@DownPW yes, the same methodology is used for the theme switcher in NodeBB v2.x 
ohh yes, don’t see that to be honest.
Button appear but hard to position it correctly for all resolution.
The button moves according to the resolution. it is not fixed
@DownPW if you use apend then it should reflect the div it is inserted into.
The version of the theme switcher from the NodeBB v2 series used the same mechanism, and that code is still listed in this forum. It would be a good idea to review that code for inspiration as the placement for the switcher drop down was set depending on screen estate.
@DownPW this should provide the functionality you are looking for
// ------------------------------------------
// material View Mode
// ------------------------------------------
function material() {
$(document).ready(function () {
// Create the button for custom thread view mode with custom IDs
if ($('#materialThreadViewButton').length === 0) {
var threadViewButton = $('<div class="material-threads-wrapper"><form class="form"><div class="form-check form-switch form-switch-sm material-threads-wrapper"> \
<input class="form-check-input" id="materialThreadViewButton" type="checkbox" data-field="materialThreadView"> \
<label class=" d-none d-md-inline fw-semibold" for="materialThreadViewButton"></label> \
</div></form></div>');
// Check if the screen width is 460px or more
if ($(window).width() >= 991) {
// Check if the custom thread view button already exists in the right sidebar
var buttonContainer = $('[component="sidebar/right"]');
// Append the button to the selected container
buttonContainer.append(threadViewButton);
}
if ($(window).width() <= 991) {
// Check if the custom thread view button already exists in the bottom bar
//$buttonContainer = $('.bottombar-nav.p-2.text-dark.bg-light.d-flex.justify-content-between.align-items-center.w-100');
if ($("#logged-in-menu").length > 0) {
var buttonContainer = $('.bottombar-nav ul#logged-in-menu');
}
else {
var buttonContainer = $('.bottombar-nav ul#logged-out-menu');
}
// Prepend the button to the selected container
buttonContainer.prepend(threadViewButton);
}
}
// Check if there's a stored state for the checkbox and update it
var storedState = localStorage.getItem('materialThreadViewState');
console.log("Stored State is " + storedState);
if (storedState === 'true') {
$('#materialThreadViewButton').prop('checked', true);
}
// Toggle the class 'material' on or off when the checkbox changes state
$('#materialThreadViewButton').on('change', function () {
var isChecked = $(this).is(':checked');
var theTooltip = isChecked ? "Material View Off" : "Material View On"; // Update tooltip message
// Toggle CSS rules when the button is turned on or off
if (isChecked) {
console.log('Material Thread view is active.');
// Apply your CSS rules here
$('[component="category/topic"]').addClass('material');
$('li[component="category/topic"]').addClass('material');
$('[component="categories/category"]').addClass('material');
$('.posts-container').addClass('material')
$('ul[component="topic"]').addClass('material')
$('.post-container').addClass('material')
$('.timeline-event').addClass('material')
$('[component="post/footer"]').addClass('material')
$('li.pt-4.deleted').addClass('material')
$('.page-topic .topic .posts.timeline .timeline-event > div:first-of-type, .page-topic .topic .posts.timeline > [component="post/placeholder"] > div:first-of-type, .page-topic .topic .posts.timeline > [component=post] > div:first-of-type').addClass('material');
$('[component="post"]').each(function () {
// Add the 'material' class to matching elements
if ($(this).hasClass('pt-4') || $(this).hasClass('self-post')) {
$(this).addClass('material');
$('[component="sidebar/right"]').addClass('material');
}
});
$('[component="topic/necro-post"]').each(function () {
// Add the 'material' class to matching elements
if ($(this).hasClass('timeline-event')) {
$(this).addClass('material');
}
});
} else {
console.log('Material Thread view is inactive.');
// Remove the CSS rules here
$('[component="category/topic"]').removeClass('material');
$('li[component="category/topic"]').removeClass('material');
$('[component="categories/category"]').removeClass('material');
$('[component="post"]').removeClass('material');
$('ul[component="topic"]').removeClass('material');
$('.posts-container').removeClass('material')
$('ul[component="topic"]').removeClass('material')
$('.post-container').removeClass('material')
$('.timeline-event').removeClass('material')
$('[component="post/footer"]').removeClass('material');
$('li.pt-4.deleted').removeClass('material');
$('.page-topic .topic .posts.timeline .timeline-event > div:first-of-type, .page-topic .topic .posts.timeline > [component="post/placeholder"] > div:first-of-type, .page-topic .topic .posts.timeline > [component=post] > div:first-of-type').removeClass('material');
$('[component="sidebar/right"]').removeClass('material');
}
// Store the checkbox state in localStorage
localStorage.setItem('materialThreadViewState', isChecked);
// Update the tooltip title
$(this).attr('data-original-title', theTooltip).tooltip('dispose').tooltip({
placement: 'bottom',
title: theTooltip,
trigger: 'hover'
});
});
// Check for changes in the checkbox state when the page loads
$('#materialThreadViewButton').trigger('change');
});
}
Result
I ddjusted some of your CSS - added this block
#logged-out-menu .material-threads-wrapper {
top: 5px;
position: relative;
}
Also removed this block
#materialThreadViewButton {
}
Not needed 
There are are two checks - one tests the screen estate and positions the menu item depending on size, and the other will see if the user is logged in or not, and if they are, it uses ul#menu-logged-in else it uses ul#menu-logged-out
But only for the mobile view because .bottom-bar is based on both logged in and logged out sessions
Enjoy
Thank you Mark for the button in Smartphone.
