thickness : Number

Sets the thickness of Crosshair in pixels.

Default: 2
Example: 2,4 ..
var  chart =  new  CanvasJS.Chart("container",
{
 .
 .
 axisY:{
	crosshair: {
		enabled: true,
		lineThickness: 5,
		.
		.
	}
 },
 .
 . 
});
chart.render();

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