The method appendcolumns appends a number of columns in existing grid.
n - represents the number of collumns to be appended.
var pggrid = new jsgrid();
pggrid.init({
id:"wrp",
rows:5,
columns:5,
width:25,
height:25,
gutter:1,
backgroundColor: "#d00000"
});
pggrid.appendcolumns(10);
The script above appends 10 columns in the existing grid (5 columns). Now the number of columns is 15.