how to show/ hide column in a extjs 3 grid panel

Question

I have a grid panel i need to show / hide columns in a grid panel depending on the value of a checkbox. If the checkbox is checked i need to display column in the grid and i

Answer 1

In Ext JS 4.1, to hide a column, you use:

grid.columns[0].setVisible(false);

Looks like getColumnModel() with its setHidden() method is no longer part of the grid: http://docs.sencha.com/ext-js/4-1/#!/api/Ext.grid.Panel