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

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

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

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

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

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

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

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

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

Fill arrays with specific values using Array.prototype.fill()

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

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.

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

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 normalize method to format a string removing all the accents

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

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

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

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.

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

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.

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

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

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.

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

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

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

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

Converts a given date to a time string

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

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

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

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

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

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

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 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 returns the current minutes.

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

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

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

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 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().

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

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

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

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

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

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 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 all its substrings of length 3 or greater. You must use String.prototype.slice() to achieve this.

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 accepts a string and a target length. If the length of the string is less than the target length, pad the string with spaces at the beginning until the target length is reached. If the string length is greater than or equal to the target length, return the original string.

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

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

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

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 takes a Date object as input and returns a formatted string

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

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

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

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 converts a given string to uppercase

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

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

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 repeats a given string n times.

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

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

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 returns the index of the first occurrence of a given element in an array using Array.prototype.indexOf(). If the element is not found in the array, return -1.

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

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.

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

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

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

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

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.

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

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

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

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

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

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

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

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().

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.

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

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

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

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')

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

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

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

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.