javascript-constructors

Question 1

What does the new operator do?

Answer 1

The new operator lets developers create an instance of a user-defined object type or of one of the built-in object types that has a constructor function.
-https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/new

Question 2

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

Answer 2

prototype

Question 3

What does the instanceof operator do?

Answer 3

The instanceof operator tests to see if the prototype property of a constructor appears anywhere in the prototype chain of an object. The return value is a boolean value.
-https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/instanceof