span
tags property: COLGROUP, COL:
1. Specifies the number of columns in the script code to which the properties specified by the COLGROUP or COL tag belong.

2. Returns the value of the number of columns in scripts:
object.span
Table
1 2 #
1.1 1.2 001
2.1 2.2 002
Table
1 2 #
1.1 1.2 001
2.1 2.2 002