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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 replaces all occurrences of a substring with a new string.

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().

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.

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

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

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

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

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

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

Write a function that flattens nested arrays using Array.prototype.flat() method.

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

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

Implement a function that removes all unused items in a Set collection

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

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

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

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

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

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

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.

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.

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

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

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

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

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.

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

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.

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

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.

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

Write a function that returns whether a given string ends with the provided suffix or not

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.

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

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

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

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

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.

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

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

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

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

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

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

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

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

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

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

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.

Given a date, return the UTC date.

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 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 counts the number of seconds in a given timestamp

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

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

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

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

Converts a given date to a time string

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')

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.

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.

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.

Given an array of objects, group the objects based on a specific key and return a map 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.

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

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

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

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

Write a function that takes a string and a regular expression and returns an array of all the substrings in the string that match the regular expression.

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.

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.

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.

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

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

Write a function that normalizes a string using String.prototype.normalize().

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

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.

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

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.

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

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

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

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

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

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

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

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.

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

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