Summary

This is a preview release for jQuery UI 1.8. It is the first alpha release of the 1.8 series, not final or production-ready.

New Plugins

• Position
• Stackfix
• zIndex

Core

• added custom selectors for widgets, e.g., :ui-draggable (4266)
• widget factory auto detects getters (4411) (4601)
• all widget events are now lowercase (4668)
• plugin options now do a deep extend with defaults (4366)
• ui hash is always an object in callbacks/events now (4650)

Interactions

Draggable

• removed ui.absolutePosition in callbacks (3990)
• can now pass a string or array of x/y coordinates for cursorAt option (2525)

Droppable

• removed ui.absolutePosition in callbacks (3989)

Resizable

• disabling now works properly (4743)

Sortable

• connected, floated sortables work (4551)
• can now pass a string or array of x/y coordinates for cursorAt option (2525)
• supports nested sortables again (4611)

Widgets

Accordion

• fallback to a slide animation if an invalid easing is provided (also accept animated: true) (4392)
• fillSpace: true now accounts for header margins (4436)
• navigation option works again (4653)
• no longer stops propagation of clicks inside headers (4732)
• autoHeight now calculates height properly (4754)
• able to create an accordion without icons (4222)
• content no longer disappears in IE with autoHeight: false (4444)
• active property now updates to reflect current state (4576)

Datepicker

• able to properly pick dates in other months when showing multiple months (4634) (3657)
• manually entered dates now update the alt field (3861)
• iframe overlay for IE 6 z-index correction is now properly sized (4054)
• added showMonthAfterYear and yearSuffix options for i18n (4085)
• setDate can now be called multiple times (4647)
• added autoSize option to set the size of the input field based on the date format (3891)
• minDate getter now returns a value (4357)
• proper detection of prev/next links when displaying a grid of calendars (4536)
• fixed Hungarian localization (4556)
• fixed Italian localization (4599)
• input id can now contain $ (4684)

Dialog

• dialogs now remember their position after drag (4679)
• can now pass a hash for position (2525)
• when height is set to a pixel value smaller than the minHeight, the height will override the minHeight (4101) (4101)
• buttons no longer disappear after dragging (4271)
• now triggers drag and resize events (4629)
• resizing is now constrained to the document (4664)
• beforeclose option changed to beforeClose (4669)

Slider

• canceling the slide event now actually cancels the slide (4751)

Tabs

• Fixed styling for multiple rows of tabs (4399)

Effects

• effects now honor jQuery.fx.off (4328)
• toggleClass now works consistently in IE (4676)
• show/hide now work properly on elements with opacity (4274)
• callback is now named "complete" not "callback" (4586)
• morph was removed (4602)
• toggleClass now supports switch boolean parameter (4722)