So I am making a new topic. The solution as presented in forum post uses template strings:
.style('height', d => ${d}px)
But the challenge instructions do not mention the use of template strings, nor do any of the previous challenges. It works, but feels disconnected to the challenge. How would the user know to use a template string / string literal here?
Here is my solution that completes the challenge, and is more consistent with the instructions in this challenge and previous ones:
If a user skips to the subsequent challenge it has a callback function written in the sample code. That tells me a callback function is what the author of the challenge intended.
I propose we add a second solution that includes a callback function.
I agree with amartincastro. The solution does not follow what was taught in the previous lessons. There should be a second solution to keep a sanity check for people that do not know what is template literal is.