Develop Reference

TinyMCE color picker dropdown appears off-screen

This is an issue on Firefox and IE so far that I've tested; the problem does not exist on Chrome.
I'm including two TinyMCE editors on a page with one partially off-screen to start. When I select the color picker dropdown option from the toolbar on the first TinyMCE instance, the dropdown appears where it should. But if I scroll down and select the color picker dropdown in the second instance, that dropdown appears way below the editor and typically off the page.
You can see this in action here: http://jsfiddle.net/nm6wtca3/
Without removing the html, body CSS, what can I do to have the color picker always appear in the correct position?
I've traced the problem down to setting CSS on the html, body elements.
html, body {
width: 100%;
height: 100%;
overflow-x: hidden;
}
The dropdown div has CSS applied to it that is auto-calculated by TinyMCE. It looks something like this:
z-index: 65535;
left: 641.467px;
top: 633px;
width: 162px;
height: 105px;
How it appears in FF (sometimes way worse):
How it appears in Chrome (how it should look):

You did say you don't want to remove any CSS from the html,body, but you didn't say anything about adding to it! This solution is based on the assumption that you can add to the html,body
Solution
html, body {
width: 100%;
height: 100%;
overflow-x: hidden;
position: relative; /* Line added */
}
JSFiddle Example
I hope this helps. In all reality, you really only need to apply position: relative; to the body like so body { position: relative; }

I'm not super familiar with tinymce's colorpicker, but I can see the issue, and I can replicate it reliably: your problem occurs when you have a picker open, and then you scroll. I can replicate this in chrome too. Here's a video.
When I look at the DOM, I see that tinyMCE has created two absolute-positioned divs at the end of document.body, one for each picker. When you open one, their position is updated to reflect the location of the toolbar-button at the time you clicked it, but it never gets updated when you scroll!
So, how to solve this? Well, there are a few possibilities:
Option 1: it looks like tinyMCE provides a method to bind a control to an event (here). With this, you could bind a callback to 'scroll' that repositions the box...
Huh, now that I think of it, you could simply close any open colorpickers whenever a user scrolls ... kinda feels like a cop-out but there's no denying it has the best R.O.I. ;) We'll call that Option 2!
Option 3: depending on the implementation of the colorpicker, you may be able to override where in the DOM those divs get rendered. The API method I saw that looked the most promising is here. Once you have the div inside a relative-positioned parent, you'd also have to make the colorpicker's positioning algorithm smart enough to look in the right place for x and y offset ...when I tried this by just moving the element and mashing in some css by hand in chrome-console, the algorithm still computed x and y offsets based on doc.body, so depending on where you were scrolled at click-time, everything would be out of position
It looks like this issue might be troubling other people as well... maybe they've found a solution but haven't posted anything about it?
I hope this is enough info to get you past the problem... Let me know if you have any questions!

It looks like the problem is caused by overflow-x: hidden;
It may not be the answer you want but removing that or moving it to a page wrapper will solve your problem.
Working Example
html, body {
width: 100%;
height: 100%;
padding:0;
margin:0;
}
#pagewrapper{
overflow-x: hidden;
}
Another option would be to force repositioning on scroll, but honestly this is overkill... I strongly recommend fixing the css instead.
Another working example
$('body').scroll(posfix); // when the body scrolls
$('#mceu_10').click(posfix); // when you click the top font color button
$('#mceu_35').click(posfix); // when you click the bottom font color button
function posfix() {
setTimeout(function () { // hack way to ensure it fires after the menu is shown
$('#mceu_51').css({
top: $('#mceu_10').offset().top + $('#mceu_10').height(), // set top/left based on button's position
left: $('#mceu_10').offset().left + $('#mceu_10').width() / 2
});
$('#mceu_52').css({
top: $('#mceu_35').offset().top + $('#mceu_35').height(),
left: $('#mceu_35').offset().left + $('#mceu_35').width() / 2
});
}, 1);
}

it works on firefox, and Internet Explorer fine
just remove this css code
html, body {
width: 100%;
height: 100%;
overflow-x: hidden;
}

Please take a look at this:
html,
body {
width: auto;
height: auto;
overflow-x: hidden;
}
You can simply set body width and height to auto, then there won't be any need to use position and you don't have to remove anything. I think you do not need to use height: 100% since it will be auto-calculated by TinyMCE. i hope it helped.
Update
Look at the screen shot from chrome and its same in firefox. And i didn't remove any css but just changed..and by putting 100% in css the output will be like :-
Please check this one with auto but not 100%..thank you

Hide iframe scrollbar but allow scrolling [duplicate]

I want to hide any scrollbars from my div elements and my whole body, but still let the user scroll with the mouse wheel or arrow keys. How can this be achieved with raw JavaScript or jQuery? Any ideas?

