javascript 数组求和/求积/求最大值

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javascript  数组求和/求积/求最大值

          var shuzu = [1, 2, 3, 4, 5];
          var sum = shuzu.reduce(function (x, y) { return x + y; });
          var product = shuzu.reduce(function (x, y) { return x * y; });
          var max = shuzu.reduce(function (x, y) { return x > y ? x : y; });