StringprototypetoLowerCase
The `String.prototype.toLowerCase()` method in JavaScript converts all the characters in a string to lowercase letters. It returns a new string without modifying the original string, adhering to JavaScript’s immutable string design. This method is widely used for case-insensitive comparisons, text normalization, or preparing strings for database queries and searches.
The method operates on Unicode characters, meaning it correctly handles letters from various scripts, including accented
`toLowerCase()` is locale-sensitive by default, meaning its behavior can vary based on the language and cultural
Performance-wise, `toLowerCase()` is optimized for common use cases, though repeated calls on large strings may impact
This method is part of the ECMAScript standard and is supported in all modern browsers and Node.js