Like the previous answers, you would use overflow:hidden to disable the scrollbars on the body/div.
Then you'd bind the mousewheel event to a function that would change the scrollTop of the div to emulate scrolling.
For arrow keys, you would bind the keydown event to recognize an arrow key, and then change scrollTop and scrollLeft of the div as appropriate to emulate scrolling.
(Note: you use keydown instead of keypress since IE doesn't recognize keypress for arrow keys.)
Edit: I couldn't get FF/Chrome to recognize keydown on a div, but it works in IE8. Depending on what you needed this for, you can set a keydown listener on the document to scroll the div. (Check out the keyCode reference as an example.)
For example, scrolling with the mouse wheel (using jQuery and a mousewheel plugin):
<div id="example" style="width:300px;height:200px;overflow:hidden">
insert enough text to overflow div here
</div>
<script>
$("#example").bind("mousewheel",function(ev, delta) {
var scrollTop = $(this).scrollTop();
$(this).scrollTop(scrollTop-Math.round(delta));
});
</script>
(This is a quick mockup, you'd have to adjust the numbers since for me, this scrolls a bit slowly.)
keyCode reference
mousewheel plugin
keydown, keypress # quirksmode
Update 12/19/2012:
The updated location of the mousewheel plugin is at: https://github.com/brandonaaron/jquery-mousewheel

What about a purely CSS solution?
Solution 1 (cross browser but more hacky)
#div {
position: fixed;
right: -20px;
left: 20px;
background-color: black;
color: white;
height: 5em;
overflow-y: scroll;
overflow-x: hidden;
}
<html>
<body>
<div id="div">
Scrolling div with hidden scrollbars!<br/>
On overflow, this div will scroll with the mousewheel but scrollbars won't be visible.<br/>
Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>
</div>
</body>
</html>
Solution 2 (uses experimental features, may not support some browsers)
Just add the nobars class to any element you want to hide the scrollbars on.
.nobars {
/* Firefox: https://developer.mozilla.org/en-US/docs/Web/CSS/scrollbar-width */
scrollbar-width: none;
/* IE: https://msdn.microsoft.com/en-us/library/hh771902(v=vs.85).aspx */
-ms-overflow-style: none;
}
.nobars::-webkit-scrollbar {
/* Chrome/Edge/Opera/Safari: https://css-tricks.com/custom-scrollbars-in-webkit/ */
display: none;
}
Solution 3 (cross browser javascript)
Perfect Scrollbar doesn't require jQuery (although it can utilise jQuery if installed) and has a demo available here. The components can be styled with css such as in the following example:
.ps__rail-y {
display: none !important;
}
Here is a complete example including the implementation of Perfect Scrollbar:
<link rel="stylesheet" href="css/perfect-scrollbar.css">
<style>
#container {
position: relative; /* can be absolute or fixed if required */
height: 200px; /* any value will do */
overflow: auto;
}
.ps__rail-y {
display: none !important;
}
</style>
<script src='dist/perfect-scrollbar.min.js'></script>
<div id="container">
Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>Scrollable<br>
</div>
<script>
// on dom ready...
var container = document.getElementById("container");
var ps = new PerfectScrollbar(container);
//ps.update(container);
//ps.destroy(container);
</script>

You dont have to use jquery or js to make this. Its more performant with simple webkit.
Just add the code below to your css file.
::-webkit-scrollbar {
display: none;
}
Caution !
This will disable all the scrollbar so be sure to put it in a specific class or id if you just want one to be hidden.

I much prefer SamGoody's answer provided to a duplicate of this question. It leaves native scrolling effects intact, instead of trying to manually re-implement for a few particular input devices:
A better solution is to set the target div to overflow:scroll, and wrap it inside a second element that is 8px narrower, who's overflow:hidden.
See the original comment for a fleshed-out example. You may want to use JavaScript to determine the actual size of scrollbars rather than assuming they are always 8px wide as his example does.

To get this working for me, I used this CSS:
html { overflow-y: hidden; }
But I had problems using $(this).scrollTop(), so I bound to my #id, but adjusted the scrollTop of window. Also, my smooth scrolling mouse would fire lots of 1 or -1 deltas, so I multiplied that by 20.
$("#example").bind("mousewheel", function (ev, delta) {
var scrollTop = $(window).scrollTop();
$(window).scrollTop(scrollTop - Math.round(delta * 20));
});

As Baldráni said above
::-webkit-scrollbar { display: none; }
Or you can do
::-webkit-scrollbar{ width: 0px; }
(posted for other people that stumble on this from google search!)