In nodeBB 3.5.0, we can use .bottombar-nav-left or .bottombar-nav-right because @baris have created this components follow-up to my topic.
Maybe update the code at this moment because cleaner.
See here:
https://community.nodebb.org/post/96323
@phenomlab said in Material View Support foir Stock NodeBB:
There are are two checks - one tests the screen estate and positions the menu item depending on size, and the other will see if the user is logged in or not, and if they are, it uses ul#menu-logged-in else it uses ul#menu-logged-out
Seems to be good.
I have again one or 2 other modification like the scroll to top button .material class to add because the button is hard to see on small phone resolutions It blends in with the color of the block of the categories. Nothing insurmountable I think. I’m getting good results
I’m happy, this code is starting to look like something
@DownPW great. I did see the 3.5.0 changes and they look like a good idea, but can’t comment until I’ve tried them.
you’re right as usual my friend
Test material view display on my smartphone. Seems I have a little work again
@DownPW Good luck - let me know if you need any help.
Seems to be good :
just the line from the timeline on the left that I can’t seem to display. But I note that it’s the same here on Smartphones
I need to check and recheck now 
–> For now test function in production…
I provide all JS and CSS code for all after… and after @phenomlab check and validate of course
– EDIT :
Can you correct the title of the topic please ?
@DownPW done. Fixed a typo
Hello @phenomlab
I didn’t even notice because I never use this mode. But when I say never it’s so much that I forget that it’s possible to do it.
When right sidebar is expand, the button is at the bottom of the sidebar like this :
–> For now, I resolve the problem by change var buttonContainer = $('[component="sidebar/right"]'); for var buttonContainer = $('[component="sidebar/drafts"]');
// ------------------------------------------
function material() {
$(document).ready(function () {
// Create the button for custom thread view mode with custom IDs
if ($('#materialThreadViewButton').length === 0) {
var threadViewButton = $('<div class="material-threads-wrapper"><form class="form"><div class="form-check form-switch form-switch-sm material-threads-wrapper"> \
<input class="form-check-input" id="materialThreadViewButton" type="checkbox" data-field="materialThreadView"> \
<label class=" d-none d-md-inline fw-semibold" for="materialThreadViewButton"></label> \
</div></form></div>');
// Check if the screen width is 991px or more
if ($(window).width() >= 991) {
// Check if the custom thread view button already exists in the right sidebar
var buttonContainer = $('[component="sidebar/drafts"]');
// Append the button to the selected container
buttonContainer.append(threadViewButton);
}
if ($(window).width() <= 991) {
// Check if the custom thread view button already exists in the bottom bar
//$buttonContainer = $('.bottombar-nav.p-2.text-dark.bg-light.d-flex.justify-content-between.align-items-center.w-100');
if ($("#logged-in-menu").length > 0) {
var buttonContainer = $('.bottombar-nav ul#logged-in-menu');
}
else {
var buttonContainer = $('.bottombar-nav ul#logged-out-menu');
}
// Prepend the button to the selected container
buttonContainer.prepend(threadViewButton);
}
}
..............
it’s clearly better :
but if you have better solution (like add text if sidebar is expand for example) I take it
Seems this solution give me a new bug for tooltip
I have test this with no working :
if (isChecked) {
$('[component="sidebar/drafts"]').find('[data-toggle="tooltip"]').tooltip('dispose');
} else {
$('[component="sidebar/drafts"]').find('[data-toggle="tooltip"]').tooltip();
}
@DownPW Seems to work fine for me?
