lastIndexOf() - JavaScript Array Methods

lastIndexOf() is similar to indexOf(), except that it searches from the end of the array instead of the beginning. Like indexOf() it will return the index of the value. Because lastIndexOf() searches from the end of the array, if there are duplicate values in the array, it may find a different instance of that value than indexOf() would find. This is because once it finds a value, it stops searching, and simply returns the index of the first occurrence of that value that it found, in this case, when starting from the end of the array. Like indexOf() we can provide the index by which we want to start searching, and if the value is not found, it will return -1 as a result.

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