Question about prototype

JavaScript
1

image
image1763×821 203 KB

if I modify
“Dog.prototype.isPrototypeOf(beagle)”
to
“Dog.prototype.isPrototypeOf(beagle.prototype)”,
it turns out wrong, and if I modify
“Object.prototype.isPrototypeOf(Dog.prototype)”
to
“beagle.prototype.isPrototypeOf(Dog.prototype)”
it turns out wrong, too, why? Anybody can help me with this?

Challenge: Understand the Prototype Chain

Link to the challenge:

2

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