Hi,

    I am now working on d3.js data visualizations. The problem is that the charts are generated when I visit my sharepoint site from chrome browser but when I open it in internet explorer it is giving me "d3 is undefined" error. I had uploaded the d3.js file to Shared Documents library, Site Assets and referenced in my content editor webpart. It gave the same error. So I tried to include the <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js></script> tag and removed the d3.js file from the library where it has been uploaded. But still I am getting this error. Suggest me solutions to this problem.

Hello Karthik,
Which version of IE you're using. Kindly check whether the d3.js is compatible with your IE version or not. 
Please check the below URL :

http://stackoverflow.com/questions/17202118/d3-ie8-compatibility