This is a demo for https://github.com/tomaskikutis/html-table-column-hider.

Chemical elements

Symbol	Element	Group	Period	Melt	Boil
H	Hydrogen	1	1	14.01	20.28
He	Helium	18	1	0.95	4.22

Array of column indexes to hide (1-based)

Apply

Hiding columns on multiple tables on single page

Symbol	Element	Group	Period	Melt	Boil
Li	Lithium	1	2	453.69	1560
Be	Beryllium	2	2	1560	2742

Array of column indexes to hide (1-based)

Apply