substring-before Function
A version of this page is also available for
4/8/2010
Returns the substring of the first argument string that precedes the first occurrence of the second argument string in the first argument string, or the empty string if the first argument string does not contain the second argument string.
Syntax
string substring-before(string, string)
Parameters
- string
A string.
- string
A string.
Return Value
Returns the substring of the first argument string that precedes the first occurrence of the second argument string in the first argument string, or the empty string if the first argument string does not contain the second argument string.
Remarks
If an argument is not of type string, it is first converted to a string and then evaluated.
The following function call returns "1999".
substring-before("1999/04/01","/")