Can someone help me crack this javascript please? it's not passing

Tell us what’s happening:

**Your code so far**


function dog() { = "Rupert";
  this.color = "brown";
  this.numLegs = 4;
// Add your code below this line

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:69.0) Gecko/20100101 Firefox/69.0.

Link to the challenge:

You don’t need = "mark"; hound.color = "red"; hound.numLegs = 40;
The constructor already added those values to the new dog.

thanks for pointing it out, can you help solve it ?

I was trying to help you figure it out on your own.
let hound = new Dog();