Interactive Code:

var value = ; var value1 = " "; return value + ' ' + value1 + ' '+ ' ';
Evaluate:

Build via custom polymer elements:

var value = ; var value1 = " "; return value + ' ' + value1 + ' '+ ' ';

Using he , Scrubbing.js and google-code-prettify

Evaluated via custom API:

document.querySelector('#my-code').run()