Update article.md
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@ -90,7 +90,7 @@ There are 7 data types:
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- `boolean` for logical values: `true/false`,
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- `boolean` for logical values: `true/false`,
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- `null` -- a type with a single value `null`, meaning "empty" or "does not exist",
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- `null` -- a type with a single value `null`, meaning "empty" or "does not exist",
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- `undefined` -- a type with a single value `undefined`, meaning "not assigned",
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- `undefined` -- a type with a single value `undefined`, meaning "not assigned",
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- `object` and `symbol` -- for complex data structures and unique identifiers, we didn't learn them yet.
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- `object` and `symbol` -- for complex data structures and unique identifiers, we haven't learnt them yet.
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The `typeof` operator returns the type for a value, with two exceptions:
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The `typeof` operator returns the type for a value, with two exceptions:
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```js
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```js
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