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Constructor

A constructor belongs to a particular class object that is instantiated. The constructor initializes this object and can provide access to its private information. The concept of a constructor can be applied to most object-oriented programming languages. Essentially, a constructor in JavaScript is usually declared at the instance of a class .

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Constructor

Syntax

js
                                        
                                            // This is a generic default constructor class Default
                                            function
                                            Default
                                            (
                                            )
                                            {
                                            }
                                            // This is an overloaded constructor class Overloaded
                                            // with parameter arguments
                                            function
                                            Overloaded
                                            (
                                            arg1,
                                            arg2,
                                            /* …, */
                                            argN)
                                            {
                                            }
                                        
                                    

To call the constructor of the class in JavaScript, use a new operator to assign a new object reference to a variable .

js
                                        
                                            function
                                            Default
                                            (
                                            )
                                            {
                                            }
                                            // A new reference of a Default object assigned to a
                                            // local variable defaultReference
                                            const
                                            defaultReference =
                                            new
                                            Default
                                            (
                                            )
                                            ;
                                        
                                    

See also

Updated on April 20, 2024 by Datarist.