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

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

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

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

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.

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.

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.

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 takes a string and removes any trailing whitespace at the end of it 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.

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

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

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.

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

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

Create a function that repeats a given string n 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.

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

Create a function that uses the String.prototype.lastIndexOf() method to find the index of the last occurrence of a specified substring in a given string.

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

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

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

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

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.

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

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 returns an array of values of an array using the Array.prototype.values() 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 checks if a given variable is an array. If it is an array, return true, otherwise return false.

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

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 an array and reverse its order in place.

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

Implement normalize method to format a string removing all the accents

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

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

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.

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

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

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

Create a function that accepts a Set and a value to remove, and returns the updated Set after deleting the value.

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

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

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

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

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

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

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

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

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

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

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

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

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

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.

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

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 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 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 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.

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

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 an algorithm that manages the overbooking of an airline flight.

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.

Given two arrays, join them to create a new array.

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

Implement a function that sets the milliseconds of a given date object to a specified value.

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

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

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

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

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

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

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 various functionalities using Array.prototype.slice() method

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

Converts a given date to a time 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.

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 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.

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

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.

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

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.

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

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

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