Develop Reference

Hide toolbar on mobile browser

I'm working on my responsive website and I'm trying to hide the address bar and toolbar of mobile browsers.
On this picture, you can see which zone I'm trying to hide (red mark)
So as I've seen when I scroll on my mobile this automatically disappear.
What I'm trying to do is once the document is ready to do an auto scroll. Something like this:
$('html, body').animate({
scrollTop: $("#id").offset().top
}, 2000);
This element is practically on the bottom of the website but still don't hide the toolbar of the web browser.
Is there any way to hide it?
EDIT: I've to clarify that this is not on my website, i'm trying to hide de footer of practically all browsers, i know that this is not possible beacause is on client side, but i'm trying to do a "trick" to hide it. I know that when i use my mobile i open safari and i navegate there is a footer to open a new tab or close it etc... But when i scroll down on a website this one disappear, so this is what i'm trying to do. Create an automatically scroll down to make it disappear... But this is not actually running

The only way I can think to solve this would be to use the Fullscreen API as described here.
For example:
// Covering all browsers that support this
var docEl = document.documentElement;
var requestFullScreen = docEl.requestFullscreen || docEl.mozRequestFullScreen || docEl.webkitRequestFullScreen || docEl.msRequestFullscreen;
var cancelFullScreen = doc.exitFullscreen || doc.mozCancelFullScreen || doc.webkitExitFullscreen || doc.msExitFullscreen;
// Execute the variable on initalization
requestFullScreen.call(docEl);

use Jquery to add a CSS and display it as none
if(condition that you want){
$(.'your-menu').css({'display':'none'});
}

Disable touch swipe on fullpage.js

I'm using the fullpage.js plugin for a single page marketing site.
I'm using navigation links to jump to scenes (all horizontal) around the site so I want to disable to the touch/swipe (between scenes) feature as it interferes with other touch elements.
I've been though all the documentation but I can't find out how to achieve this.
Any help is welcome. Thanks, Jack.

Just use the option autoScrolling:false when initializing the plugin. This way the mouse wheel won't swipe and neither the touch events will.
If you want to keep the mouse wheel scrolling (for computers) but disable the touch events (touch devices), then I would recommend you to initialize the plugin in a different way for touch devices.
In order to do so, I recommend you to do something like this.
Update 2016:
You can use the options responsiveWidth or responsiveHeight as well as the class fp-auto-height-responsive.
The options will disable the autoScrolling feature for mobile devices under the specified dimensions. Examples available in the examples folder of fullPage.js or online.
You can also use responsiveSlides and force the transformation of horizontal slides into vertical sections on responsive. This can be done through the Responsive Slides extension.
Update Sep-2014:
A method named $.fn.fullpage.setAllowScrolling can also be used with this same purpose. It will disable both the touch scrolling and the mouse scrolling.
Update Jun-2014:
autoScrolling:false only disables the vertical scrolling.
If you want also to disable the horizontal one, there's no way to do it right now. You would need to modify a bit the plugin.
Inside fullpage.js replaces this:
function removeTouchHandler() {
if (isTablet) {
$(document).off('touchstart MSPointerDown');
$(document).off('touchmove MSPointerMove');
}
}
For this:
$.fn.fullpage.removeTouchHandler = function (){
if (isTablet) {
$(document).off('touchstart MSPointerDown');
$(document).off('touchmove MSPointerMove');
}
};
And then, when you initialize the plugin, call that public function in the afterRender callback like so:
$(document).ready(function() {
$('#fullpage').fullpage({
afterRender: function(){
$.fn.fullpage.removeTouchHandler();
}
});
});
Don't call fullpage twice. Just add the afterRender function inside your initialization.

The setAllowScrolling function also accepts a second argument for directions so the following can be used to disable left/right scrolling/swiping:
$.fn.fullpage.setAllowScrolling(false, 'left, right');

As of June 2017, none of the previous methods worked for me. The simplest way I found to effectively disable touch is as follows.
In jquery.fullPage.js you will find the function setAllowScrolling
function setAllowScrolling(value, directions){
if(typeof directions !== 'undefined'){
directions = directions.replace(/ /g,'').split(',');
$.each(directions, function (index, direction){
setIsScrollAllowed(value, direction, 'm');
});
}
else if(value){
setMouseWheelScrolling(true);
addTouchHandler();
}else{
setMouseWheelScrolling(false);
removeTouchHandler();
}
}
When fullpage is initialized it automatically calls setAllowScrolling(true), triggering the else if(value) condition above. Simply comment out the call to addTouchHandler() to fully disable it, or add some sort of condition for it to be called, eg
var winw = $(window).width();
if (winw > 480){
addTouchHandler();
}
With this method the left and right arrows still work when tapped, so horizontal slides can still be navigated. It should be noted that using $.fn.fullpage.setAllowScrolling(false, 'left, right'); will also disable the arrows.

