cut out part of a string

Question

Say, I have a string

\"hello is it me you\'re looking for\"

I want to cut part of this string out and return the new string, something like

Answer 1

Use

substring

function

Returns a subset of a string between one index and another, or through the end of the string.

substring(indexA, [indexB]);

indexA

An integer between 0 and one less than the length of the string. 

indexB (optional) An integer between 0 and the length of the string.

substring extracts characters from indexA up to but not including indexB. In particular:

* If indexA equals indexB, substring returns an empty string.
* If indexB is omitted, substring extracts characters to the end 
  of the string.
* If either argument is less than 0 or is NaN, it is treated as if 
  it were 0.
* If either argument is greater than stringName.length, it is treated as 
  if it were stringName.length.

If indexA is larger than indexB, then the effect of substring is as if the two arguments were swapped; for example, str.substring(1, 0) == str.substring(0, 1).