学习jquery插件之DataTables（二）
DataTable支持如下回调函数
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用于在每次重画的时候修改表格的脚部
fnFormatNumber
1.int : number to be formatted
String : formatted string for DataTables to show the number
有默认的
用于在大数字上，自动加入一些逗号，分隔开
fnHeaderCallback
1.node : "TR" element for the header 2.array array strings : Full table data (as derived from the original HTML) 3.int : Index for the current display starting point in the display array 4.int : Index for the current display ending point in the display array 5.array int : Index array to translate the visual position to the full data array
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用于在每次draw发生时，修改table的header
fnInfoCallback
1.object: DataTables settings object 2.int: Starting position in data for the draw 3.int: End position in data for the draw 4.int: Total number of rows in the table (regardless of filtering) 5.int: Total number of rows in the data set, after filtering 6.string: The string that DataTables has formatted using it's own rules
string: The string to be displayed in the information element.
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用于传达table信息
fnInitComplete
1.object:oSettings - DataTables settings object
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表格初始化完成后调用
fnPreDrawCallback
1.object:oSettings - DataTables settings object
Boolean
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用于在开始绘制之前调用，返回false的话，会阻止draw事件发生；返回其它值，draw可以顺利执行
fnRowCallback
1.node : "TR" element for the current row 2.array strings : Raw data array for this row (as derived from the original HTML) 3.int : The display index for the current table draw 4.int : The index of the data in the full list of rows (after filtering)
node : "TR" element for the current row
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当创建了行，但还未绘制到屏幕上的时候调用，通常用于改变行的class风格
fnServerData
1.string: HTTP source to obtain the data from (i.e. sAjaxSource) 2.array objects: A key/value pair object containing the data to send to the server 3.function: Function to be called on completion of the data get process that will draw the data on the page.
void
$.getJSON
用于替换默认发到服务端的请求操作
fnStateLoadCallback
1.object:oSettings - DataTables settings object 2.object:oData - Object containing information retrieved from the state saving cookie which should be restored. For the exact properties please refer to the DataTables code.
Boolean - false if the state should not be loaded, true otherwise
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在cookies中的数据被加载前执行，可以方便地修改这些数据
fnStateSaveCallback
1.object:oSettings - DataTables settings object 2.String:sValue - a JSON string (without the final closing brace) which should be stored in the state saving cookie.
String - the full string that should be used to save the state
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在状态数据被存储到cookies前执行，可以方便地做一些预操作
