JavaScript-Array-Methods

Idk who need this, but I think this Repo can help 🙂

• .pop()removes LAST element of array and returns that removed element. Changes the original array.
• .push()adds one or more element to the BACK of array. Changes the original array. Returns the length of the changed array.
• .shift()removes the FIRST element of an array, and returns the removed element. Changes the original array and its length.
• .unshift()adds one or more elements to the START of an array, and returns the new length of the array.
• .slice()selects part of array & returns a COPY of all elements selected from start index to end index. The original array does NOT change.
• .splice()removes, replaces, or adds new element to the array. Returns array of the deleted elements. Changes the original array.
• .join()returns a NEW STRING of array elements either separated by commas or a specified separator.
• .toString()converts an array into a string.
• .forEach()loops through the elements of an array. For every array element, it executes a callback function.
• .filter()returns a NEW array that 'filters' out elements from an array. If element meets condition from callback, it's added to new array.
• .includes()checks if the array includes the item passed to the method. It returns either "true" or "false".
• .map()creates a NEW array with the return value of the callback function called on each element.
• Array.from()creates a NEW array from an array-like/iterable object.
• .concat()merges two or more arrays into a NEW array.
• .reverse()reverses an array; the first element becomes last, and the last becomes first. It changes the original array.
• .sort()sorts the elements of an array in ascending order of UTF-16. It cahnges the original array, and returns the sorted array.
• .every()tests if every element in an array passes the test implemented by the callback function. It returns a boolean value.
• .some()returns 'true' if ANY (some) element in the array passes the test implemented by the callback function.
• .reduce()reduces the array into a single element. It passes the return value of the previous element in the callback function.
• .findIndex()returns the index of the first element in the array that satisfies the callback function.