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Javascript 2022-02-27 05:40:22
8.3.1. Common Array Methods // indexOf Examples (.indexOf)
//The general syntax for this method is: arrayName.indexOf(item) /*This method returns the index of the FIRST occurence of an item in the array. If the item is not in the array, -1 is returned.*/ let charles = [1, 7, 5, 9, 5]; let otherArray = ['hello',... Add solution