Zepto.js 1.2.0

On top of all the bug fixes found in v1.1.7, this release also brings new features and some slightly backwards-incompatible changes made to ensure better parity with jQuery.

Large changes:

• Eliminate __proto__ use from codebase.
• Enable AMD-compatible module output. Zepto and $ are still exported to global namespace, even in the case of module loader, to keep compatibility with plugins.

New functionality:

• Add $.noop
• Add fn.removeProp()
• Add $.isNumeric()
• Add dataFilter ajax option
• Provide $.data() & $.hasData() in optional "data" module
• Add Firefox OS detection

jQuery compatibility:

• Stop falling back to reading properties in fn.attr()
• fn.attr() now returns undefined for non-existing properties instead of null
• Add document fragment/shadow DOM support

Zepto.js 1.1.7

DOM:

• Fix fn.closest() on collections of multiple elements
• text() returns text from all matching selectors
• Fix offset() on documentElement
• Use the standard API for CSS selector matches
• append() now accepts array of DOM nodes
• Add multi-window support for embedded scripts
• Fix css() batch setting on non-existing element
• Convert null/undefined into "" in fn.val() for jQuery compatibility
• Improve detection of array-like objects

Ajax:

• Fix appending ajax params to URLs that have a hash component
• Add ajax support for receiving binary data
• Sufficiently randomize JSONP callback names
• Fix assigning query params from data with explicit JSONP

Cross-browser:

• Avoid IE10 error by checking if element is in the DOM before calling getBoundingClientRect
• Added support for pseudo-elements in IE getComputedStyle shim
• Fix use of ajax xhrFields on Android 2.3 and Windows Mobile
• Fx: avoid using vendor prefixes if unprefixed is supported

Misc.:

• Fix dasherize bug in fx module
• Fix swipe event of touch module
• Avoid exception in doubleTap
• Accept function as data for on event handler
• Populate event.timeStamp if it's 0 or missing

Zepto.js 1.1.6

• Fix crossDomain detection in $.ajax with regard to IE's treatment of port numbers

Zepto.js 1.1.5

Many serialization improvements:

• Don't serialize form fields without a name attribute
• Don't try to serialize <input type=file>
• Fix serializing <select multiple> values
• Fix serialize()/serializeArray() on empty Zepto collections
• Serialize null values as empty strings in $.param()
• Support functions as values in $.param()
• Only deserialize number from data-* attributes if that doesn't change its string representation

Other fixes:

• Improve detection of whether an $.ajax request is crossDomain or not
• Fix find(falsey) to return an empty Zepto collection instead of an empty Array
• Fix css() on empty Zepto collection causing exceptions when "ie" module is not included
• Ensure that $.animate completion callback doesn't fire prematurely if the animation is configured with a delay
• Actually focus() & blur() elements when these events are manually triggered
• Fix installing auto-cancelling event handlers with shorthands such as submit(false), click(false)
• Prevent removeClass/addClass from affecting window objects
• Enable removeAttr to remove space separated list
• Ensure recognition of Safari on Windows

Zepto.js 1.1.4

• Detect IE 11, Windows Phone, Safari on OS X
• .find() with falsy values now returns an empty array
• Fix how .attr('value') and .val() interact on <input> (#939)
• Have .text() accept a function argument
• Make .text(undefined) assign an empty string
• Do not eval <script> tags if parent element is not in the DOM
• Second argument to .attr/prop/data() is always a setter, even if undefined
• $.proxy() now accepts additional arguments
• $.ajax() uses HTTP cache-busting parameter for dataType: jsonp/script by default
• Fix $.contains and related features on Firefox 4 – 8.0

Zepto 1.1.3

• Fix automatic parsing of JSON responses in $.get/post
• Don't falsely detect requests to URLs such as /foo=?a=b to be JSONP requests; the = is part of the request path in this case
• Use native Array.isArray if available
• Update to Uglify v2, saving ~1.6 kB in minified version

✨ 🌟 Download Zepto.js 🌟 ✨

Zepto 1.1.2

• Enabled xhr.setRequestHeader() in beforeSend Ajax handler

Zepto 1.1.1

• Make sure to properly patch the Zepto object in IE, not any global $ object.