Well, perhaps not the most intuitive in my opinion, but I can imagine you being able to make it a decent experience, give this a try.
overflow:hidden;
make sure the parent object has a height and width, and displays as block

hide scrollbar but able to scroll with mouse

I want to hide scrollbar to appear on a long div,but still able to scroll through mouse or keyboard arrow keys.I read another thread here about scrollable.Tried to use that..but could not implement that...could someone guide me how to implement that clearly or is there any other option with jquery or css?
Any help would be greatly appreciated.
Thanks

I'm not 100% sure on the browser compatibility of this, but you can have two div's - an outer div and a inner div. The inner div will have all your content. Your css could then look like this:
#outer {
width: 200px;
height: 200px;
overflow:hidden;
}
#inner {
height: 200px;
width: 225px;
overflow: scroll;
}
That is, the inner block would be wide enough to contain a scrollbar, but have it hidden from sight by the containing div. This worked for me in webkit. You might have to fiddle with the widths to make sure text doesn't get cut off.
That said, I would carefully think about WHY you're trying to do this. This could be a huge usability issue for your users, as they will not have any indication that there is more content within the div.

To do this is add the following css
.div::-webkit-scrollbar {
display: none;
}
This is saying that hey remove the display of the scroll bar but keep the functionality

Content jumps horizontally whenever browser adds a scrollbar

I'm using a fixed width body and auto margins to center my content in the middle of the page. When the content exceeds the page's height and the browser adds a scrollbar, the auto margins force the content to jump half the width of the scrollbar left.
Is comparing outerHeight with window.innerHeight an appropriate way of solving this? Is there another way to solve this?
I think this should be enough info for the problem, but let me know if I can answer anything else.
Edit for clarification: I don't want to force the scrollbar to appear.

I'll just leave this link here because it seems an elegant solution to me:
https://aykevl.nl/2014/09/fix-jumping-scrollbar
What he does is add this css:
#media screen and (min-width: 960px) {
html {
margin-left: calc(100vw - 100%);
margin-right: 0;
}
}
This will move the content to the left just the size of the scrollbar, so when it appears the content is already moved. This works for centered content with overflow: auto; applied to the html tag. The media query disables this for mobile phones, as its very obvious the difference in margin widths.
You can see an example here:
http://codepen.io/anon/pen/NPgbKP

I've run into this problem myself and I've found two ways to solve it:
Always force the scrollbar to be present:
body { overflow-y: scroll; } Setting it on the html doesn't work in all browsers or might give double scroll bars if the scrollbar does appear.
Add a class that adds ~30 pixels to the right margin of your page if there is no scrollbar.
I've chosen option 1 but I'm not sure if it works in all browsers (especially the older ones).
Facebook uses option 2.

Use this CSS:
body { overflow-y: scroll; }

You can force the scrollbar to always appear:
http://www.mediacollege.com/internet/css/scroll-always.html

The process is :
html {
overflow-y: scroll !important;
}
This will show the scrollbar even there no need any scroll bar.

Best possible way through CSS, It will show/hide Scrollbar accordingly, will
solve jump problem, works on every browser
html {
overflow: hidden;
}
body {
overflow-y: auto;
-webkit-overflow-scrolling:touch;
}

For me, the solution was to add this rule to the body:
body {
overflow-anchor: none;
}
This rule was added recently, and aims to reduce the variability of browsers having different default assumptions about how they should react to overflowing. Chrome, for example, has overflow anchoring enabled by default, whereas Firefox does not. Setting this property will force both browsers to behave the same way.
https://developer.mozilla.org/en-US/docs/Web/CSS/overflow-anchor

Always on top html block for iPhone

How can I create a DIV block that always stays at the bottom of my page? When scrolling more content should show up right above the block. The only solution i can think of is to use 2 iframes but I prefer using CSS.
Update: The solution needs to work on iOS

Here's some CSS:
.bottomFixed {
position:fixed;
bottom: 0;
/* technically not necessary, but helps to see */
background-color: yellow;
padding: 10px;
}
Here's some HTML:
<div class="bottomFixed">Hello, world!</div>
This div would be placed at the bottom of the screen and stay there. Note: this won't work on iOS because of the way it does scrolling.

div.bottom {
position:fixed;
}
Then just move it where you want. Unfortunately, browser support is limited. IE6 for example doesn't support this option for position. Also note that this removes the div from the flow, so you'll have to make sure there's enough space for the viewer to see stuff at the bottom of the page with the div on top.