http://extjs.com/deploy/ext-2.0.zip

不过下下来的DOC一直打不开，Loading……(多谢A1在留言里说：DOC里的文档是使用xmlhttp载入的，不能在本地访问)

//==========================================
// Ext JS Release Notes
//==========================================
// Release Date: December 3, 2007
// Current Version: 2.0 (rev 1450)
// Previous Version: 2.0 RC-1 (rev 1372)
//==========================================

===== Added =====
none

===== Removed =====
none

===== Modified =====
src/core/
    Element
        - Added null check in getAlignToXY
        - Fixed bug parsing certain color codes in getColor
        - Doc updates
    EventManager
        - Fixed getTarget to honor the returnEl argument when a selector is not passed in
       
src/dd/
    DDCore
        - Fix  in constrainTo to include tickSize in constraint calcs

src/util/
    Date - Fix in formatCodeToRegex to use Ext.escapeRe in the default case
   
src/widgets/
    Button
        - Fixed DOM clean up issue on destroy
        - Doc updates
    Component
        - Moved state init logic after plugins are loaded in the constructor
        - Doc updates
    DataView
        - Internal fix to updateIndexes
    Panel
        - Fixed missing semi-colon in button tool spacer text ( )
        - Added logic in onDestroy to clean up any buttons
        - Doc updates
    TabPanel
        - Internal fixes for activating only on tab change
        - Doc updates
    Window
        - Fixed DOM clean up issue on destroy
        - Doc updates
   
src/widgets/form/
    BasicForm
        - Fixed DOM clean up issue on destroy
        - Doc updates
    Checkbox
        - Added onDestroy to clean up wrap element
        - Doc updates
    CycleButton
        - Fix to skip disabled options on cycle click
    FieldSet
        - Fix to apply an id to the fieldset if specified
        - Fix to apply this.id to the fieldset element on render
        - Doc updates
    FormPanel
        - Added beforeDestroy to clean up inner BasicForm
        - Doc updates

src/widgets/layout/
    AnchorLayout - Fixed width/height typo
    ContainerLayout
        - Fixed issue when passing null into setContainer
        - Fixed null error in isValidParent from not checking for positionEl
    TableLayout - Fixed issues with complex spanning

src/widgets/tips/
    QuickTip - Fixed bug with error tip style overriding normal style

src/widgets/tree/
    TreePanel
        - Renamed events nodemove and beforemove to movenode and beforemovenode
        - Doc updates
   
===== Doc updates only =====
src/core/
    Fx
    Updater

src/data/
    ArrayReader
    Connection
    DataReader
    HttpProxy
    JsonReader
    JsonStore
    Record
    ScriptTagProxy
    Store
    XmlReader

src/util/
    KeyMap
    MixedCollection
    Observable

src/widgets/
    ComponentMgr
    Container
    GridPanel
    PanelDD (internal docs added)
    Toolbar
    Viewport
    WindowManager

src/widgets/form/
    Action
    TriggerField

src/widgets/grid/
    CellSelectionModel
    ColumnModel
    EditorGrid
    GridPanel
    GroupingView

src/widgets/layout/
    FormLayout
   
src/widgets/tips/
    QuickTips