1. Bootstrap is a front-end solution, mainly to solve cross-screen problems, your needs have nothing to do with bootstrap.
2. Is that what you want (to change a drop-down option) later (to update the table)?
2. one. If the advantage of bootatrap, is that the table automatically solves the cross-screen problem (such as automatic shortening of the table on the mobile side, or automatically adapting to size)
2. two. Whether or not bootstrap, just uses (js listens for the change event of the drop-down box) and then (ajax gets new table data) and then (deletes all tables) and finally (regenerates the table)

this column is fixed, I want it to be dynamic, maybe 5 columns or 6 columns. So