JavaScript provides a wide array of string methods for manipulating and working with strings.
charAt(): Returns the character at a specified index.concat(): Joins two or more strings.includes(): Checks if a string contains a specified substring.indexOf(): Returns the index of the first occurrence of a specified substring.replace(): Replaces a specified value with another value in a string.slice(): Extracts a part of a string and returns it as a new string.split(): Splits a string into an array of substrings.substring(): Extracts characters from a string between two specified indices.trim(): Removes whitespace from both ends of a string.
Further Reference: Useful string methods