JSFiddle - React, Tailwind, and code Playground

by shaunxcode

HTML

<script src="http://underscorejs.org/underscore-min.js"></script>

CoffeeScript

flatten = (items) ->
    result = []
    for item in items
       if _.isArray item
           result = result.concat flatten item
       else    
           result.push item
    result 

document.write flatten [[5, 3, 1], [[1, 2], 4]]