Unable to get access to private variable inside class function

Question

I am working in an angular project and designing d3 pie charts. Everything works fine. But my problem is that I am not able to access class private variable inside a function.

Answer 1

Scope issue. Change

.attr('y', function (d, i) { return (this.legendHeight * (i + 1))})

To

.attr('y', (d, i) => { return (this.legendHeight * (i + 1))})

One of many docs