labelFormatter : Function

A custom formatter function that returns stripLine’s label.

Notes

labelFormatter overrides the label property.
You can use formatNumber and formatDate functions to format number/date values inside the formatter function.

var  chart =  new  CanvasJS.Chart("container",
{
 .
 .
axisY:{
    stripLines: [{
        .
        value:12,
        labelFormatter: function ( e ) {
               return "$" + e.stripLine.value;  
         }  
        .
    }]
},
 .
 .
});
chart.render();

By using labelFormatter, you can return any value to be displayed as stripLine’s label.
Below is the structure of object passed as parameter to the function
```
e: { // parameter sent to function
       chart,
       axis,
       stripLine
  }
  
```

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