Benchmark: TestISOvsConcat2

Script Preparation code:

var date = new Date();

function toISOString(date) {
	return date.toISOString();
}

function concat(date) {
    var ms = date.getMilliseconds();
   	var s = date.getSeconds();
   	var M = date.getMinutes();
   	var h = date.getHours();
 	var d = date.getDate();
	var m = date.getMonth() + 1;
	var y = date.getFullYear();
    var second = s <= 9 ? '0' + s : '' + s;
    var minute = M <= 9 ? '0' + M : '' + M;
    var hour = h <= 9 ? '0' + h : '' + h;
    var day = d <= 9 ? '0' + d : '' + d;
    var month = m <= 9 ? '0' + m : '' + m;
    var year = '' + y;
	return day + '-' + month + '-' + year + 'T' + hour + ':' + minute + ':' + second + '.' + ms;
}

Tests:

1
for (var i=0; i<10000; ++i) { toISOString(date); }
2
for (var i=0; i<10000; ++i) { concat(date); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1
2

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser/OS: Chrome 122 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
1	188.4 Ops/sec
2	606.8 Ops/sec

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

LLMs can make mistakes. Check important info.

Measuring JavaScript performance is crucial for optimizing code and ensuring compatibility across different browsers and environments.

**Benchmark Overview**

The provided JSON defines two benchmark tests:

1. `TestISOvsConcat2`: This benchmark compares the performance of two date formatting functions: `toISOString()` and `concat()`. The script preparation code defines these two functions, which are then executed in a loop 10,000 times.
2. Individual test cases:
	* Test case 1: Executes `toISOString(date)` 10,000 times.
	* Test case 2: Executes `concat(date)` 10,000 times.

**Options Compared**

The benchmark compares the performance of two approaches:

1. **`toISOString()`**: A built-in JavaScript function that converts a date object to an ISO-formatted string.
2. **`concat()`**: A custom implementation that manually formats the date into an ISO-compatible string.

**Pros and Cons of Each Approach**

1. **`toISOString()`**:
	* Pros: Fast, efficient, and widely supported by browsers and Node.js.
	* Cons: May not be compatible with older browsers or environments that don't support this function.
2. **`concat()`**:
	* Pros: Customizable, allowing for more control over the formatting process.
	* Cons: Slower due to manual string manipulation, potentially leading to performance issues.

**Library and Purpose**

None of the benchmark tests use a specific library. However, the `Date` object is used, which is a built-in JavaScript object.

**Special JS Feature or Syntax**

The `toISOString()` function uses the ISO 8601 date format standard (RFC 2822). This standard provides a widely accepted format for representing dates and times in a string format.

**Other Alternatives**

If you're looking to optimize date formatting performance, consider using the following alternatives:

* **`Date.toISOString()` with a custom format**: You can use the `toISOString()` function with a custom format string to achieve more control over the output.
* **`Moment.js` or other libraries**: Libraries like Moment.js provide more advanced date and time manipulation capabilities, including formatting options.
* **Browser-specific optimizations**: Depending on your target browser versions, you might need to optimize for specific features or performance characteristics.

**Benchmark Preparation Code**

The script preparation code is provided as a JSON object:
```json
{
  "Name": "TestISOvsConcat2",
  "Description": null,
  "Script Preparation Code": "...",
  "Html Preparation Code": null
}
```
This code defines the `toISOString()` and `concat()` functions, which are then used in the benchmark tests.

Related benchmarks:

TestISOvsConcat2 (version: 0)

Comparing performance of: 1 vs 2

Created: 2 years ago by: Guest

Jump to the latest result

1

2

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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