Uncaught TypeError: Cannot read property 'width' of undefined
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异常：Uncaught TypeError: Cannot read property 'width' of undefined
原因：对照下自己表格的标题列数量M和自己“aoColumns”配置的列数量N是否和标题相等M=N。不相等，则会报以上异常。将aoColumns的列数量跟标题的列数量对应上就行。
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