![]() ![]() ![]() When searching for an object, includes() checks whether the provided object reference matches the one in the array. ![]() If we pass in F, the adequate message is printed: Element is not presentĬhecking if Array of Objects Includes Object some() Function ![]() We can use this to alter code flow easily: let grades = In the second instance, the return value signifies that the element is not present. In the first instance, the element is present, and its position is returned. In cases where we need the exact location of the element we're looking for, we can use the indexOf(elem) method, which looks for elem in the specified array and returns the index of its first occurrence, and -1 if the array does not contain elem.įor example, we can look for the first occurrence of a grade in an array containing grades: let grades = The function returns a boolean value, signifying the value's presence or lack thereof.
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