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Write a function that returns the result of a string match with a given pattern.

Sort an array of words based on their alphabetical order using String.prototype.localeCompare() method.

Create a function that takes an array and removes a portion of the array, as specified by the arguments, and returns the removed portion.

Create a function that repeats a given string n times.

Write a function that uses recursion to calculate the factorial of a given positive integer.

Write a function that uses the String.prototype.trimStart() method to remove any whitespace characters from the beginning of a given string.

Write a function that concatenates two strings using the String.prototype.concat() method.

Create a function that uses the copyWithin method to replace specified elements within an array.

Write a function that checks if a given variable is an array. If it is an array, return true, otherwise return false.

Create a function that uses the String.prototype.replaceAll() method to replace all occurrences of a given substring within a string.

Implement a function that removes leading and trailing whitespace from a string using the String.prototype.trim() method.

Create a program that classifies music genres based on certain audio features

Write a function that returns a substring of a given string, starting at a specified index and ending before a specified index.

Create a function that receives a string and a regular expression pattern and returns an array of all the occurrences of the pattern in the string using String.prototype.matchAll().

Create a function that normalizes a string using String.prototype.normalize method.

Implement a function that takes a string as input and returns it in lower case.

Write a function that takes a date and returns the year in the hh:mm:ss format.

Write a function that takes an array of numbers and returns their sum, using Array.prototype.reduceRight().

Create a function that receives a string and a number as parameters. The function should return the string repeated `n` times, where n is the number passed as parameter.

Create a function that determines if two strings are anagrams of each other.

Create a function that takes a string and a number, and repeats the string the given number of times.

Implement a function that replaces all instances of a specified substring in a given string.

Complete the functions provided to properly utilize the Date.now() method.

Replace all vowels in a string with a '-'.

Given a string, return a new string that is a substring of the original string. The substring should start at a specified index and continue until the end of the original string.

Create a function that removes white space at the end of a given string using String.prototype.trimEnd().

Write a function that takes in a string and uses precision cutting to remove all occurrences of the letter 'e'. Return the resulting string.

Create a function that uses Array.prototype.entries() to iterate over an array and perform some operations.

Write a function that takes an array and a value and pushes the value to the end of the array using Array.prototype.push().

Implement a function that uses String's padStart method to add leading zeros to a number string to ensure it always has a minimum length

Create a function that takes in a string with extra white space at the beginning and end of the string, and returns a new string with that white space removed. Use String.prototype.trim().

Write a JavaScript function to find the index of an item in an array using Array.prototype.findIndex().

Create a function that sets the UTC month of a given date object.

Given a date, return the UTC date.

Implement a function that returns true if a given string starts with a specific substring.

Write a function that takes an integer n and returns the nth Fibonacci number using recursion.

Write a function that accepts a date object and a number of seconds (0 - 59) and returns a new date object with the seconds set to the provided value. The operation should be done using the setUTCSeconds() method.

Create a function that concatenates two strings using the String.prototype.concat() method.

Create a function that takes in a string and uses String.prototype.match() to find all occurrences of a pattern within the string.

Write a function that replaces the first occurrence of a specific string in a given string.

Create a function that uses Array.prototype.every() to check if all the elements in an array meet a certain condition.

Implement a function that adds a value to a set using Set.prototype.add().

Create a function that takes a year (YYYY) and returns the date object with its year set to the provided year.

Create a function that transforms a given string to uppercase, using String.prototype.toLocaleUpperCase()

Given a sentence, split it into an array of words using the String.prototype.split() method.

Write a function that takes a string and a substring, and returns the index of the first occurrence of the substring in the string. If the substring is not found in the string, return -1.

Create a function that returns the current minutes.

Create a function that takes two strings as input and concatenates them using the String.prototype.concat() method.

Create a function that returns the month of a Date object in UTC time zone.

Create a function that greets the user depending on the current hour of the day.

Write a function that checks if a given string has a unicode character code point greater than or equal to 128. Use the String.prototype.codePointAt() method.

Write a function that uses the Date.prototype.getDay() method to determine the day of the week for a given date object.

