D3.js How To Update A Global Variable From D3.select()

I'm stuck with a global/local variable issue. Here, my code based on http://www.d3noob.org/2014/04/using-html-inputs-with-d3js.html index.html Copy

So in short the global variable change will happen in the change function. And the console.log("Outside: " + currentRadius); is done much before that event got fired.

I hope this helps