javascript-constructors

Question 1

What does the new operator do?

Answer 1

the new operator creates an instance of a user-defined object type or of one of the built-in object types that has a constructor function.

Question 2

What property of JavaScript functions can store shared behavior for instances created with new?

Answer 2

prototype property. (syntax: Function.prototype.some property = value).

Question 3

What does the instanceof operator do?

Answer 3

the instanceof operator tests if the prototype property of the constructor appears in the prototype chain of an object.