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

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

Create a function that receives a string and a number n, the function should return the string repeated n times.

Given an array of person objects, sort them alphabetically by their last name using String.prototype.localeCompare().

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

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

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 searches for the last index of a substring in an array using Array.prototype.lastIndexOf().

Implement normalize method to format a string removing all the accents

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

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.

Create a function that returns the current year using Date's built-in getFullYear method

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

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

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

Write a function that takes a string and regular expression as inputs, and returns an array of all matches found using the String.matchAll() method.

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

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

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

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

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.

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

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

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

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.

Write a function that converts a given string to uppercase

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

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 repeats a given string n times.

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

Create a function that takes in an array of music tracks and returns an object with the count of each genre in the array

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

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.

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

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.

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

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

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 two arrays as arguments and concatenates them into a new array using the Array.prototype.concat() method.

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

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

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

Write a function that takes a Date object and returns a string representing the time portion of the date in the current time zone using the toLocaleTimeString() method. The function should also take an optional argument specifying the locale to use.

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

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

Create a function that uses Array.prototype.findLast() to find the last element in an array that matches a given condition. Return the element if it exists or null if it does not.

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.

Write a function that takes a date object and a number of seconds and returns a new date object with the seconds set to the provided value. Example input: setSeconds(new Date('2022-10-10T10:10:10'), 30) Expected output: new Date('2022-10-10T10:10:30')

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

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

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 a date and a year and sets the date's UTC full year to the provided year.

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

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

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

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

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

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

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

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

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

Create a function that counts the number of seconds in a given timestamp

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.

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().

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

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

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

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

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

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

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.

Converts a given date to a time string

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

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 takes an array and a value as arguments and adds the value to the beginning of the array using the unshift() 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 replaces all instances of a specified substring in a given string.

Create a function that takes two parameters: a string and a regular expression. The function should return an array of all matches found in the string using the regular expression.

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.

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

Combine two arrays into a single array using the Array.prototype.concat() method

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

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

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().

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

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

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

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

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

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

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

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

Create a function that returns the current minutes.

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

Create a function that receives a Date object and returns the milliseconds that have elapsed since the start of the day.

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

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