JS Practice — Built-in Objects

String.prototype.trimEnd() — trailing newline

📖 Usage Example

'  hello  '.trimEnd()   // → '  hello'
'text   '.trimEnd()    // → 'text'
'hi'.trimEnd()         // → 'hi'

Use trimEnd() to remove only trailing whitespace from the end of a string, leaving leading whitespace intact.

String.prototype.trimEnd() — Newline

trimEnd() also removes trailing newlines and tabs.

Challenge: Implement stripNewline(str) that removes a trailing newline.

stripNewline('hello\n') // → 'hello'

💡 Hints (1)

• `trimEnd()` removes all trailing whitespace characters, including `\n`, `\t`, and `\r`.