Benchmark: Math.max vs Reduce

Script Preparation code:

var values = new Array(5000);

for (let i = 0; i < values.length; ++i) {
    values[i] = i % 20;
}

Tests:

Method Math.max
return Math.max(...values);
Method Reduce
return values.reduce((a, b) => (a > b) ? a : b, 0);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Method Math.max
Method Reduce

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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I'll break down the benchmark and explain what's being tested.

**Benchmark Overview**

The benchmark is comparing the performance of two JavaScript methods: `Math.max` and `Array.prototype.reduce`. The test creates an array of 5,000 elements, where each element is a random integer between 0 and 19. This setup is designed to demonstrate how these two methods handle large datasets.

**Options Compared**

The benchmark is comparing the following options:

1. **Math.max**: A built-in JavaScript function that returns the largest value in an array.
2. **Array.prototype.reduce**: An array method that applies a reduction function to each element in the array, returning a single value.

**Pros and Cons of Each Approach**

**Math.max**

Pros:

* Simple and concise implementation
* Optimized for performance by the JavaScript engine

Cons:

* Limited flexibility (only finds the maximum value)
* May not work as expected with certain data types or edge cases

**Array.prototype.reduce**

Pros:

* Flexible and powerful reduction function
* Can be used to find the maximum, minimum, sum, product, or perform other aggregation operations

Cons:

* More complex implementation compared to Math.max
* Requires explicit handling of edge cases (e.g., empty arrays)

**Library Used: None**

In this benchmark, no specific library is being tested. The comparison focuses solely on the built-in JavaScript methods `Math.max` and `Array.prototype.reduce`.

**Special JS Feature/ Syntax: None**

There are no special JavaScript features or syntaxes being used in this benchmark.

**Other Alternatives**

If you're interested in comparing other JavaScript methods for finding the maximum value, some alternatives could include:

* Using a loop to iterate through the array elements
* Using `Math.max` with a custom reduction function (e.g., using `reduce` on an array of indices)
* Using a library like Lodash or Ramda, which provide more advanced aggregation functions

In this specific benchmark, the comparison between `Math.max` and `Array.prototype.reduce` is relevant because they are two common approaches to finding the maximum value in an array.

Related benchmarks:

Math.max vs Reduce (version: 0)

Comparing the performance of Math.max vs Reduce on an array object.

Comparing performance of: Method Math.max vs Method Reduce

Created: 3 years ago by: Guest

Jump to the latest result

Method Math.max

Method Reduce

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):