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Fix possibly outdated note in 1.9.6 (instanceof)

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It seems there are no polymorphic functions in this chapter.
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Vse Mozhe Buty 2020-10-29 17:34:23 +02:00 • committed by GitHub
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1-js/09-classes/06-instanceof/article.md
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@ -2,7 +2,7 @@
The `instanceof` operator allows to check whether an object belongs to a certain class. It also takes inheritance into account.
Such a check may be necessary in many cases. Here we'll use it for building a *polymorphic* function, the one that treats arguments differently depending on their type.
Such a check may be necessary in many cases. For example, it can be used for building a *polymorphic* function, the one that treats arguments differently depending on their type.
## The instanceof operator [#ref-instanceof]