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JavaScript. Метод includes()

Метод includes() в JavaScript используется для проверки наличия определенного элемента в массиве или строке. Он возвращает булевое значение, указывающее, найден ли элемент.

Для использования метода includes(), вызовите его на массиве или строке, над которыми хотите выполнить поиск. Передайте в качестве аргумента элемент, который вы ищете. Метод вернет true, если элемент найден, и false, если элемент отсутствует.

В приведенном примере у нас есть массив ['яблоко', 'груша', 'апельсин', 'банан']. Мы вызываем метод includes('груша'), чтобы проверить, содержит ли массив элемент 'груша'. Метод возвращает true, так как 'груша' присутствует в массиве. Затем мы вызываем метод includes('слива'), чтобы проверить, содержит ли массив элемент 'слива'. Метод возвращает false, так как 'слива' отсутствует в массиве. Результаты выводятся в консоль.

JavaScript
JavaScript. Метод includes()

Метод includes() в JavaScript используется для проверки наличия определенного элемента в массиве или строке. Он возвращает булевое значение, указывающее, найден ли элемент.

Для использования метода includes(), вызовите его на массиве или строке, над которыми хотите выполнить поиск. Передайте в качестве аргумента элемент, который вы ищете. Метод вернет true, если элемент найден, и false, если элемент отсутствует.

В приведенном примере у нас есть массив ['яблоко', 'груша', 'апельсин', 'банан']. Мы вызываем метод includes('груша'), чтобы проверить, содержит ли массив элемент 'груша'. Метод возвращает true, так как 'груша' присутствует в массиве. Затем мы вызываем метод includes('слива'), чтобы проверить, содержит ли массив элемент 'слива'. Метод возвращает false, так как 'слива' отсутствует в массиве. Результаты выводятся в консоль.
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JavaScript. Метод includes()

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