readme

这是YUI的源码及相关示例。里面有很多很炫的Javascript效果。

*** version 2.6.0 ***

Fixed the following bugs:
-------------------------

+ Clicking on the option region of a Button of "type" split will fire the "option" event, but not
  "mousedown," "mouseup," "click," or "dblclick".

+ Buttons of type "radio" and "checkbox" will not override a value provided for the title attribute.

+ Returning false in an inline "submit" event handler for a form will now prevent the form
  from being submitted when the form contains Button instances.
  
+ Pressing the enter key to submit a form containing Button instances will no longer 
  trigger a beep sound in Internet Explorer.

+ The Button widget no longer logs errors when strict error reporting is enabled in FireFox.

+ Button instances are now automatically clicked when their corresponding <label> is clicked.

+ The name and value of selected MenuItems in submenus of a Button's Menu are now part of their
  parent form's data when the form is submitted.

+ For Button's of type "menu" and "split" created using an existing <SELECT> element: The name and 
  value of the pre-selected MenuItem in a Button's Menu are now part of their parent form's data 
  when the form is submitted.
	
+ The "appendTo" event now correctly fires when the "container" attribute is set to a 
  node reference.

+ Simple forms with two fields: a Button of type "submit" and a text field will no longer 
  be submitted twice when the enter key is pressed.

+ Submitting a form by pressing the enter key will now result in a Button's "click" event 
  handlers getting called.

+ Buttons of type "menu" and "split" now consistently display their Menus in Opera.

+ Button no longer logs a warning when a Button is created without an id.
  

Added the following features:
-----------------------------

+ Added a new "menumaxheight" attribute used to set the "maxheight" configuration property of a 
  Button's Menu.

+ Added a new "menuminscrollheight" attribute used to set the "minscrollheight" configuration 
  property of a Button's Menu.

+ Added a "menualignment" attribute attribute used to control how a Menu is aligned to its 
  corresponding Button.

+ Added a "yui-split-button-hoveroption" CSS class that is applied when the user hovers the mouse 
  over the "option" section of a split button.


Changes:
--------

+ Removed the rounded corners for IE 6 Quirks Mode and Strict Mode and IE 7 Quirks Mode.

+ Changed the keyboard shortcut used to display the Menu for Button's of type "split" to the down
  arrow key.

+ Passing a DOM element reference to the "container" attribute will no longer result in the Button 
  being appended to the container immediately.  Use the "appendTo" event to listen for when 
  the Button will be appended to the element specified as its container.  To append a Button to
  an element in the DOM immediately, use the "appendTo" method rather than the "container" 
  attribute.


*** Version 2.5.2 ***

Fixed the following bugs:
-------------------------

+ Button instances no longer flicker in Firefox 3 when their "label" attributed is updated.

+ Scrolled Menus of Buttons whose type attribute is set to "menu" or "split" no longer appear 
  on top of their corresponding Button instance.

+ The keyboard shortcut responsible for triggering the display of the Menu for Button instances of
  type "split" will no longer trigger the display of the browser's default context menu in Opera.



*** Version 2.5.1 ***

+ No changes.



*** Version 2.5.0 ***

+ Fixed issue where returning false inside the scope of a listener for attribute "before" 
  events (i.e "beforeCheckedChange") would not cancel the attribute's default setter.



*** Version 2.4.1 ***

+ No changes.



*** Version 2.4.0 ***

Added the following features:
-----------------------------

+ Added a static method "YAHOO.widget.Button.getButton" that returns a Button 
  instance with the specified HTML element id.


Fixed the following bugs:
-------------------------

+ Removed the ".yui-skin-sam" CSS class name from style rules in the core 
  stylesheet so that it is now truly skin agnostic.

+ Updated the default text for tooltips for Buttons of type "radio" so that 
  they offer the correct instructional text.

+ Menus with grouped YAHOO.widget.MenuItem instances will now highlight 
  correctly when used with Button.

+ Buttons of type "link" now have the same default height as other Button
  types in Internet Explorer.

+ Buttons of various types now line up correctly on the same line.

+ Menu is now truly an optional dependancy of Button.

+ Menus now render with the correct width when the "yui-skin-sam" CSS class 
  name is applied to an element other than the <BODY>.



*** Version 2.3.1 ***

Fixed the following bugs:
-------------------------
+ Purged the old 2.2.2 Button stylesheet and related image assets that was 
  mistakenly included in the 2.3.0 build.

+ Fixed an issue in Gecko where changing a Button instance's "label" attribute
  after the Button had been created would not result in the Button redrawing at
  a width to fit its content.
  
+ Fixed an issue where the singleton keypress event handler
  (YAHOO.widget.Button.onFormKeyPress) registered for forms containing
  Button instances of type "submit" was not removed from the form once all of 
  its child Button instances are destroyed.

+ Submitting a form by clicking on a MenuItem of a SplitButton's or MenuButton's
  Menu will no longer result in a JavaScript error.
  
+ Modified how element tag names are compared to support XHTML applications.

+ Added code to remove the CSS class names representing the "hover," "focus," 
  and "active" states when a Button instance is disabled.


*** Version 2.3 ***

Added the following features:
-----------------------------

+ Added a "focusmenu" configuration attribute that controls whether or not a 
  Button instance's menu will automatically be focused when made visible. 

+ Added a "lazyloadmenu" configuration attribute that controls the value of 
  the "lazyload" configuration property of a Button's menu.

+ Added "menuclassname" configuration attribute that defines a CSS class name
  to be applied to the root HTML element of a button's menu.


Fixed the following bugs:
-------------------------

+ Setting the "label" attribute of a Button of type "link" to a string with 
  a "www." prefix will no longer result in the value of the "href" property 
  being used for the "label" in IE.

+ Disabling a Button when its menu is visible will now result in the menu 
  being hidden.

+ Hidden field(s) created by a Button instance are now removed if the 
  submission of its parent form is cancelled.

+ If a Button instance is preceeded by another enabled HTML submit button 
  (<input type="submit" ...> or <button type="submit" ...>), it will no longer 
  create a hidden field representing its name and value when its parent form 
  is submitted.

+ If an HTML form contains a mix of YUI Buttons of type "submit" and standard 
  HTML submit buttons (<input type="submit" ...> or <button type="submit" ...>) 
  its "submit" event will no longer fire twice when it is submitted by the user 
  pressing the enter key while focus inside another HTML form control.

+ If all Button instances in a form are disabled, the form will no longer be 
  submitted when the user presses the enter key while focused inside another 
  HTML form control.

+ The first enabled Button instance in a form now correctly adds its name and 
  value to the form's data set when the form is submitted by the user pressing 
  the enter key while focused inside another form control.  

+ Fixed typo in the source file for the ButtonGroup class that was causing the 
  private variable "m_oButtons" to be declared as a global.

+ Switched to use of the CSS display type "-moz-inline-box" from 
  "-moz-inline-stack" for Gecko-based browsers so that the entire area of a 
  Button instance is clickable when it is rendered inside another inline 
  element.

+ Added "yui-button" and "yui-[button type]-button" prefix to CSS classes to