Develop Reference

Can I expand a div so the overflow-y:auto scrollbar doesn't clip the div content?

Similar question, without a great answer:
How can I include the width of "overflow: auto;" scrollbars in a dynamically sized absolute div?
I have a <div> of fixed height that acts as a menu of buttons of uniform width. Users can add/remove buttons from the menu. When there are more buttons than can fit vertically in the <div>, I want it to become scrollable - so I'm using overflow-y:auto, which indeed adds a scrollbar when the content is too large in y. Unfortunately, when the scrollbar shows up it overlaps the menu buttons, and adds a horizontal scroll bar as a result - the big problem is it just looks horrible.
Is there a "right" way to fix this? I'd love to learn some style trick to make it work right (i.e. the scrollbar sits outside the div rather than inside, or the div automatically expands to accommodate the scroll bar when necessary). If javascript is necessary, that's fine - I'm already using jQuery - in that case, what are the right events are to detect the scrollbar being added/removed, and how do I make sure to use the correct width in a cross-browser/cross-style way?
JSFiddle: http://jsfiddle.net/vAsdJ/
HTML:
<button type="button" id="add">Add a button!</button>
<div id="menu">
</div>
CSS:
#menu{
background:grey;
height:150px;
overflow-y:auto;
float:left;
}
Script:
$('#add').button().click(function(){
var d = $('<div/>');
var b = $('<button type="button">Test</button>');
d.appendTo($('#menu'));
b.button().appendTo(d);
});

First: To remove the horizontal scrollbar set overflow-x: hidden; as Trent Stewart has already mentioned in another answer.
CSS Approach:
One thing I have done in the past is to add a wider wrapping div around the content div to make room for the scrollbar. This, however, only works if your container width is fixed... and may need to be adjusted (by serving different styles) in various browsers due to variable rendering of scrollbars.
Here a jsfiddle for your case. Note the new wrapper <div id="menu-wrap"> and its fixed width width: 95px;. In this case the wrapper div is doing the scrolling.
You could probably also solve this by giving the wrapper some padding on the right, and thereby avoid the fixed width problem.
jQuery Approach:
Another option is to detect the overflow using jquery as described here, and then increasing the width or padding of the div to make space. You may still have to make browser-specific adjustments though.
Here a jsfiddle with a simplified version for your example. This uses your click function to check the div height after every click, and then adds some padding to make room for the scrollbar; a basic comparison between innerHeight and scrollHeight:
if($('#menu').innerHeight() < $('#menu')[0].scrollHeight){
$('#menu').css( "padding", "0 15px 0 0" );
}
To make this more cross-browser friendly you could check for the scrollbar width (as outlined here) and then add the returned value instead of the fixed padding. Here another jsfiddle to demonstrate.
There are probably many other methods, but this is how I would go about it.

Have you tried simply using overflow-x: visible; or hidden

Calculating exact window height using jQuery

So I am redesigning my website: http://staging.slackrmedia.com/keenanpayne/, but I am coming across a small issue. I want each "pane" of the website to be the exact height of the window, no matter what the size. I also want the content therein to be exactly positioned in the center.
I am trying to accomplish this with jQuery at the moment:
function setSectionHeight() {
// Set section heights
windowHeightPadding = $(window).height() / 2;
firstSectionPadding = ($(window).height() - $('header').height()) / 2;
// Apply proper styling
$('section').css({"padding-top":windowHeightPadding,"padding-bottom":windowHeightPadding});
$('section.home').css({"padding-top": firstSectionPadding,"padding-bottom":windowHeightPadding});
}
setSectionHeight();
// Adjust section heights on window resize
$(window).on('resize', function(){
setSectionHeight();
});
So what this is doing is calculating the window height and dividing it by 2, so I can set the top and bottom padding on each section.
However, for the first section, to get the proper top and bottom padding, I need to subtract the height of the header, which is why I have a firstSectionPadding variable.
Then I just add the CSS to each section tag on my website, with separate styling for the home section tag.
This works pretty well, but as you can see when you visit my site, for some reason the heights are not correct.
Right now it looks like:
And it should look like:
I have absolutely no idea where this extra padding or space is coming from on the top. I think my equations are right, but perhaps there isn't something I'm taking into consideration?

