
Live Example | Source
That works because $() gives you the elements in document order, so if we loop through them in order, saving them up, and then wrap up the previous ones whenever we see a new first (and of course, clean up at the end), you get the desired result.
Or here's another way to do that same thing, which doesn't use wrapAll. It relies on the first matched element being a first (so no seconds before firsts!):
var current;
$(".first, .second").each(function() {
var $this = $(this);
if ($this.hasClass('first')) {
current = $('<div class="container"></div>').insertBefore(this);
}
current.append(this);
});
Live Example | Source

$('div').wrapAll('<div class="container" />');
would do it, but that would also wrap any other divs so perhaps:
$('.first, .second').wrapAll('<div class="container" />');
is better.

Hiding many divs with one onclick function

I am looking for a Javascript solution for this problem. I have the following HTML:
<div id = "container">
<div id = "data">
<div>
<h3> Address</h3>
<b>Expand...</b>
<div id="content">ul. Pomorska</div>
</div>
<div>
<h3> Telefon </h3> <b>Expand...</b>
<div id="content">26565352</div>
</div>
<div>
<h3>Email</h3>
<b>Expand...</b>
<div id="content">asdasdag#aga.com</div>
</div>
</div>
</div>
I would like to hide the content div when an onclick Expand is made. So far I have made a function which hides the content divs and tries to assign an event handler to the node.
function hideinfo() {
var node = document.getElementById("data");
var contactdata = node.getElementsByTagName("div");
for(var i=0; i<contactdata.length;i++) {
if(contactdata[i].id == "content") {
alert(contactdata[i].previousSibling.innerHTML);
contactdata[i].previousSibling.addEventListener('click',ShowHide,false);
contactdata[i].style.display="none";
}
}
}
The problem is that the alert displays undefined. Why can't it see the node? Is there a better way to do this in Javascript?

Because previousSibling is most likely the text node before the div element. You probably want to use previousElementSibling instead :)
In most browser today, querySelectorAll, which lets you use CSS selectors for finding elements, is also a good alternative (IE8+)

The previousSibling property returns the previous sibling node (the previous node in the same tree level) of the selected element
which returns in your case the TEXT node.
As you can see in this jsfiddle: http://jsfiddle.net/Xu383/
alert(contactdata[i].previousSibling.nodeName);
You are better of using the querySelectorAll.
Also you can't have multiple divs with the SAME id, use class instead.

jQuery: get a reference to a specific element without using id

I'm tinkering a bit with jquery to show a hidden div when a link is clicked. This should be fairly simple, but there's a flaw to it in this case. I have the following markup:
<div class="first-row">
<div class="week">
<p>Uge 2</p>
<p>(08-01-11)</p>
</div>
<div class="destination">
<p>Les Menuires</p>
<p>(Frankrig)</p>
</div>
<div class="days">4</div>
<div class="transport">Bil</div>
<div class="lift-card">3 dage</div>
<div class="accommodation">
<p><a class="show-info" href="#">Hotel Christelles (halvpension)</a></p>
<p>4-pers. værelse m. bad/toilet</p>
</div>
<div class="order">
<p>2149,-</p>
<p class="old-price">2249,-</p>
</div>
<div class="hotel-info">
<!-- The div I want to display on click -->
</div>
</div>
When I click the "show-info" link I want the "hotel-info" div to display.
My backend devs don't want me to use ids (don't ask me why..) and the above markup is used over and over again to display data. Therefore I need to be able to access the "hotel-info" div in the "first-row" div where the link is clicked.
I've tried to do something like:
$(document).ready(function() {
$('.show-info').click(function() {
var parentElement = $(this).parent().parent();
var lastElementOfParent = parentElement.find(".show-hotel");
lastElementOfParent.show();
});
});
But without a result :-/ Is this possible at all?
Any help is greatly appreciated!
Thanks a lot in advance!

Try this:
$('.show-info').click(function() {
$(this).closest('.accommodation').siblings('.hotel-info').show();
});
Even better imo, as it would be independent from where the link is in a row, if every "row div" has the same class (I assume only the first one has class first-row), you can do:
$(this).closest('.row-class').find('.hotel-info').show();
Reference: .closest, .siblings
Explanation why your code does not work:
$(this).parent().parent();
gives you the div with class .accommodation and this one has no descendant with class .hotel-info.
It is not a good idea to use this kind of traversal for more than one level anyway. If the structure is changed a bit, your code will break. Always try to use methods that won't break on structure changes.

