GridLinesOptions object
The GridLinesOptions type defines the size, color and style of the grid-lines. The GridLinesOptions object supports the following properties and methods:

NameDescription
ColorSpecifies the line's color
SkipSpecifies the number of grid lines to skip
StepDefines the step to show the grid lines
StyleDefines the style of the line
WidthSpecifies the line's width or size (1 by default)