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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.

Create a function that returns the current date as a number (1-31).

Write a function that converts a given string to uppercase

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

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

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

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

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

Converts a given date to a time string

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

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

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

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

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

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 greets the user depending on the current hour of the day.

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

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

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

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

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

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

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.

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

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

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 replaces all occurrences of a substring with a new string.

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.

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

Create a function that repeats a given string n times.

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

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

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

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.

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.

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 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.

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

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

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

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

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.

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

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

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

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

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

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

Write a function that returns the value of a given string using the String.prototype.valueOf() 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.

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

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

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

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

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.

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 takes an array and reverse its order in place.

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

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

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.

Write a function that takes a string and removes any trailing whitespace at the end of it using String.prototype.trimEnd().

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

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

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

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

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

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

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

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

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

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

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

Create a function that takes a string and a number and pads that string with a specified character until it reaches the given length.

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

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.

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 uses the copyWithin method to replace specified elements within an array.

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

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 removes a portion of the array, as specified by the arguments, and returns the removed portion.

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

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.

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.

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

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

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

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

Create a function that returns the current minutes.