JavaScript Array with() Method Last Updated : 15 Mar, 2024 Comments Improve Suggest changes Like Article Like Report The with() method in JavaScript Array returns a new array with the element at the given index replaced with the given value. Syntax:input_array.with(index, value)Parameters: Index: RangeError is thrown if the provided index does not exist in the array. value: It is the value that is assigned to the specified index position.Example 1: Consider a JavaScript array with 5 elements and replace the value present at Index position - 4 with 100. JavaScript let actual_array = [60, 78, 90, 34, 67]; console.log("Existing Array: ", actual_array); // with() let final_array = actual_array.with(4, 100); console.log("Final Array: ", final_array); Output: Existing Array: [60, 78, 90, 34, 67]Final Array: [60, 78, 90, 34, 100]Example 2: Let's apply map() function to this function and replace the element present at index - 4 with 100 multiplied by 2. JavaScript let actual_array = [60, 78, 90, 34, 67]; console.log("Existing Array: ", actual_array); // with() let final_array = actual_array .with(4, 100) .map((x) => x * 2); console.log("Final Array: ", final_array); Output: Existing Array: [60, 78, 90, 34, 67]Final Array: [60, 78, 90, 34, 200] Comment More infoAdvertise with us Next Article JavaScript Array with() Method sravankumar_171fa07058 Follow Improve Article Tags : JavaScript Web Technologies Similar Reads Transform JavaScript Arrays using Array with() Method In the ever-evolving world of JavaScript, developers are constantly looking at ways and means that can simplify their code and increase their performance. One such hidden gem in the JavaScript arsenal is the with() method for Arrays. Introduced in ECMAScript 2023, this method has quickly become a fa 8 min read Java Arrays compare() Method with Examples The Arrays compare() method in Java is a part of the java.util package to compare arrays lexicographically (dictionary order). This method is useful for ordering arrays and different overloads for different types including boolean, byte, char, double, float, int, long, short, and Object arrays. Exam 3 min read JavaScript TypedArray.prototype.with() Method A new method TypedArray.prototype.with(), was introduced in ECMAScript 2023 (ES2023) to provide a means of modifying an element in a particular TypedArray without altering the underlying array directly, it generates a new TypedArray with the required alteration and then returns it. TypedArray instan 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 CopyOnWriteArrayList set() method in Java with Examples The set(E e) method in the class CopyOnWriteArrayList class replaces the element at the specified index with the element provided as a parameter to the method. The method returns the element that has been replaced by the new element.Syntax: public E set(int index, E element) Parameters: The method t 2 min read CopyOnWriteArrayList toArray() method in Java The toArray() method of CopyOnWriteArrayList is used to return an array containing all the elements in CopyOnWriteArrayList in the correct order. Syntax: public Object[] toArray() or public <T> T[] toArray(T[] a) Parameters: This method either accepts no parameters or it takes an array T[] a a 2 min read CopyOnWriteArraySet toArray() method in Java with Example toArray() The Java.util.concurrent.CopyOnWriteArraySet.toArray() method returns an array containing all the elements in the set in proper sequence i.e. from first to last. The returned array will be safe as a new array is created (hence new memory is allocated). Thus the caller is free to modify the 3 min read String Arrays in Java A String Array in Java is an array that stores string values. The string is nothing but an object representing a sequence of char values. Strings are immutable in Java, this means their values cannot be modified once created.When we create an array of type String in Java, it is called a String Array 5 min read How to Return an Array in Java? An array is a data structure that consists of a group of elements of the same data type such that each element of the array can be identified by a single array index or key. The elements of the array are stored in a way that the address of any of the elements can be calculated using the location of 5 min read LinkedList toArray() Method in Java In Java, the toArray() method is used to convert a LinkedList into an Array. It returns the same LinkedList elements but in the form of an Array only.Example: Here, we use toArray() to convert a LinkedList into an Array of Integer.Java// Java Program to Demonstrate how to use toArray() method // to 4 min read Like