# parser(_:foundIgnorableWhitespace:) Reported by a parser object to provide its delegate with a string representing all or part of the ignorable whitespace characters of the current element. ``` optional func parser(_ parser: XMLParser, foundIgnorableWhitespace whitespaceString: String) ``` ## Parameters `parser` A parser object. `whitespaceString` A string representing all or part of the ignorable whitespace characters of the current element. ## Discussion All the whitespace characters of the element (including carriage returns, tabs, and new-line characters) may not be provided through an individual invocation of this method. The parser may send the delegate several [`parser(_:foundIgnorableWhitespace:)`](/documentation/Foundation/XMLParserDelegate/parser(_:foundIgnorableWhitespace:)) messages to report the whitespace characters of an element. You should append the characters in each invocation to the current accumulation of characters. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)