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

If you're really getting a performance problem from the large array (dont' optimize prematurely), you could use slice to extract the single strings and indexOf/lastIndexOf to find their positions:

str.slice(0, str.indexOf(','))
and
str.slice(str.lastIndexOf(',')+1) // 1==','.length