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JavaScript
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2019-09-13 11:27:52 +07:00
"use strict";
module.exports = function () {
var arr = [1, 2, 3, 4, 5, 6];
if (typeof arr.fill !== "function") return false;
return String(arr.fill(-1, -3)) === "1,2,3,-1,-1,-1";
};