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Toggle re-hides all divs; need parent div to remain visible

Apologies in advance, I'm not terribly familiar with Javascript, but I do understand what this code is doing and why it is causing me this problem. I'm just not sure how to go about solving it AT all.
On my webpage I have an open/close dialogue toggle which is the parent div, the dialogue box is hidden upon the page loading. Within this dialogue box are more hidden divs for the dialogue options. Problem is, when one of the dialogue options is clicked, the script hides the entire dialogue box, preventing any of the dialogue options from being seen, because it can only show one div at a time, regardless of its parent or child status. When a div is clicked, all other divs are re-hidden.
I need the parent div to remain visible until the dialogue box toggle is clicked again. The individual choices DO need to hide/unhide when another choice is clicked.
Not sure if I should include any CSS here, it's just styling the dialogue box and its buttons within.
<div id="dialogue" style="display:none;">
<div class="room">
Room description here. What do you do?
<div class="buttons">
Pet the cat.
<br>
<div id="cat" style="display:none;">aw yeah kitty time</div>
Turn on the radio.
<br>
<div id="radio" style="display:none;">
<br>
audio file and tracklist here
</div>
</div>
</div>
</div>
<span class="toggle">
[Open/close dialogue.]
</span>
<script type="text/javascript">
var divs = ["cat", "radio", "dialogue"];
var visibleDivId = null;
function divVisibility(divId) {
if(visibleDivId === divId) {
visibleDivId = null;
} else {
visibleDivId = divId;
}
hideNonVisibleDivs();
}
function hideNonVisibleDivs() {
var i, divId, div;
for(i = 0; i < divs.length; i++) {
divId = divs[i];
div = document.getElementById(divId);
if(visibleDivId === divId) {
div.style.display = "block";
} else {
div.style.display = "none";
}
}
}
</script>
I probably need a third function here because currently all the toggles are grouped together, hence why they're interacting like this, but I don't have the first clue how to accomplish this. I have been looking and haven't found anything that seems to match my needs.

Made a few corrections to your HTML so the href does not refresh the page on click. Also added in a few attributes (aria-controls) to track which div the button controls. I added comments to the JavaScript. There are plenty of Aria attributes they typically help with accessibility but they are super useful for keeping track of things in HTML and passing information to JavaScript.
//create a function to handle the click that takes in the event as a argument
function handleClick(event) {
//find out which div the button controls
const ariaControls = event.currentTarget.getAttribute("aria-controls"),
//select the controlled div
controlledAria = document.getElementById(ariaControls);
// if the controlled div is cat
if (ariaControls === "cat") {
// hide the radio div
document.getElementById("radio").classList.add("hide");
// if the controlled div is radio
} else if (ariaControls === "radio") {
// hide the car div
document.getElementById("cat").classList.add("hide");
}
//toggle the hide div on the controlled div
controlledAria.classList.toggle("hide");
}
//select all the buttons
const buttons = document.querySelectorAll("button");
//for each button add an event listener when the button is clicked run the handle click function
buttons.forEach(button => button.addEventListener("click", handleClick))
.hide {
display: none;
}
<div id="dialogue" class="hide">
<div class="room">
Room description here. What do you do?
<div class="buttons">
<button aria-controls="cat">Pet the cat.</button><br>
<div id="cat" class="hide">aw yeah kitty time</div>
<button aria-controls="radio">Turn on the radio.</button><br>
<div id="radio" class="hide">audio file and tracklist here
</div>
</div>
</div>
</div>
<span class="toggle"><button aria-controls="dialogue">[Open/close dialogue.]</button></span>

hide / show div with a button not in the same div

I'm using elementor for my wordpress site and I wish to have a button in a first div (section) that control if a second and separate div (section) is display or not. I've tried to use the checkbox hack but it's working only if the checkbox is in the div as the content https://css-tricks.com/the-checkbox-hack/
Is there a solution to use CSS or even javascript ? If you advice to me to use javascript I'll put in my function.php file and as I'm begginer in javascript can you please write all the function I have to implement into my function.php file.
Basically it means :
<div>button</div> <div>content to show and hide on click on the button</div>
Best regards,
Clément

