JavaScript String Methods

📄️ indexOf()

indexOf() searches its calling string for the first occurrence of the method's string argument.

lastIndexOf() searches its calling string for the last occurrence of the method's argument.

JavaScript's match() method creates a new array containing all the patterns that match the method's regular expression argument.

matchAll() creates a new iterator object containing all the patterns—including capturing groups—that match the method's regular expression argument.

replace() returns a new version of its calling string after replacing some specified patterns with a given replacement.

search() searches its calling string for the first occurrence of the method's regular expression argument.

split() returns an array containing the result of splitting a string into substrings.

toLowerCase() returns the lowercase version of its calling string.

toUpperCase() returns the uppercase version of its calling string.