Why is lodash.each faster than native forEach?

Question

I was trying to find the fastest way of running a for loop with its own scope. The three methods I compared were:

var a = \"t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t,t         


        

Answer 1

Here's an updated link (circa 2015) showing the performance difference which compares all three, for(...), Array.forEach and _.each: https://jsperf.com/native-vs-underscore-vs-lodash

Note: Put here since I didn't have enough points yet to comment on the accepted answer.