Benchmark: Math.random() or new Date().getTime()

Tests:

new Date().getTime()
new Date().getTime()
Math.random()
Math.random()

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
new Date().getTime()
Math.random()

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):

LLMs can make mistakes. Check important info.

Let's dive into the world of MeasureThat.net and explore what's being tested in this benchmark.

**Benchmark Definition**

The provided JSON defines two benchmarks:

1. `Math.random() or new Date().getTime()`: This is the overall benchmark definition, which includes both tests.
2. Two individual test cases:
	* `new Date().getTime()`
	* `Math.random()`

These test cases are comparing two different methods for generating a random number in JavaScript.

**Options Compared**

The options being compared are:

1. **`new Date().getTime()`**: Returns the current timestamp in milliseconds since the Unix epoch (January 1, 1970).
2. **`Math.random()`**: Generates a random floating-point number between 0 and 1.

**Pros and Cons of Each Approach**

1. **`new Date().getTime()`**:
	* Pros:
		+ Can be used to generate high-quality random numbers.
		+ Easy to understand and implement.
	* Cons:
		+ May not be suitable for cryptographic purposes due to potential bias.
2. **`Math.random()`**:
	* Pros:
		+ Widely supported across browsers and platforms.
		+ Suitable for most non-cryptographic use cases.
	* Cons:
		+ Can produce predictable or biased results, especially in certain edge cases.

**Library Used**

There is no specific library mentioned in the benchmark definition. However, `Math.random()` is a built-in JavaScript function that returns a pseudo-random number.

**Special JS Feature/Syntax**

There are no special JS features or syntax used in this benchmark.

**Other Considerations**

When choosing between these two methods, consider your specific use case and requirements:

* If you need high-quality random numbers for cryptographic purposes, `new Date().getTime()` might not be the best choice.
* For most non-cryptographic use cases, `Math.random()` is a suitable and efficient option.

**Alternatives**

If you're looking for alternative methods to generate random numbers in JavaScript, consider:

1. **`Crypto.getRandomValues()`**: A more secure and reliable method for generating cryptographically secure random numbers.
2. **`Web Crypto API's `randomUint8()``**: Another approach for generating cryptographically secure random numbers.

Keep in mind that these alternatives may have slightly different usage patterns or requirements depending on your specific use case.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.3 Mobile/15E148 Safari/604.1

Browser/OS: Mobile Safari 16 on iOS 16.3

View result in a separate tab

Test name	Executions per second
new Date().getTime()	10120968.0 Ops/sec
Math.random()	17150832.0 Ops/sec

Related benchmarks:

Math.random() or new Date().getTime() (version: 0)

123

Comparing performance of: new Date().getTime() vs Math.random()

Created: one year ago by: Guest

Jump to the latest result

new Date().getTime()

Math.random()

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 26 days ago):