Javascript-Multi-Level Table statistics?

How do I perform data statistics on multiple levels of table data? How can I implement php or javascript to construct table data?

How do I perform data statistics on multiple levels of table data?
How can I implement php or javascript to construct table data?

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How do I perform data statistics on multiple levels of table data?
How can I implement php or javascript to construct table data?

Use arrays. PHP arrays are omnipotent.

Js can only write logic by itself, first count the Title 4-6, then 3, preferably 2.

Check whether jqGrid can be implemented.