Are strings in JavaScript designed to be immutable, or can they be changed? Additionally, is there a requirement for a string builder in JavaScript to manage string manipulations effectively?
Yes, strings in JavaScript are immutable, meaning once a string is created, it cannot be altered. Any operation that seems to modify a string actually creates a new string.
There's no need for a string builder as JavaScript efficiently handles string concatenation. For example:
let str = “Hello”;
str += " World"; // Creates a new string “Hello World”
While JavaScript lacks a dedicated string builder like some other languages, methods like join() on arrays can be useful for complex string manipulations.