What about substring?

Answer 1

EXAMPLE:
Extract characters from a string:

var str = "Hello world!";
var res = str.substring(1,4);

The result of res will be:

ell

DEFINITION
The substring() method extracts the characters from a string, between two specified indices, and returns the new sub string.

This method extracts the characters in a string between "start" and "end", not including "end" itself.

If "start" is greater than "end", this method will swap the two arguments, meaning str.substring(1,4) == str.substring(4,1).

If either "start" or "stop" is less than 0, it is treated as if it were 0.

Note: The substring() method does not change the original string.

SYNTAX
string.substring(start,end)

PARAMETER VALUES
ParameterDescriptionstartRequired. The position where to start the extraction. First character is at index 0endOptional. The position (up to, but not including) where to end the extraction. If omitted, it extracts the rest of the string