A constructor is a function that creates and initializes a class object instance. When an object is formed with the new keyword in JavaScript, a constructor is invoked. A constructor's job is to build a new object and set values for any attributes that already exist.
A constructor function is used to build objects in JavaScript. For example, this.name = 'John,' this.age = 23 / constructor function function Person () / make a new object const person = new Person(); execute code Person() is an object constructor function in the example above.
A default constructor is constructed if you don't define one for the class. The default constructor is an empty function that makes no changes to the instance. A JavaScript class can have up to one constructor at the same time.
A constructor is a code block that sets up a freshly constructed object. A function is a collection of statements that can be called by its name at any point in the program to execute a specified purpose. The constructor and the class have the same name. The name of the function should differ from the name of the class.
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