String split and get first and last occurrences

Question

I have a long string of ISO dates:

var str = \"\'2012-11-10T00:00:00.000Z\', \'2012-11-11T00:00:00.000Z\', ****  \'2013-11-12T00:00:00.000Z\'\";

Answer 1

There is jsperf using substr / substring that is the most optimal way. See:

https://jsperf.com/slice-vs-substr-vs-substring-vs-split-vs-regexp