You can use Jquery:
1-Put an id to your DIV
<div id = "btn_show"> button </div> <div id = "show"> content to show and hide on click on the button </div>
2-Call jquery to display it
$("#btn_show").click(function(){
$("#show").show();
//or
$("#show").hide();
});
And jquery you can call it with CDN
<script src="https://code.jquery.com/jquery-3.6.0.js"</script>

In javascript without any library this could be very easy but you need to put an id on your divand your button.
<div id="myButton">button</div>
<div id="myDiv">
content to show and hide on click on the button
</div>
Then you just add a script section like this : (it just need to be after your div and your button in the DOM)
<script>
var myDiv = document.getElementById('myDiv');
var myButton = document.getElementById('myButton');
myButton.addEventListener('click', e => {
myDiv.classList.toggle('visible'):
});
</script>
And at last, you need a css like this:
.visible {
display: none;
}

Thanks for all of yours answers! Here what I use:
<button onclick="myFunctionopenclose()">Click Me</button>
<div id="myDiv" style="display:none;">content to hide and show</div>
<script> function myFunctionopenclose() {
var x = document.getElementById("myDiv");
if (x.style.display === "block") {
x.style.display = "none"; }
else {
x.style.display = "block";}}
Best regards,
Clément

Collapsible not expanding

I have a button containing a div with contents. When clicking the div, I want the collapsed content to expand. Upon hovering above the div, it changes color and the pointer changes, just as I like. However, upon clicking nothing happens: the collapsed content does not expand. What is wrong with my code?
var coll = document.getElementsByClassName("contents");
var i;
for (i = 0; i < coll.length; i++) {
coll[i].addEventListener("click", function() {
this.classList.toggle("active");
var collapse = this.nextElementSibling;
if (collapse.style.display === "block") {
collapse.style.display = "none";
} else {
collapse.style.display = "block";
}
});
}
<div class="results">
<button type="button" class="contents">
<div class="info">
...
</div>
</button>
<div class="collapse">
<p>Text only shown when expanding</p>
</div>
</div>

Okay...It worked when I put the script tag at the end instead of in the head section!

It is better for you to use jQuery as a client-side framework for better performance, cross-browser and fewer lines of code.
You can use $('.collapse').slideToggle() function for your project. Documentation

How to open part of an accordion when clicking on a link in the same page

I have a page which has accordion functionality closed by default and opens when content is clicked, indicated by arrows. I have a link at the very top of the page and I would like it to jump to a specific section of the accordion content and open it. I am having great difficulty in getting this to work as my Javascript knowledge is very limited! It currently does nothing. Any help would be appreciated.
I have tried an anchor link in the top of the page which jumps to the area of the accordion with the content, but I am not sure what to try next to get the content section to open.
Here is the initial link that I would like to anchor and open accordion content when clicked:
<p class="text_center">
We've made some changes to our Privacy Policy -
<a href="#updates" style="color:red; text-decoration:none;">
<span style="color:red;">
<strong>click here</strong>
to see the changes
</span>
</a>
</p>
Here is the accordion section I would like to open when the link is clicked:
<div class="about-panel2" id="updates">
Here is the CSS for 'about-panel2':
.about-panel2 {
padding: 0 18px;
max-height: 0;
overflow: hidden;
transition: max-height 0.2s ease-out;
}
Here is the Script:
<script>
var acc = document.getElementsByClassName("about-accordion2");
var i;
for (i = 0; i < acc.length; i++) {
acc[i].addEventListener("click", function() {
this.classList.toggle("active");
var panel = this.nextElementSibling;
if (panel.style.maxHeight){
panel.style.maxHeight = null;
} else {
panel.style.maxHeight = panel.scrollHeight + "px";
}
});
}
</script>
When clicked, the page attempts to jump to the content, but the accordion doesn't show. I am aware I need to amend (?) the script to make this work but I have no idea what to do next! Any help would be greatly appreciated. Thanks in advance.

