Transitions

Page transitions

The jQuery Mobile framework includes a set of CSS-based transition effects that can be applied to any page link or form submission with Ajax navigation:

fade	dialog	page
pop	dialog	page
flip	dialog	page
turn	dialog	page
flow	dialog	page
slidefade	dialog	page
slide	dialog	page
slideup	dialog	page
slidedown	dialog	page
none	dialog	page

Only seeing fade transitions? To view all transition types, you must be on a browser that supports 3D transforms. By default, devices that lack 3D support (such as Android 2.x) will fallback to "fade" for all transition types. This behavior is configurable (see below).

Transitions were originally inspired by jQtouch They've since been rebuilt, but props to David Kaneda and Jonathan Stark for the initial guidance.

Setting a transition on a link or form submit

By default, the framework applies a fade transition. To set a custom transition effect, add the data-transition attribute to the link.

<a href="index.html" data-transition="pop">I'll pop</a>

When the Back button is pressed, the framework will automatically apply the reverse version of the transition that was used to show the page. To specify that the reverse version of a transition should be used, add the data-direction="reverse" attribute to a link.

Global configuration of transitions

Set the defaultPageTransition global option if you'd prefer a different default transition. Dialogs have a different option called defaultDialogTransition that can also be configured.

Browser support and performance

All transitions are built with CSS keyframe animations and include both -webkit vendor prefixed rules for iOS, Blackberry, Android, Safari and Chrome browsers and -moz rules for Firefox browsers. Support for keyframe animations and transition smoothness is determined by the browser version and hardware and will safely fall back to no transition if animations aren't supported. To proactively exclude transition in situations with poor performance, we exclude browsers that lack 3D transforms and provide a fallback transition and apply a max width for when transitions are applied.

Defining fallback transitions for non-3D support

By default, all transitions except fade require 3D transform support. Devices that lack 3D support will fall back to a fade transition, regardless of the transition specified. We do this to proactively exclude poorly-performing platforms like Android 2.x from advanced transitions and ensure they still have a smooth experience. Note that there are platforms such as Android 3.0 that technically support 3D transforms, but still have poor animation performance so this won't guarantee that every browser will be 100% flicker-free but we try to target this responsibly.

The fallback transition for browsers that don't support 3D transforms can be configured for each transition type, but by default we specify "fade" as the fallback. For example, this will set the fallback transition for the slideout transition to "none":

$.mobile.transitionFallbacks.slideout = "none"

Setting a max scroll for transitions

By default, transitions are disabled (set to "none") when you’re either coming FROM or going TO a page where the scroll position is 3x the height of the device’s screen. This feature was added because of the slow response times and the possibility of browser crashing when clicking on a list item (or any navigation element) far down a long page which leads to the browser trying to animate a really massively tall page from the scroll position to the top of the screen. The scroll position, not total screen height, is the determining factor for performance. This scroll position breakpoint is configurable via the new getMaxScrollForTransition function.

Setting a max width for transitions

By default, transitions can be disabled (set to "none") when the window width is greater than a certain pixel width. This feature is useful because transitions can be distracting or perform poorly on larger screens. This value is configurable via the global option $.mobile.maxTransitionWidth, which defaults to false. The option accepts any number representing a pixel width or false value. If it's not false, the handler will use a "none" transition when the window width is wider than the specified value.

Creating custom transitions

jQuery Mobile allows for the addition of custom transitions to the $.mobile.transitionHandlers dictionary so you can expand the selection of transitions on your site or app.