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

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

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().

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.

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

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

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

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

Write a function that replaces the first occurrence of a specific string in 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 a Set object as a parameter and returns an array of keys using Set.prototype.keys().

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

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

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

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

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

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.

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

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

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 takes an array and reverse its order in place.

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

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

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

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

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

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 sets the UTC month of a given date object.

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.

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

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.

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 returns it in lowercase using the toLocaleLowerCase() method.

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

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

Write a function that converts a given string to uppercase

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.

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

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

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 date and returns the year in the hh:mm:ss format.

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

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.

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

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

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

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.

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.

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

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

This kata focuses on using String.prototype.indexOf() 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 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 transforms a given string to uppercase, using String.prototype.toLocaleUpperCase()

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 in an array of music tracks and returns an object with the count of each genre in the array

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

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

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

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

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 string and a number, and repeats the string the given number of times.

Implement normalize method to format a string removing all the accents

Write a function that concatenates two strings using the String.prototype.concat() 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 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 string as input and returns the same string in uppercase letters using the `toString()` method of the String object.

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.

Create a function that takes a year (YYYY) and returns the date object with its year set to the provided year.

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

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

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 returns an array of values of an array using the Array.prototype.values() method.

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

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.

Create a function that returns the current minutes.

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

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

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

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

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 flattens nested arrays using Array.prototype.flat() method.

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

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

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

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

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

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

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