实现类似Excel中的冻结窗格，可根据需要设置freezeColumn（冻结列数）及frreezeRow（冻结行数）属性，还可设置bgColor冻结窗口背景色。具体可参看下面的例子 -Freeze Panes in Excel, to achieve a similar (to freeze the number of rows) according to the need to set freezeColumn (to freeze the number of columns) and f