d3 is not defined - ReferenceError

Question

I am trying to use a \"fancy graph\" found at http://bl.ocks.org/kerryrodden/7090426:

Answer 1

Had the same issue, though I initially thought it is because of security restrictions of browser, that wasn't the case. It worked when I added the charset to the script tag as shown below:

The same is shown in the d3 docs, though it doesn't mention this issue specifically: http://d3js.org/

Yes, having it locally works too.

Here is the full example: