毕业设计，基于SSM+MySql+Bootstrap开发的精品课程在线学习系统，内含Java完整源代码，数据库脚本

Version 1.5 ------------- * Bug * combobox: The 'onSelect' event does not fire when load data that contains the selected item. fixed. * datagrid: The 'updateRow' method sometimes does not work properly when the field is set to a blank value. fixed. * Improvement * A label can be associated to any form fields. * combobox: Enhance the 'select' and 'unselect' rules on the drop-down items. * combobox: Add 'limitToList' property to limit the inputed values to the listed items. * combogrid: Allow the user to clone the component quickly. * form: Add the 'dirty' property that allows the user to submit the only changed fields. * form: Add 'resetDirty' method. * datagrid: Allow the user to display a message when there are no records to be shown. * textbox: Add 'label','labelWidth','labelPosition' and 'labelAlign' properties. * spinner: Add 'spinAlign' property. * calendar: Allow the user to display week number of the year. * window: Add 'constrain' property. * New Plugins * passwordbox: The plugin that allows the user to input passwords with nice feedback. * combotreegrid: Combines combobox with drop-down treegrid component. Version 1.4.5 ------------- * Bug * datagrid: The 'getChanges' method does not return the updated rows after calling 'updateRow' method. fixed. * treegrid: The 'onLoadSuccess' event fires when append or insert a row. fixed. * tree: The 'onLoadSuccess' event fires when append or insert a node. fixed. * Improvement * window: The displaying style can be customized. * window: The 'border' property allows the user to set different border style. * navpanel: The 'href' property is enabled to load content from remote server. * combotree: The 'setValue' and 'setValues' methods accept the paremter values in 'id' and 'text' pairs * combobox: Add 'showItemIcon' property. * combobox: Set 'groupPosition' property to 'sticky' to stick the item group to the top of drop-down panel. * messager: Pressing ENTER key on input box will trigger click event of the first button. * validatebox: Add 'editable',disabled' and 'readonly' properties. * validatebox: Add 'enable','disable','readonly' methods. * validatebox: Allow the user to determine how to display the error message. * filebox: Add 'accept' and 'multiple' properties. * form: Add 'iframe' property and 'onProgress' event. * treegrid: Add cascade checkbox selection. * treegrid: Add 'getCheckedNodes','checkNode' and 'uncheckNode' methods. Version 1.4.4 ------------- * Bug * filebox: The 'clear' and 'reset' methods do not work properly in IE9. fixed. * messager: After calling $.messager.progress() with no arguments, the $.messager.progress('close') does not work properly. fixed. * timespinner: The value does not display properly in IE8 while clicking the spin buttons. fixed. * window: The window does not display when calling 'options' method in 'onMove' event. fixed. * treegrid: The 'getLevel' method does not accept the parameter value of 0. fixed. * Improvement * layout: The 'collapsedContent','expandMode' and 'hideExpandTool' properties are supported in region panel. * layout: The 'hideCollapsedContent' property can be set to display the vertical title bar on collapsed panel. * layout: Add 'onCollapse','onExpand','onAdd','onRemove' events. * datagrid: Display the 'up-down' icon on the sortable columns. * datagrid: Add 'gotoPage' method. * propertygrid: Add 'groups' method that allows to get all the data groups. * messager: Auto scroll feature is supported when displaying long messages. * tabs: The 'disabled' property is supported when defining a disabled tab panel. * tabs: The percentange size is supported now. Version 1.4.3 ------------- * Bug * textbox: The 'setText' method does not accept value 0. fixed. * timespinner: When running in IE11, the error occurs when clicking on the empty textbox. fixed. * tabs: The 'update' method can not update only the panel body. fixed. * Improvement * combobox: Improve the performance of displaying the drop-down panel. * combogrid: Remember the displaying text when the drop-down datagrid go to other pages. * combogrid: The 'setValue' and 'setValues' methods accept a key-value object. * window: The inline window's mask can auto-stretch its size to fill parent container. * tabs: The 'showTool' and 'hideTool' methods are available for users to show or hide the tools. * layout: Allow the user to override the 'cls','headerCls' and 'bodyCls' property values. * New Plugins * switchbutton: The switch button with two states:'on' and 'off'. Version 1.4.2 ------------- * Bug * treegrid: The column will restore its size to original size after recreating the treegrid. fixed. * Improvement * draggable: Add 'delay' property that allows the user to delay the drag operation. * tree: Add 'filter' property and 'doFilter' method. * tabs: The 'add' method allows the user to insert a tab panel at a specified index. * tabs: The user can determine what tab panel can be selected. * tabs: Add 'justified' and 'narrow' properties. * layout: Add 'unsplit' and 'split' methods. * messager: Keyboard navigation features are supported now. * form: Add 'onChange' event. * combobox: Add 'queryParams' property. * slider: Add 'range' property. * menu: Add 'itemHeight','inline','noline' properties. * panel: The 'header' property allows the user to customize the panel header. * menubutton: Add 'hasDownArrow' property. * New Plugins * datalist: The plugin to render items in a list. * navpanel: The root component for the mobile page. * mobile: The plugin to provide the mobile page stack management and navigation. Version 1.4.1 ------------- * Bug * combogrid: The combogrid has different height than other combo components. fixed. * datagrid: The row element loses some class style value after calling 'updateRow' method. fixed. * menubutton: Calling 'enable' method on a disabled button can not work well. fixed. * form: The filebox components in the form do not work correctly after calling 'clear' method. fixed. * Improvement * tabs: The 'update' method accepts 'type' option that allows the user to update the header,body,or both. * panel: Add 'openAnimation','openDuration','closeAnimation' and 'closeDuration' properties to set the animation for opening or closing a panel. * panel: Add 'footer' property that allows the user to add a footer bar to the bottom of panel. * datagrid: Calling 'endEdit' method will accept the editing value correctly. * datagrid: Add 'onBeforeSelect','onBeforeCheck','onBeforeUnselect','onBeforeUncheck' events. * propertygrid: The user can edit a row by calling 'beginEdit' method. * datebox: Add 'cloneFrom' method to create the datebox component quickly. * datetimebox: Add 'cloneFrom' method to create the datetimebox component quickly. Version 1.4 ------------- * Bug * menu: The menu should not has a correct height when removed a menu item. fixed. * datagrid: The 'fitColumns' method does not work normally when the datarid width is too small. fixed. * Improvement * The fluid/percentange size is supported now for all easyui components. * menu: Add 'showItem', 'hideItem' and 'resize' methods. * menu: Auto resize the height upon the window size. * menu: Add 'duration' property that allows the user to define duration time in milliseconds to hide menu. * validatebox: Add 'onBeforeValidate' and 'onValidate' events. * combo: Extended from textbox now. * combo: Add 'panelMinWidth','panelMaxWidth','panelMinHeight' and 'panelMaxHeight' properties. * searchbox: Extended from textbox now. * tree: The 'getRoot' method will return the top parent node of a specified node if pass a 'nodeEl' parameter. * tree: Add 'queryParams' property. * datetimebox: Add 'spinnerWidth' property. * panel: Add 'doLayout' method to cause the panel to lay out its components. * panel: Add 'cl