Using includes() Method: If array contains an object/element can be determined by using includes() method . This method returns true if the array contains the object/element else return false.
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includes() method is intentionally generic. It does not require this value to be an Array object, so it can be applied to other kinds of objects (e.g. array-like objects).
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indexOf() The Array#indexOf() function is a common alternative to includes() . The indexOf() function returns the first index in the array at which it found valueToFind , or -1 otherwise.
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In JavaScript, includes() method determines whether a string contains the given characters within it or not . This method returns true if the string contains the characters, otherwise, it returns false.7 Eki 2021
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You should absolutely use . includes() …
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