Zepto 1.1

Notable changes

• IE10+ support
• Huge speed optimizations for simple CSS selectors (classname, ID) and DOM element creation
• Provide $.Callbacks and $.Deferred in optional modules
• Removed fx and detect modules from default build

Download Zepto.js:

• zepto.js – 53.2k uncompressed with comments
• zepto.min.js – 9.2k when gzipped

Ajax

• New supported $.ajax() options:
  • xhrFields
  • mimeType
  • jsonpCallback
  • username & password
• Promise interface supported when loading the optional "callbacks" and "deferred" modules:
  • xhr.done(function(data, status, xhr){ ... })
  • xhr.fail(function(xhr, errorType, error){ ... })
  • xhr.always(function(){ ... })
• Enable mutating Ajax settings in the beforeSend callback
• Fix JSONP callbacks for errored responses on Android
• Ensure consistent Accept request HTTP header across browsers
• Fix $.param() for jQuery compatibility when handling complex nested objects
• Support IIS JavaScript MIME type
• Pass "abort" and "timeout" status to global ajaxError event handlers

Event

• Provide isDefaultPrevented(), stopImmediatePropagation(), and related methods for all events
• Support the data argument in .bind(), .on(), and .one()
• Support CSS selector argument in .one() for event delegation
• Support .on('ready') as an alias for .ready()
• Enable event handlers on plain old JS objects
• Many fixes related to event delegation

Data

• Cleanup .data() values on DOM element removal with .remove/empty()
• .data() now assumes that numbers that begin with zeroes are strings
• .removeData() (no argument) now removes all data on the element
• Enable reading data-* attributes that have underscores in the name

Misc.

• Support simple DOM property names in .prop(name) such as for, class, readonly…
• Implement the .scrollLeft([value]) method
• Support setting .scrollTop(value)
• Fix $(document).width/height()
• Support fetching multiple CSS values via array in .css(['prop1', 'prop2', ...])
• Support setting CSS transition delay via delay option for .animate()
• Ensure that .animate() callback always fires

Zepto 1.0.0

Party like it's one-oh!

Notable changes

• Zepto is now compatible with Twitter Bootstrap
• Portable, completely new node.js-based build system
• Fully automated tests with PhantomJS and Travis CI
• Removed touch module from default distribution

New features

• $.fn.filter(function(index){ ... })
• $.fn.contents()
• $.fn.wrapInner()
• $.fn.scrollTop()
• $.contains()
• $.fn.has()
• $.fn.position()
• $.fn.offsetParent()
• $.parseJSON()
• $.camelCase()
• $.isWindow()
• $.grep() (interface to Array.filter)
• Support $(html, attributes) syntax for element creation
• Emulate mouseenter and mouseleave events
• Bootstrap compat: support $.fn.offset(coordinates)
• Bootstrap compat: implement $.fn.detach()
• Add support for Ajax cache: false option
• Prevent scrolling when horizontal swipe events are detected
• cancelTouch for tap events
• prev and next now support an optional selector argument
• $.fn.find and $.fn.closest now support Zepto objects as arguments
• Enable deep copy via $.extend(true, target, source)
• Enable nested structures for $.fn.wrap() and $.fn.wrapAll()
• Enable function arguments for $.fn.wrap() and $.fn.wrapInner()
• Support number, boolean, JSON types in data attributes
• Support manipulating classnames on SVG elements
• Enable named durations for animate, e.g. slow.
• Support timing-function for animate
• Support event properties passed to $.fn.trigger() or $.Event()
• Selector module: support child > * queries
• Add detect support for mobile Chrome browser
• Add $.os.phone and $.os.tablet (booleans)
• Detect Firefox mobile, Playbooks and BB10

Fixes

• Fix passing null selector to on or off
• Fixed bug where self-closing html tags would act as open tags
• Fix val for multiple select
• Fix various touch and gesture bugs.
• Corrected parameters of load success callback to match jQuery.
• Fix css with 0 values and falsy values
• Fix a css performance issues with string values
• Fix $.ajaxJSONP when invoked directly
• Fix animate with 0 durations.
• Fix toggle and fadeToggle for multiple elements.
• Fix ajax $.fn.load behavior with selector
• Make attr(name, null) unset attribute
• Fix animate in Firefox
• Fix animate for elements just added to DOM
• Fix an escaping issue with $.param
• Respect traditional: true option in $.ajax
• Fix focus & blur event delegation and enable unbind
• Simple wrapping for any object passed to $()
• Enable children method for XML documents
• Don't eval <script> content when src is present
• Support processData option for $.ajax()
• Enable passing contentType: false to $.ajax()
• Apply focus() and blur() to all elements in collection
• Change $.fn.map() to return a Zepto collection
• Selector argument for on(evt, selector, fn) can be false
• Don't raise error on $('#')
• Provide empty object in $.support
• return false in event handler calls stopPropagation()
• Fix $.isPlainObject() for window in Opera
• $.ajax error callback correctly reports abort status
• Fix hasClass in collections of multiple elements
• Stop iteration in each() when the callback returns false
• Add ability to set xhr factory per-request
• Have get() method accept negative index
• Support for multiple class names in toggleClass()
• Fix error callbacks for ajaxJSONP
• Support optional data argument for various Ajax methods
• Fix DOM insertion operators for null values
• Fix dataType being set for $.getJSON