markerMargin: Number

Sets the margin between marker and text of each item inside legend.

Default: Automatically calculated based on the chart size.
Example: 4,12 ..

var  chart =  new  CanvasJS.Chart("container",
  markerMargin: 4,

Try it Yourself by Editing the Code below.

  Also See:    

In order to provide better support,we have closed the comments and switched completely to our Forums.
If you have any questions, please feel free to ask in our forums.