D3.js add label to bar chart

Question

How can I add label to a bar chart? The bar chart extends along the x-axis and I want to append the labels along the y-axis.

I read some examples and they use an extern

Answer 1

You can get the value of your label by the index like this :

 bar.append("text")
          .attr("x", function(d) { return x(d) - 3; })
          .attr("y", barHeight / 2)
          .attr("dy", ".35em")
          .text(function(d, i) { return label[i]; });