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@Paul-Browne
Created December 10, 2019 09:52
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var array = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
var lastIndexOfOne = array.lastIndexOf(1);
var lastIndexOfFive = array.lastIndexOf(5);
var lastIndexOfTwenty = array.lastIndexOf(20);
console.log(lastIndexOfOne); // 9
console.log(lastIndexOfFive); // 5
console.log(lastIndexOfTwenty); // -1
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