substr Method

Description

Returns a substring beginning at a specified location and having a specified length.

Syntax

stringvar.substr(start [, length ])

The substr method syntax has these parts:

Part	Description
stringvar	Required. A string literal or String object from which the substring is extracted.
start	Required. The starting position of the desired substring. The index of the first character in the string is zero.
length	Optional. The number of characters to include in the returned substring.

Remarks

If length is zero or negative, an empty string is returned. If not specified, the substring continues to the end of stringvar.

The following example illustrates the use of the substr method:

function SubstrDemo()
{
  var s, ss;
  var s = "The quick brown fox jumped over the lazy yellow dog.";
  ss = s.substr(16, 3);
  // Returns "fox".
  return(ss);
}