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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.

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

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

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

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

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

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

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

Create a function that returns the current minutes.

Create a function that takes an array and reverse its order in place.

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 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.

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

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

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

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

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

Converts a given date to a time string

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

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

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

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

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

Implement a function that takes in a Set and returns an array of entries

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

Create a function that uses the copyWithin method to replace specified elements within an array.

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

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

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 checks if a given string ends with a specified suffix.

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

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

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 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 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 counts the number of seconds in a given timestamp

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 checks if a given string has a unicode character code point greater than or equal to 128. Use the String.prototype.codePointAt() method.

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

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

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

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

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

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

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.

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

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 will return an array in a localized way using the toLocaleString 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.

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

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 number n, the function should return the string repeated 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 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 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 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.

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

Given a date, return the UTC date.

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

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

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

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

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

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.

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

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

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

Create a function that receives a Date object and returns the milliseconds that have elapsed since the start of the day.

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.

Create a function that repeats a given string n times.

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 an array of numbers and returns the index of a given element. Use Array.prototype.findIndex() to implement the function.

Implement a function that takes a Date object as input and returns a formatted 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 slices a string based on a given start and end indexes

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

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

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

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().

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 flattens nested arrays using Array.prototype.flat() 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 Stock Advisor that recommends which stocks to buy based on certain parameters.

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

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

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

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

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

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

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