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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.

Create a function that returns an array of values of an array using the Array.prototype.values() method.

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

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

Given an array of numbers and a start index, remove a certain number of elements from the array and replace them with new elements.

Implement equations using the Array.of() method to create arrays.

Implement a function that groups the elements of an array based on a given predicate function.

Create a function to search for a substring in a given string using String.prototype.search() method.

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.

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

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

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.

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 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.

Write a function that takes a string and returns all its substrings of length 3 or greater. You must use String.prototype.slice() to achieve this.

Convert a string to an array of Unicode code points using String.prototype.codePointAt() method.

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

Converts a given date to a time string

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

Create a function that takes an array as input and returns a new array with the elements in reversed order.

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

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

Create a function that repeats a given string n times.

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

This kata focuses on using String.prototype.indexOf() method.

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

Write a function that returns a substring of a given string, based on the start and end index provided

Write a function that takes a string and returns an array of matched patterns using String.prototype.matchAll().

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

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

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

Write a function that returns an array of char codes from a string

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.

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

Create a function that replaces all occurrences of a substring with a new string.

Implement a function that returns the current month from Date object using Date.prototype.getMonth()

Implement a function that groups an array of objects by a given key and returns a new array of objects, where each object has a key and an array of objects that have that key.

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

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 an array of numbers and returns their sum, using Array.prototype.reduceRight().

Create an Inventory Management System that allows users to add, remove and update items in the inventory.

Write a function that takes a date object and a number representing the desired month, and sets the month of the date to the given month.

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

Write a function that checks if a given string includes a specific substring. Use String.prototype.includes() method.

Implement an algorithm that manages the overbooking of an airline flight.

Write a function that checks whether a given string ends with the specified suffix or not.

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.

Create a function that takes a string and a number as arguments, and pads the string on the right side with spaces until the string reaches the desired length.

Convert a string to uppercase using String.prototype.toUpperCase();

Write a function that converts a given string to its string representation using the toString() method.

Create a function that takes an array of numbers and returns the index of a given element. Use Array.prototype.findIndex() to implement the function.

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

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.

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

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

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 uses the copyWithin method to replace specified elements within an array.

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

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

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

Implement the Array.prototype.unshift() method without using built-in functions

Write a function that takes a string as input and splits it into an array of words using String.prototype.split(). Then, join the array back into a string using Array.prototype.join(). Finally, return the new string with a different delimiter separating each word.

Create a function that takes an array and reverse its order in place.

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

Write a function that loops through a Set using Set.prototype.forEach() method and returns an array containing the results of applying the provided function to each element.

Create a function that concatenates two strings using the String.prototype.concat() method. The function should take two string parameters and return the concatenated string.

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

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

Create a function that replaces all instances of a given substring with another string within a larger string using String.prototype.replaceAll() method.

Create a function that will return an array in a localized way using the toLocaleString method.

Use Array.prototype.slice() to solve the following tasks.

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.

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

Write a function that finds the last index of a given element in an array using the Array.prototype.findLastIndex method.

Convert an array to a string with comma-separated values. The input array can contain numbers, strings, objects, or arrays.

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

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

Write a function that takes in a date and returns the seconds within the minute in UTC time.

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

Create a function that takes a Date object and returns a JSON string of the date in ISO format.

Create a function that receives a string and normalizes it using the String.prototype.normalize() method. Apply the NFC normalization form.

Create a function that takes two parameters: a string and a target substring, and returns the index of the first occurrence of the target substring in the string. If the target substring is not found, return -1.

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

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

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

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

Create a Stock Advisor that recommends which stocks to buy based on certain parameters.

Create a function that returns the current minutes.

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

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.

Create a function that takes in a string and a length and returns a new string with the original string padded with leading spaces if it is shorter than the provided length.

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

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 takes a string and returns a new string that is a slice of the original string. The function should take two arguments, start and end, which represent the starting and ending indices of the slice.

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

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

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 a date and a year as arguments and returns a new date with the year set to the specified value using Date.prototype.setFullYear().