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

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

Create a function that uses Array.prototype.every() to check if all the elements in an array meet a certain condition.

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 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 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 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 normalizes a string using String.prototype.normalize().

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 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 a string as input and returns the same string in uppercase letters using the `toString()` method of the String object.

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.

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 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.

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

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.

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

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

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 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.

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

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

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 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 takes an array as input and returns an array of the keys of the given array using Array.prototype.keys() method.

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

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.

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.

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

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

Write a function that converts a given string to uppercase

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

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.

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

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 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 every element in an array satisfies a given condition.

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

Implement various functionalities using Array.prototype.slice() 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

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.

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.

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

Create a function that counts the number of seconds in a given timestamp

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

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

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

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

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

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

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

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

Create a function to search for a substring in a given string using String.prototype.search() method.

Write a function that takes a Date object and returns the date formatted in the user's local format using the toLocaleDateString() method.

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

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

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

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

Converts a given date to a time 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.

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

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

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

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

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

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

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 returns the current minutes.

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

Given a date, return the UTC date.

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

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

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

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

Write a function that takes a string and returns it in lowercase using the toLocaleLowerCase() 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 returns a substring of a given string, starting at a specified index and ending before a specified index.

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

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

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

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

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

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

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

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 returns the nth number in the Fibonacci sequence using recursion.

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

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

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

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