Little mistake in the data structure part of js course

JavaScript
1

this challenge is talking about the indexOf method, which returns -1 for non-existing elements but returns the index if the element exists on an array, the comment on the example given in the explanation is wrong: (…indexOf('pears') returns 1… )it should return 4.
the link to the challenge

2

It returns the index of the first occurance of the ele.ment. Look at index 1 in the array

3

oh there are 2 strings ‘pear’.
sorry

4

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