Toggling marginTop without making an element disappear

I've thrown together a cool little script that will make my search box appear using jQuery UI. However, there are links above the search box that must move up at the same speed as well. For this, the margin-top must be adjusted, but by toggling the margin-top, it seems it is disappearing.
Does anyone know how I can toggle the margin-top without making the links disappear AND keep the speed as close as possible to the other one?
$(document).ready(function() {
$('.pwcustomsearch').hide();
$("#pwcustomsearchlink").click(function () {
var effect = 'slide';
var options = { direction: 'down' };
var duration = 400;
$('.pwcustomsearch').toggle(effect, options, duration);
$('.social-media').toggle({"marginTop": "15px"});
})
});
Here is a fiddle:
http://jsfiddle.net/hcmLw/1030/

.toggle() is adding display:none as an inline style to your element, therefore it disappears.
Use .animate() instead to change the top margin.
See my updated fiddle here: http://jsfiddle.net/hcmLw/1032/
EDIT: Updated the fiddle again to make the toggling work properly.

Scroll to link with skrollr

I am using https://github.com/Prinzhorn/skrollr to animate the background of my site as I scroll. However I am also wanting to have my links scroll up and down the page like a normal single page site would do.
The problem is that both are working if I manually scroll the background changes, if I click the link the page scrolls to the correct place. The problem is that when I click the button the background doesn't scroll as well.
It seems like I am working with two different scroll functions and as a result they aren't working together and I need to use the same one.
Here is the code.
js - Scroll to link:
var $root = $('html, body');
$('a').click(function() {
var href = $.attr(this, 'href');
$root.animate({
scrollTop: $(href).offset().top
}, 500, function () {
window.location.hash = href;
});
return false;
});
js – Skrollr init
skrollr.init({
smoothScrolling: true,
forceHeight: true
});
I will try put together a fiddle to make it more clear but hopefully the answer is really simple.

If anyone else ever faces this problem the answer lies her: https://github.com/Prinzhorn/skrollr-menu
This will allow you to scroll to you internal links along with Skrollr animations. A HUGE plus and a very simple fix, you don't even need any of your own scrolling code just this and it will work with you links.

There's a way to do this, Skrollr has some methods very useful, in console, just type the variable contains skrollr, it will show some methods that you can use, one of them is "setScrollTop(int, bool)", so just call this method with the info you need, for example:
s.setScrollTop(9000, true)
Which means that I want it to scroll to the height position 9000. It works fine, you just need to know the height position where you need to go.

How do I remove Bootstrap Affix from an element under certain conditions?

I have an element where I'm using the Twitter Bootstrap Affix plugin. If the window gets vertically resized to the point where it is smaller than the height of the item, I'd like to remove the affix functionality from the element since you wouldn't be able to see all of it in the window.
So far I've tried this in the console just to see if it can be removed, but it doesn't seem to be working.
$("#myElement")
.removeClass("affix affix-top affix-bottom")
.removeData("affix");
$(window)
.off("scroll.affix.data-api, click.affix.data-api");
Maybe I'm going about this the wrong way? How Can I programmatically remove the affix from an element that already had it applied?

I ended up going for a mostly CSS solution, similar to what #Marcin Skórzewski suggested.
This just adds a new class when the height of the window is shorter than the height of the element.
var sizeTimer;
$(window).on("resize", function() {
clearTimeout(sizeTimer);
sizeTimer = setTimeout(function() {
var isWindowTallEnough = $overviewContainer.height() + 20 < $(window).height();
if (isWindowTallEnough) {
$overviewContainer.removeClass("affix-force-top");
} else {
$overviewContainer.addClass("affix-force-top");
}
}, 300);
});
And then in CSS, this class just gets added:
.affix-force-top{
position:absolute !important;
top:auto !important;
bottom:auto !important;
}
EDIT
For bootstrap 3, this seems to be effective:
$(window).off('.affix');
$("#my-element")
.removeClass("affix affix-top affix-bottom")
.removeData("bs.affix");

Deprecated: Answer refers to Twitter Bootstrap v2. Current version is v4.
There are few options to try.
Use function for data-offset-top. Normally, you use the integer value, for number of scrolled pixels to fix the element. According to documentation you can use the JS function, that will calculate the offset dynamically. In this case you can make your function to return different number depending on the conditions of your choice.
Use media query to override affix CSS rule for small window (eg. height 200px or less).
I think, the second variant should be suitable for you. Something like:
#media (max-height: 200px) {
.affix {
position: static;
}
}
If you would provide jsfiddle for your problem others could try to actually solve it, instead of giving just theoretical suggestion, that may or may not work.
PS. Bootstrap's navbar component uses media query for max-width to disable fixed style for small devices. It is good to do that not just because the screen size is to small for navbar, but in mobile devices position: fixed; CSS works really ugly. Take w look at navbar inside the bootstrap-responsive.css file.

Your $(window).off is close, according to #fat (author of bootstrap-affix.js) you can disable the plugin like this:
$(window).off('.affix');
That will disable the affix plugin.
See: https://github.com/twitter/bootstrap/issues/5870

On line 1890 of bootstrap is a conditional for whether the default action should be prevented. This allows your to listen for events and if some condition is met, prevent the affix from happening.
line 1890 from bootstrap:
if (e.isDefaultPrevented()) return
Example:
$('someselector')
.affix()
.on(
'affix.bs.affix affix-top.bs.affix affix-bottom.bs.affix'
, function(evt){
if(/* some condition */){
evt.preventDefault();
}
}
);

Even though this was answered, I just wanted to give my solution for this in case someone ran into a similar situation as mine.
I modified the offset top option to a ridiculous number that would never get scrolled to. This made it so I did not have to do $(window).off('.affix'); and disable affix for everything.
$('#element-id').data('bs.affix').options.offset.top = 1000000000;