You're right in not using an ID element to find the DIV you want :)
Use closest and nextAll
Live demo here : http://jsfiddle.net/jomanlk/xTWzn/
$('.show-info').click(function(){
$(this).closest('.accommodation').nextAll('.hotel-info').toggle();
});

onclick alert jquery html javascript

I have a page so far with:
<div id="x1">Text paragraph 1<link here></div>
<div id="x2">Text paragraph 2<link here></div>
<div id="x3">Text paragraph 3<link here></div>
Where link here is like
google
What I am trying to do is add a link to the bottom of each paragraph of text so that when it is clicked it displays an alert with the div id of that text block.
So for example, if someone clicks on the link at the bottom of text paragraph 2, then they will get an alert saying "x2".
So far, I have only been able to think of a way involving an onclick event for each link in each div. But with 100 paragraphs this could become quite a lot and is messy code.
like
$('#x1').onclick(function(){
alert('x1');
});
How can I do this better?
The page is generated with php so I could put the div id's anywhere in that text block area (even make a new div around the link if required)...
EDIT - Many good answers, I don't know which to pick as best. I actually ended up using Loongawas for my purpose as its easy to make for my beginner level in php.
<div id='a1'>This text <a href="" onclick=tomato(1)>test</a>
</div>
<div id='a2'>This text <a href="" onclick=tomato(2)>test</a>
</div>
<div id='a3'>This text <a href="" onclick=tomato(3)>test</a>
</div>
and
function tomato(test){
alert(test);
};
Some of the others are incredibly interesting as they use higher functions. I'm going to spend the rest of the day looking into them. Thanks to all.

use jQuery's live or delegate functions:
$('div a').live('click', function(ev){
alert($(this).closest('div').attr('id'));
});
The benefit to the live/delegate functions is that there's actually only a single event on the entire page for this (as opposed to one event per link). If you add more links dynamically, this still works without having to attach more events.
The difference between live and delegate is that delegate is specific to a part of the page. If, for instance, you wrapped all of these DIVs in another div, the call would look like:
$('#wrapperDiv').delegate('a', 'click', function(ev){ ...
The advantage to this is that the internal jQuery code that checks to see if the click matches the selector only runs on clicks inside of #wrapperDiv instead of clicks anywhere on the page.

You could make a javascript function that takes a variable and then pass the paragraph number to the function. If the paragraph was number two you could call
myfunction(2);
or is the number not the problem?

$('#x1, #x2, #x3').click(function(){
alert($(this).parents().attr("id"));
});
EDIT:
Better version:
HTML:
<div class="x">Text paragraph 1<link here></div>
<div class="x">Text paragraph 2<link here></div>
<div class="x">Text paragraph 3<link here></div>
$('.x a').click(function(){
alert($(this).parents().attr("id"));
});

Have you considered using a class to name them all as opposed to explicit ids?
<div class="x">Text paragraph 1<link here></div>
<div class="x">Text paragraph 2<link here></div>
<div class="x">Text paragraph 3<link here></div>
so then you would be able to use a single click event for all of them?
$(".x a").click()
{
//Use $(this) to refer to the clicked item.
alert($(this).parents().attr("id"));
});

$('.myDivs').click(function(){
alert($(this).parent().attr("id"));
});
Or select the divs in some other way:
$('#x1').parent().children('div').click(...);

Something along these lines should work:
<div id="x1">Text paragraph 1 <a href='google.com'>google.com</a></div>
<div id="x2">Text paragraph 2 <a href='google.com'>google.com</a></div>
<div id="x3">Text paragraph 3 <a href='google.com'>google.com</a></div>
<script src='http://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js'></script>
<script>
$('a').click(function() {
alert($(this).parent().attr('id'))
return false
})
</script>

Add a class to each div, so you can select all of 'em at once.
<div id="x1" class="x">Text paragraph 1 <a>Click</a></div>
<div id="x2" class="x">Text paragraph 2 <a>Click</a></div>
<div id="x3" class="x">Text paragraph 3 <a>Click</a></div>
Then you can do:
$('div.x a').live('click', function(e){
e.preventDefault();
alert($(this).closest('div.x').attr('id'));
});
http://jsfiddle.net/VGh3X/1/

A better approach to this is to make all of the clickable areas share something in common that you can use as a selector. For example, if all of the clickable divs had class='click', you'd be able to select them all using $('.click') and bind to that.
$('.click a').bind('click', function() {
var div = this.closest('.click');
alert(div.attr('id'));
return false;
});

$(document).ready(function() {
var links = $("div[id^='x'] a"); //get the a tags
$.each(links, function(i,v) {
$(v).click(function() { //bind on click
alert(v.parentNode.id); //alert div id
return false; // stop
});
});
});