JavaScript Array from() Method Last Updated : 12 Nov, 2024 Summarize Comments Improve Suggest changes Share Like Article Like Report The Array.from() method is used to create a new array from any iterables like array, objects, and strings. JavaScript const a = Array.from("GeeksforGeeks"); console.log(a); Output[ 'G', 'e', 'e', 'k', 's', 'f', 'o', 'r', 'G', 'e', 'e', 'k', 's' ] SyntaxArray.from(object, mapFunction, thisValue);Parametersobject: This parameter holds that object that will convert into an arraymapFunction: This parameter is optional and used to call on each item of the array.thisValue: This parameter is optional, it holds the context to be passed as this is to be used while executing the mapFunction. If the context is passed, it will be used like this for each invocation of the callback function, otherwise undefined is used as default.Return valueIt returns a new array from the iterable passed as argument.We have a complete list of Javascript Array methods, to check those please go through this Javascript Array Complete reference article.Creating Array from SetWe can use Array.from() method to create or convert the given set to the array. JavaScript const s = new Set([10, 20, 30]); const a = Array.from(s); console.log(a); Output[ 10, 20, 30 ] Creating Array from ObjectIt can create array from the keys, values and also from each entry of the object. JavaScript const obj = { a: 10, b: 20, c : 30, d : 40, e : 50 }; const a1 = Array.from(Object.keys(obj)); const a2 = Array.from(Object.values(obj)); const a3 = Array.from(Object.entries(obj)); console.log(a1); console.log(a2); console.log(a3); Output[ 'a', 'b', 'c', 'd', 'e' ] [ 10, 20, 30, 40, 50 ] [ [ 'a', 10 ], [ 'b', 20 ], [ 'c', 30 ], [ 'd', 40 ], [ 'e', 50 ] ] We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript. Comment More infoAdvertise with us Next Article Java Collection toArray() Method K Kanchan_Ray Follow Improve Article Tags : JavaScript Web Technologies javascript-array JavaScript-Methods Similar Reads JavaScript Int8Array from() Method The Javascript Int8Array represents an array of twos-complement of 8-bit signed integers. By default, the contents of Int8Array are initialized to 0. from the () function of Int8Array used to create a new Int8Array from an array-like or iterable object. So when you want to convert an arrayLike or it 2 min read JavaTuples fromArray() method The fromArray() method in org.javatuples is used to instantiate a tuple in a semantically elegant way, with the values of the array, given as parameters. This method can be used to any tuple class object of javatuples library. It is a static function in each javatuple class and it returns the tuple 2 min read ArrayList toArray() method in Java with Examples The toArray() method of ArrayList is used to return an array containing all the elements in ArrayList in the correct order.Declaring toArray() methodpublic Object[] toArray() or public <T> T[] toArray(T[] a)Parameters: This method either accepts no parameters or it takes an array T[] as a para 3 min read Java Collection toArray() Method The toArray() method of Java Collection returns an array containing elements that are inside the calling collection. This article will discuss the toArray() method, its syntaxes, how it works, and some code examples. Syntax of toArray() MethodObject[] toArray();Return Type: The return type of the ab 3 min read Stack toArray() method in Java with Example The toArray() method of Stack class in Java is used to form an array of the same elements as that of the Stack. Basically, it copies all the element from a Stack to a new array. Syntax: Object[] arr = Stack.toArray() Parameters: The method does not take any parameters. Return Value: The method retur 2 min read AbstractSequentialList toArray() method in Java with Example The toArray() method of Java AbstractSequentialList is used to form an array of the same elements as that of the AbstractSequentialList. Basically, it copies all the element from a AbstractSequentialList to a new array. Syntax: Object[] arr = AbstractSequentialList.toArray() Parameters: The method d 2 min read Like