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

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.

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

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

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

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

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

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.

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

Implement the Array.prototype.with() method that returns a new array with the elements from the original array and the added elements.

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 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 matched patterns using String.prototype.matchAll().

Write a function that returns the nth number in the Fibonacci sequence using recursion.

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

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.

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

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

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

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

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

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

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.

Given a date, return the UTC date.

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

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.

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 counts the number of seconds in a given timestamp

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 returns the result of a string match with a given pattern.

Implement a function that uses String.prototype.trimEnd() to trim whitespace at the end of a string.

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

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 returns an array of char codes from a string

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

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

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 loops through a Set using Set.prototype.forEach() method and returns an array containing the results of applying the provided function to each element.

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

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

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

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

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

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 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 program that classifies music genres based on certain audio features

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

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

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 a date and a year and sets the date's UTC full year to the provided year.

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

Implement a function that takes a string as input and returns it in lower case.

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 a date string as input and converts it to a UTC date string format.

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 in a date and returns the seconds within the minute in UTC time.

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().

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 normalize method to format a string removing all the accents

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

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.

Implement various functionalities using Array.prototype.slice() method

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

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

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.

Combine two arrays into a single array using the Array.prototype.concat() method

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

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

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

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

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

Converts a given date to a time string

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

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

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 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 takes an integer n and returns the nth Fibonacci number using recursion.

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

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 includes a specific substring. Use String.prototype.includes() method.

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

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 two arrays as arguments and concatenates them into a new array using the Array.prototype.concat() 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 takes in a string and uses precision cutting to remove all occurrences of the letter 'e'. Return the resulting string.

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.

Create a function that repeats a given string n times.

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

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

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

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

Write a function that uses the String.prototype.trimStart() method to remove any whitespace characters from the beginning of a given string.