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Author: Admin | 2025-04-28
JavaScript Array Methods and Properties Name Description [ ] Creates a new Array new Array() Creates a new Array at() Returns an indexed element of an array concat() Joins arrays and returns an array with the joined arrays constructor Returns the function that created the Array prototype copyWithin() Copies array elements within the array, to and from specified positions entries() Returns a key/value pair Array Iteration Object every() Checks if every element in an array pass a test fill() Fill the elements in an array with a static value filter() Creates a new array with every element in an array that pass a test find() Returns the value of the first element in an array that pass a test findIndex() Returns the index of the first element in an array that pass a test findLast() Returns the value of the last element in an array that pass a test findLastIndex() Returns the index of the last element in an array that pass a test flat() Concatenates sub-array elements flatMap() Maps all array elements and creates a new flat array forEach() Calls a function for each array element from() Creates an array from an object includes() Check if an array contains the specified element indexOf() Search the array for an element and returns its position isArray() Checks whether an object is an array join() Joins all elements of an array into a string keys() Returns a Array Iteration Object, containing the keys of the original array lastIndexOf() Search the array for an element, starting at the end, and returns its position length Sets or returns the number of elements in an array map() Creates a new array with the result of calling a function for each array element of() Creates an array from a number of arguments pop() Removes the last element of an array, and returns that element prototype Allows you to add properties and methods to an Array object push() Adds new elements to the end of an array, and returns the new length reduce() Reduce the values of an array to a single value (going left-to-right) reduceRight() Reduce the values of an array to a single value (going right-to-left) reverse() Reverses the order of the elements in an array shift() Removes the first element of an array, and returns that element slice() Selects a part of an array, and returns the new array some() Checks if any of the elements in an array pass a test sort() Sorts the elements of an array splice() Adds or Removes array elements toReversed() Reverses the order of array elements (to a new array) toSorted() Sorts the elements of an array (to a new array) toSpliced() Adds or Removes array elements (to
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