labelPlacement : String

labelPlacement allows you to position axisY labels either inside or outside the plot-area.

Default: “outside”
Options: “inside”, “outside”. 
var  chart =  new  CanvasJS.Chart("container",
{
 .
 .
axisY:{
   .
   labelPlacement:"inside",
   .
 }]
},
 .
 .
});
chart.render();
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