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

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 returns an array of code points for each character in the string using String.prototype.codePointAt() method.

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

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

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

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.

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

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

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

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

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.

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

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

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 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.

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

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

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

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.

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

Create a function that takes in an array of music tracks and returns an object with the count of each genre in the array

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

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

Converts a given date to a time 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.

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

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

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

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 checks if a given string includes a specific substring. Use String.prototype.includes() 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().

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 converts a given string to its string representation using the toString() 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

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 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().

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

Create a function that returns the current minutes.

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 replaces all instances of a specified substring in a given string.

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

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

Create a function that repeats a given string n times.

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

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

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

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

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 takes an array and reverse its order in place.

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

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.

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

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

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

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

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 replaces all occurrences of a substring with a new string.

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.

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

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

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

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

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

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

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

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.

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

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

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

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

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.

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

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 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.

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

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

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().

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 various functionalities using Array.prototype.slice() 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.

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.

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

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

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