get three words that appear most often in a string, using underscore

get_most_popular_word_underscore.js

//get the three words that appear most often in a single string
var s = "two one two three four one one eight one two four eight three one"
var p = _.pairs(_.countBy( s.split(" ")))
var f =  _.sortBy(p, function (p) { return p[1]; }).reverse().slice(0,3);

console.log(
 
 f

)

//output [["one", 5], ["two", 3], ["eight", 2]]