extjs 如何获取 xtype属性 如果分情况的话 麻烦都列一下 还有xtype 属性都有哪些值

xtype Class
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box Ext.BoxComponent
button Ext.Button
colorpalette Ext.ColorPalette
component Ext.Component
container Ext.Container
cycle Ext.CycleButton
dataview Ext.DataView
datepicker Ext.DatePicker
editor Ext.Editor
editorgrid Ext.grid.EditorGridPanel
grid Ext.grid.GridPanel
paging Ext.PagingToolbar
panel Ext.Panel
progress Ext.ProgressBar
propertygrid Ext.grid.PropertyGrid
slider Ext.Slider
splitbutton Ext.SplitButton
statusbar Ext.StatusBar
tabpanel Ext.TabPanel
treepanel Ext.tree.TreePanel
viewport Ext.Viewport
window Ext.Window

Toolbar components
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toolbar Ext.Toolbar
tbbutton Ext.Toolbar.Button
tbfill Ext.Toolbar.Fill
tbitem Ext.Toolbar.Item
tbseparator Ext.Toolbar.Separator
tbspacer Ext.Toolbar.Spacer
tbsplit Ext.Toolbar.SplitButton
tbtext Ext.Toolbar.TextItem

Form components
---------------------------------------
form Ext.FormPanel
checkbox Ext.form.Checkbox
combo Ext.form.ComboBox
datefield Ext.form.DateField
field Ext.form.Field
fieldset Ext.form.FieldSet
hidden Ext.form.Hidden
htmleditor Ext.form.HtmlEditor
label Ext.form.Label
numberfield Ext.form.NumberField
radio Ext.form.Radio
textarea Ext.form.TextArea
textfield Ext.form.TextField
timefield Ext.form.TimeField
trigger Ext.form.TriggerField

以上是2.2的Xtype了，3+的xtype你可以直接从Api中Ext.Component类的介绍中找到的。