@DownPW It doesn’t look right - the toggle switch is now located at the top of the menu
@DownPW Try this. Change the function to
function material() {
$(document).ready(function () {
// Create the button for custom thread view mode with custom IDs
if ($('#materialThreadViewButton').length === 0) {
var threadViewButton = $('<div class="material-threads-wrapper"><form class="form"><div class="form-check form-switch form-switch-sm material-threads-wrapper"> \
<input class="form-check-input" id="materialThreadViewButton" type="checkbox" data-field="materialThreadView"> \
<label class=" d-none d-md-inline fw-semibold" for="materialThreadViewButton"></label> \
</div></form></div>');
// Check if the screen width is 991px or more
if ($(window).width() >= 991) {
// Check if the custom thread view button already exists in the right sidebar
//var buttonContainer = $('[component="sidebar/right"]ul#logged-in-menu');
if ($("#logged-in-menu").length > 0) {
var buttonContainer = $('ul#logged-in-menu');
}
else {
var buttonContainer = $('ul#logged-out-menu');
}
// Append the button to the selected container
buttonContainer.append(threadViewButton);
}
if ($(window).width() <= 991) {
// Check if the custom thread view button already exists in the bottom bar
//$buttonContainer = $('.bottombar-nav.p-2.text-dark.bg-light.d-flex.justify-content-between.align-items-center.w-100');
if ($("#logged-in-menu").length > 0) {
var buttonContainer = $('.bottombar-nav ul#logged-in-menu');
}
else {
var buttonContainer = $('.bottombar-nav ul#logged-out-menu');
}
// Prepend the button to the selected container
buttonContainer.prepend(threadViewButton);
}
}
// Check if there's a stored state for the checkbox and update it
var storedState = localStorage.getItem('materialThreadViewState');
console.log("Stored State is " + storedState);
if (storedState === 'true') {
$('#materialThreadViewButton').prop('checked', true);
}
// Toggle the class 'material' on or off when the checkbox changes state
$('#materialThreadViewButton').on('change', function () {
var isChecked = $(this).is(':checked');
var theTooltip = isChecked ? "Material View Off" : "Material View On"; // Update tooltip message
// Remove any existing tooltips
$(this).tooltip('dispose');
// Toggle CSS rules when the button is turned on or off
if (isChecked) {
console.log('Material Thread view is active.');
// Apply your CSS rules here
$('[component="category/topic"]').addClass('material');
$('li[component="category/topic"]').addClass('material');
$('[component="categories/category"]').addClass('material');
$('.posts-container').addClass('material')
$('ul[component="topic"]').addClass('material')
$('.post-container').addClass('material')
$('.timeline-event').addClass('material')
$('[component="post/footer"]').addClass('material')
$('li.pt-4.deleted').addClass('material')
$('.page-topic .topic .posts.timeline .timeline-event > div:first-of-type, .page-topic .topic .posts.timeline > [component="post/placeholder"] > div:first-of-type, .page-topic .topic .posts.timeline > [component=post] > div:first-of-type').addClass('material');
$('#pageUp.show').addClass('material');
$('[component="post"]').each(function () {
// Add the 'material' class to matching elements
if ($(this).hasClass('pt-4') || $(this).hasClass('self-post')) {
$(this).addClass('material');
$('[component="sidebar/right"]').addClass('material');
}
});
$('[component="topic/necro-post"]').each(function () {
// Add the 'material' class to matching elements
if ($(this).hasClass('timeline-event')) {
$(this).addClass('material');
}
});
} else {
console.log('Material Thread view is inactive.');
// Remove the CSS rules here
$('[component="category/topic"]').removeClass('material');
$('li[component="category/topic"]').removeClass('material');
$('[component="categories/category"]').removeClass('material');
$('[component="post"]').removeClass('material');
$('ul[component="topic"]').removeClass('material');
$('.posts-container').removeClass('material')
$('ul[component="topic"]').removeClass('material')
$('.post-container').removeClass('material')
$('.timeline-event').removeClass('material')
$('[component="post/footer"]').removeClass('material');
$('li.pt-4.deleted').removeClass('material');
$('.page-topic .topic .posts.timeline .timeline-event > div:first-of-type, .page-topic .topic .posts.timeline > [component="post/placeholder"] > div:first-of-type, .page-topic .topic .posts.timeline > [component=post] > div:first-of-type').removeClass('material');
$('#pageUp.show').removeClass('material');
$('[component="sidebar/right"]').removeClass('material');
}
// Store the checkbox state in localStorage
localStorage.setItem('materialThreadViewState', isChecked);
// Update the tooltip title
$(this).attr('data-original-title', theTooltip).tooltip('dispose').tooltip({
placement: 'bottom',
title: theTooltip,
trigger: 'hover'
});
});
// Check for changes in the checkbox state when the page loads
$('#materialThreadViewButton').trigger('change');
});
}
And modify this CSS to the below
@media (min-width: 991px) {
#materialThreadViewButton {
border-radius: 7px;
cursor: pointer;
position: relative !important;
z-index: 999;
display: flex;
left: 15px !important;
top: 5px !important;
transform: rotate(90deg) !important;
}
}
Essentially, we have to change the positioning of the block to use the logged-in and logged-out ID’s
// Check if the screen width is 991px or more
if ($(window).width() >= 991) {
// Check if the custom thread view button already exists in the right sidebar
//var buttonContainer = $('[component="sidebar/right"]ul#logged-in-menu');
if ($("#logged-in-menu").length > 0) {
var buttonContainer = $('ul#logged-in-menu');
}
else {
var buttonContainer = $('ul#logged-out-menu');
}
// Append the button to the selected container
buttonContainer.append(threadViewButton);
}
I tested the same thing but added a container like [component="sidebar/right"] or [component="sidebar/drafts"] or the sidebar right CSS class. it worked but it created other bugs
I’m not sure I would have thought to do this without specifying a container and just use ul#logged-out-menu & ul#logged-in-menu ALONE, no component or CSS class
Thanks @phenomlab
@DownPW The real issue here is that you should always bind (either append or prepend) to an ID rather than a class. You can guarantee in most cases that the ID is unique, whereas the class probably isn’t, and that’s what is causing your issue.
