How can I use javascript to get a substring of whatever is between two parenthesis?

Question

I am trying to return just "AA" using javascript.

This doesn't work.

var myStr = "Item Code Alpha Tengo (AA)"; 
var newStr = myStr.substring("(",myStr.lastIndexOf(")"));

Answer 1

You can also do:

var myStr = 'Item Code Alpha Tengo (AA)';
myStr.replace(/^[^(]*\(|\)[^)]*$/g, ''); // AA

or the simpler:

myStr.replace(/.*\(|\).*/g,'')