snapToDataPoint: Boolean

Setting snapToDataPoint to true automatically snaps crosshair to the nearest data point. Otherwise it follows mouse co-ordinates.

var  chart =  new  CanvasJS.Chart("container",
{
 .
 .
axisX:{
    crosshair:{
        enabled: true,
        snapToDataPoint: true,
	.
	.
    }
},
 .
 . 
});
chart.render();