Write a function that takes a string and a substring as arguments, and finds the last occurrence of the substring in the string. If the substring is not found, return -1.

Write a function that takes in a string and a target substring, and returns the index at which the target substring is first found. If the target substring is not found in the string, return -1. Use the built-in JavaScript method `indexOf()` to solve the problem.

Create a function that takes in a string and checks if it starts with a given substring. Return a boolean indicating whether or not the string starts with the given substring.

A kata that requires the student to use String.prototype.split() to split a given string into substrings and perform a specified operation on them.

Implement a function that checks if all elements from an array are included in a given Set using the built-in Set.prototype.has() method.

Implement a function that concatenates a given string 'n' times using the String.prototype.repeat() method.

Write a function that joins two arrays into a single string using Array.prototype.join() method.

Implement a function that takes an array of strings and a search string, and returns a new array containing only the strings that includes the search string using String.prototype.includes() method.

Complete the functions to find the index of an element in an array using Array.prototype.indexOf().

Write a function that returns the nth number in the Fibonacci sequence using recursion.

Write a function that takes an array and a value as arguments and returns the index of the last occurrence of that value in the array using Array.prototype.lastIndexOf(). If the value is not found, return -1.

Write a function that takes a date string as input and converts it to a UTC date string format.

Implement a function that uses String.prototype.trimEnd() to trim whitespace at the end of a string.

Implement normalize method to format a string removing all the accents

Write a function that accepts a string and a number as arguments, then returns the character at that position in the string. Use String.prototype.charAt() for this exercise.

Create a function that takes an array and a value as arguments and adds the value to the beginning of the array using the unshift() method.

Create a function that checks if a given string ends with a specified suffix.

Create a function that takes in two parameters, a string and a substring, and checks if the string includes the substring. Return a boolean value.

Implement the Array.prototype.with() method that returns a new array with the elements from the original array and the added elements.

Write a function that takes a Date object and returns the date formatted in the user's local format using the toLocaleDateString() method.

Given an array of numbers, use reduce method to obtain a single value that represents the sum of all numbers in the array.

Implement various functionalities using Array.prototype.slice() method

Write a function that can take in a list of numbers and precision cut them to a desired number of decimal places.

Implement a function that takes a Date object and a number representing minutes and sets the UTC minutes of the Date object to the provided value. The function should return the updated Date object.

Create a function that takes a string and a number and pads that string with a specified character until it reaches the given length.

Create a function that takes a date and a year and sets the date's UTC full year to the provided year.

Create a function that takes a string as input and returns the same string in uppercase letters using the `toString()` method of the String object.

Create a function that takes a string and returns an array of the char codes for each character in the string

Write a function that converts a given string to uppercase

Implement a function that returns the character at the specified index of a given string.

Converts a given date to a time string

In this kata, you will be working with the String.prototype.toLocaleUpperCase() method to convert a string to uppercase according to the user's locale.

Write a function that checks if an element is present in an array using Array.prototype.includes() method.

Write a function that returns the value of a given string using the String.prototype.valueOf() method.

Write a function that takes a string and returns an array of code points for each character in the string using String.prototype.codePointAt() method.

Write a function that takes a string and returns it in lowercase using the toLocaleLowerCase() method.

Write a function that extracts a character from a string given an index using String.prototype.charAt()

Create a function that slices a string based on a given start and end indexes

Write a function that takes a string and removes any trailing whitespace at the end of it using String.prototype.trimEnd().

Create a function that takes an array as input and returns an array of the keys of the given array using Array.prototype.keys() method.

Implement a function that takes a Date object as input and returns a formatted string

Create a function that sorts an array of strings in alphabetical order using String.prototype.localeCompare()

Write a function that takes a Set object as a parameter and returns an array of keys using Set.prototype.keys().

Write a function that takes a string and a search term and returns the index of the first occurrence of the search term in the given string. If the search term is not present in the string, return -1.

Write a function that checks if every element in an array satisfies a given condition.

Create a function that takes a string as input and returns the string in all lowercase letters.

Implement a function that takes in a Set and returns an array of entries

Create a function that takes a start time and an event duration and returns the end time of the event, using the Date.prototype.setHours() method to set the hours of the start time.