This could be done with CSS. One div set to 100% height and width, with text-align:center; A second div within set to display:table and 100% height and width. Finally, a third div set to display:table-cell and vertical-align:center;

Vertical alignment for the page to 100% of height

I have page http://inspire.mobi/how, where it is aligned horizontally well ut it is not properly aligned vertically.
For this page http://inspire.mobi/how, there are 2 divs ( having css classes mainHow & botHow) in the body part. Both these divs are in one main div "mainHow" whose height is calculated using javascript (wondow.height- footerheight-headerheight). Internal 2 divs (having css classes mainHow & botHow) are 75% & 25% of the main div "mainHow". But it is not covering full height. When i zommin & zoom out the page (not 100% page size), it is creating too much part leftout below "bothow" div.
Please help me on this.

I had a look at this site and i can see a few errors that might be causing it.
Your divs mainHow & botHow, height are adding up to 105%.
In your javascript that you have set up to work out .container height, your footer height that you have hardcoded is set to 110px, im seeing the footer hieght as 91px, so you will have a gap there. If you fixed this, it should be the full size. If im understanding the question right

Javascript needed to fill remaining height space between content and footer

How can I set a "spacer" div to fill remaining height space between CONTENT and FOOTER, so footer will be always at the bottom of the page (not window as originally asked)?
Here is a example where footer is not at the window's bottom: http://template1.staceyapp.com/ (I'm using this template, so structure is the same).
I've tried many things like creating a div and setting it to be min-height, height 100% etc.
Probably Javascript is needed for that.
Are you able to help me setting jQuery to calculate it's height to fill the remaining space?
Is there a better solution?
Many thanks in advance,
Graxa

You can use CSS to position the footer at the bottom of the page.
by using position: fixed or if the footer is contained within another div (container)
set the position of that to relative and the position of your footer to absolute and then specify bottom: 0; for your footer to keep it locked to the bottom of the page.

It sounds like you want a sticky footer, which sits at the bottom of the browser window or at the bottom of the content, whichever happens to be longer.
If that's true, check out: http://ryanfait.com/sticky-footer/

Have you tried to set the footer just to position:fixed on the bottom?

Set an element height via CSS or JavaScript/JQuery

This should be simple but nothing's working:
Question
How do you set the height of a webpage to be, lets say, exactly 4000 pixels—in such a way that scroll bars exist even when the page is blank?
Background
I'm new to JavaScript/JQuery but very experienced with similar technologies. I'm trying to do some fancy effects based on scrolling the page. To accomplish this methodically, as a first step I'm looking to make a "really tall" page. From there I will hide/display items based on the scroll height with pseudo-code along the lines of:
function onScrollEvent() {
var height = scroll height
var sectionIndex = Math.floor(height / MAX_SECTION_HEIGHT);
for each item in my array of graphics
if item index != sectionIndex then item.fadeOut else item.fadeIn
}
Once I have that working, I'll start creating the effects I want to see. The problem is, I can't make the stupid page "really tall."
Summary
When I set the height style property of the main-content div, it doesn't seem to trigger scroll bars unless there's actual content on the page. How do I make the page "permanently tall," so to speak? That is, I want the page to behave (scroll) as though it has 4000 pixels of content even if there's only one line of text on the page. Right now it behaves as though there's a call to:
height = Math.min(height of contents, height of div style)

Have you tried min-height for body, or html tags? min-height requires the element to be at least that height regardless of the content contained.
CSS
html, body{
min-height: 4000px;
}
Live Demo
Reference

Easy in CSS:
body
{
height: 4000px;
}
Example here.
This is the simplest way. min-height is not supported by all browsers. This is a specific height that you can set to the body tag (essentially the webpage itself) to make it really tall.

In your CSS add:
body
{
min-height: 4000px;
}
And you'll also need:
body
{
height: 4000px;
}
for internet explorer (via IE's conditional comments).

In Chrome 10, on OSX 10.6 -- this renders a complete blank page with scroll on the Y axis, hope this is how you meant:
http://pastie.org/1674432