Need Js code. highglight row or coloumn when header is clicked, if only cell is clicked highlight only cell.

Given HTML AND CSS

Student ID	Asmt 1	Asmt 2	Asmt 3
100000000	4.5	3.75	3.4
100000001	4.25	4.12	4.25
100000002	5.0	4.75	4.5

CSS

table { width: 600px; border-collapse: collapse; } td,th { border: 1px solid black; } th { background-color: darkBlue; color: white; } .selected { background-color: lightBlue; }