What new M圜lass() will return is an object with only the properties assigned to the this object and in the prototype object of the "class. The purpose of a constructor is to create a new object and set values for any existing object properties. You can have the same properties as the constructor function or add a new property to one. In JavaScript, a constructor gets called when an object is created using the new keyword. Each object created from the constructor function is unique. As you can see, you can simulate private (both static and instance) members using closures. What is a Constructor in JavaScript A constructor is a special function that creates and initializes an object instance of a class. The return value is a reference to the function, not the name of the. The map is a data structure that stores elements as a key, value pair. In JavaScript, the constructor property returns the constructor function for an object. Here's a template I sometimes use for OOP-similar behavior in JavaScript. The Map () constructor is used to create Map objects in JavaScript.
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