Array methods commonly used in JavaScript

some() method This method checks whether at least one element of the array satisfies the conditions checked by the parameter function. Output: true reduce () method The array reduce () method in Javascript is used to reduce the array to a single value, and for the array Each value of (from left to right) and return value executes a provided function. Functions are stored in the accumulator. Output: 3 map() method The map() method in Javascript works by calling a specific function to create an array. This is a non-mutating method. Typically, the map() method is used to iterate over the array and call a function on each element of the array. Output: true flat() method This method creates a new array that contains multiple arrays. Basically create a simple array from an array containing multiple arrays. Output: 11, 89, 23 ，7，98 flatMap() method This method is used to flatten the input array elements into a new array. This method first maps each element with the help of the map function, then flattens the input array elements into a new array. Output: 112, 52, 944 findindex() method This method returns the first in the given array that satisfies the provided…