Please note, this is a STATIC archive of website developer.mozilla.org from 03 Nov 2016, cach3.com does not collect or store any user information, there is no "phishing" involved.

primary

primary
Type: boolean
If set to true, the treecol will have indentation and twisties drawn to the left of it to indicate the hierarchy level of the rows. If no column has the primary attribute set to true, the tree may still contain nested rows, although no indication will be given to the user.  The attribute also controls whether the column picker allows the user to deselect this column.

Document Tags and Contributors

 Contributors to this page: Sheppy, pippijn, jonmmorgan, Marsf, Dria
 Last updated by: Sheppy,