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Fix minor typo #3863

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Fix minor typo #3863

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4 changes: 2 additions & 2 deletions 1-js/09-classes/06-instanceof/article.md
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Expand Up @@ -55,7 +55,7 @@ The algorithm of `obj instanceof Class` works roughly as follows:
For example:

```js run
// setup instanceOf check that assumes that
// setup instanceof check that assumes that
// anything with canEat property is an animal
class Animal {
static [Symbol.hasInstance](obj) {
Expand All @@ -68,7 +68,7 @@ The algorithm of `obj instanceof Class` works roughly as follows:
alert(obj instanceof Animal); // true: Animal[Symbol.hasInstance](obj) is called
```

2. Most classes do not have `Symbol.hasInstance`. In that case, the standard logic is used: `obj instanceOf Class` checks whether `Class.prototype` is equal to one of the prototypes in the `obj` prototype chain.
2. Most classes do not have `Symbol.hasInstance`. In that case, the standard logic is used: `obj instanceof Class` checks whether `Class.prototype` is equal to one of the prototypes in the `obj` prototype chain.

In other words, compare one after another:
```js
Expand Down