Preview:
function Animal(){ 
  this.type = "animal"
}
   
function Dog(){ 
  this.name = "dog"
}
 
Dog.prototype = new Animal()
 
var PavlovPet = new Dog(); 
 
console.log(PavlovPet.__proto__ === Dog.prototype)
console.log(Dog.prototype.__proto__ === Animal.prototype)
downloadDownload PNG downloadDownload JPEG downloadDownload SVG

Tip: You can change the style, width & colours of the snippet with the inspect tool before clicking Download!

Click to optimize width for Twitter