update js
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@@ -176,4 +176,8 @@ x ??= y
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let userAge = null;
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userAge ??= 18;
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alert(userAge) // 18
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```
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```
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🚀 **Источник if-else: [https://learn.javascript.ru/ifelse](https://learn.javascript.ru/ifelse)**
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🚀 **Источник logical ops: [https://learn.javascript.ru/logical-operators](https://learn.javascript.ru/logical-operators)**
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🚀 **Источник nullish ops: [https://learn.javascript.ru/nullish-operators](https://learn.javascript.ru/nullish-operators)**
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