labelFontWeight: String

Set the font Weight used in Axis Labels. It can be set to one of the options below.

Default: “normal”
Options: “lighter”, “normal”, “bold” , “bolder” 
var  chart =  new  CanvasJS.Chart("container",
{
 .
 .
 axisX:{
   labelFontWeight: "bold",
 },
 .
 .
});
chart.render();
Try Editing The Code

  Also See:    

If you have any questions, please feel free to ask in our forums.Ask Question