Mar 13, 2025 · The constructor method is a special method of a class for creating and initializing an object instance of that class. Note: This page introduces the constructor syntax. For the constructor property present on all objects, see Object.prototype.constructor.

JavaScript has built-in constructors for all native objects: The Math() object is not in the list. Math is a global object. The new keyword cannot be used on Math. Did You Know? Use object literals {} instead of new Object(). Use array literals [] instead of new Array(). Use pattern literals /()/ instead of new RegExp().

Sep 24, 2024 · A constructor in JavaScript is a special function that is used to create and initialize objects. When we want to create multiple objects with similar properties and methods, the constructor is used as a blueprint to create similar objects.

The constructor() method is a special method for creating and initializing objects created within a class. The constructor() method is called automatically when a class is initiated, and it has to have the exact name "constructor", in fact, if you do not have a constructor method, JavaScript will add an invisible and empty constructor method.

The JavaScript constructor function creates and initializes objects. In this tutorial, you will learn about JavaScript constructor functions with the help of examples.

Jan 18, 2025 · The Javascript Set constructor is used to create Set objects. It will create a set of unique values of any type, whether primitive values or object preferences. It returns the new Set object. It mainly helps in creating a new set of objects which contains unique elements. Syntax:new Set()new Set(ite

Feb 15, 2025 · JavaScript constructors help developers create reusable, consistent, and well-structured objects. They simplify object initialization, support inheritance, and ensure cleaner code, making them essential in object-oriented programming.

Summary: in this tutorial, you’ll learn about the JavaScript constructor function and how to use the new keyword to create an object. Introduction to JavaScript constructor functions. In the JavaScript objects tutorial, you learned how to use the object literal syntax to create a new object.

Get the object constructor: The constructor property returns the function that created the Object prototype. For JavaScript objects the constructor property returns: function Object () { [native code] } constructor is an ECMAScript1 (JavaScript 1997) feature. It is supported in all browsers:

Jul 24, 2021 · Learn how to use JavaScript — a powerful and flexible programming language for adding website interactivity. A constructor is a function that initializes an object when the object is created.