javascript-constructors

Question 1

What does the new operator do?

Answer 1

1. new creates a blank js object
2. links constructors to new object by setting another object as its parent prototype
3. passes newly created object from step 1 as this context
4. returns this if the function doesn’t return an object

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

tests to see if the prototype property of a constructor appears anywhere in the prototype chain of an object