TrimEnd

trimEnd is a string manipulation operation used in several programming languages to remove characters from the end of a string. In most implementations it returns a new string, leaving the input unchanged. The exact characters removed depend on the language and the chosen overload.

Typically, the default behavior is to trim whitespace from the end. Some languages also provide overloads that allow removing trailing characters that belong to a specified set, or trimming according to a predicate. The behavior with Unicode and locale can vary between languages.

In JavaScript and TypeScript, trimEnd on a string removes trailing whitespace characters and returns a new string. It does not accept a character set and is the modern counterpart to the older trimRight. Example: " hello ".trimEnd() yields " hello".

In Kotlin, trimEnd() removes trailing whitespace by default, and overloads let you specify characters to trim. For example, foo!!!.trimEnd('!') would yield foo.

In C#, string.TrimEnd removes trailing characters; the parameterless version trims whitespace, while TrimEnd(params char[] trimChars) removes any trailing characters contained in the provided set. Example: "hello!!!".TrimEnd('!') -> "hello".

In Rust, trim_end removes trailing whitespace; to remove specific trailing characters you can use trim_end_matches, e.g., "hello!!!".trim_end_matches('!') yields "hello".

In Java, the standard library offers stripTrailing() (Java 11+), which removes trailing Unicode whitespace. It does not support trimming arbitrary character sets; custom trimming requires a manual approach or a regex-based solution.

See also: trim, trimStart, trimEnd across languages, and equivalents like rstrip in Python or stripTrailing in Java.