you can do that by adding the active class to that accordion on click of that link.
Example:
adding onClick event
<p class="text_center">
We've made some changes to our Privacy Policy -
<a href="#updates" style="color:red; text-decoration:none;" onclick="openAccordian('updates')">
<span style="color:red;">
<strong>click here</strong>
to see the changes
</span>
</a>
</p>
adding a function in script
<script>
function openAccordian(id) {
document.getElementById(id).classList.toggle("active");
}
</script>

Hi Rachel and welcome to SO.
To do this you need to insert a small amount of JS
var hash = window.location.hash;
var anchor = $('a[href$="'+hash+'"]');
if (anchor.length > 0){
anchor.click();
}
This allows the accordion to be opened from an external link. For a more detailed example and explanation please visit this tutorial

Javascript show/hide, show first div on page load

Can you help me to make the first div show on page load?
function showStuff(element) {
var tabContents = document.getElementsByClassName('tabContent');
for (var i = 0; i < tabContents.length; i++) {
tabContents[i].style.display = 'none';
}
var tabContentIdToShow = element.id.replace(/(\d)/g, '-$1');
document.getElementById(tabContentIdToShow).style.display = 'block';
}
.tabContent {
display:none;
}
<div tabindex="1" class="tabs"><div id="tabs1" onclick="showStuff(this)">CARATTERISTICHE</div><div class="triangle-down-tab"></div></div>
<div id="tabs2" onclick="showStuff(this)">DESTINATARI</div><div class="triangle-down-tab"></div></div>
<div tabindex="3" class="tabs"><div id="tabs3" onclick="showStuff(this)"><i class="fa fa-calendar" style="color:#000000;"></i> CALENDARIO</div><div class="triangle-down-tab"></div></div>
<a name="contenuto"><hr></a>
<div id="tabs-1" class="tabContent">
<p>tab 1</p>
</div>
<div id="tabs-2" class="tabContent">
<p>tab 2 tab 2 </p>
</div>
<div id="tabs-3" class="tabContent">
<p>tab 3 tab 3 tab 3</p>
</div>
This is my actual code. jsFiddle
Thanks!

You could try running a function when the document is ready.
$(document).ready(function () {
showTab("tabs-1");
function showTab(divId) {
//Get the element
var divElement= document.getElementbyId(divId);
//Set the css property "display" from "none" to be "block";
divElement..style.display = "block";
}
}):
The function should run once the page has fully loaded.
Let me know how it goes.

I sure can. When you do this kind of stuff best use css. That way when the dom loads the css will kick in and your desired effect will show.
Further more its easier to understand and easier to code up.
.tabContent {
display:none;
}
.tabContent.active {
display:block;
}
Then in the HTML
<div id="tabs-1" class="tabContent active">
So when the page loads tab one is active
Then in your JS
function showStuff(element) {
var tabContents = document.getElementsByClassName('tabContent');
for (var i = 0; i < tabContents.length; i++) {
tabContents[i].className="tabContent";
}
var tabContentIdToShow = element.id.replace(/(\d)/g, '-$1');
document.getElementById(tabContentIdToShow).className="tabContent active";
}
Updated fiddle!
https://jsfiddle.net/rb5c5095/3/
We could improve things since we know all the tabs will be made invisible at boot up and tab 1 will show. So when a tab is clicked we could just search the tab who has .active class and remove it, then apply the .active class to the new tab. This would have the benefit that any extra css you add in your html markup would not be removed by the JS code, but i reckon you can work that out and if you can't get back to me i can show you :-)

Here I am invoking the function (upon page load) that tweaks the css of the desired block;
Same can be achieved by $(document).ready;
I took this approach to avoid jquery;
window.onload = showDivOne();
function showDivOne() {
document.getElementById("tabs-1").style.display = "block";
}