Benchmark: setTime vs set of all properties

Script Preparation code:

var ticksArray = [1627658700000, 1628348357000, 1628333957000, 1628343957000, 1628333157000, 1628333257000, 1628333357000, 1628333457000, 1628333557000, 1628333657000, 1628333757000, 1628333857000, 1628333917000, 1628333927000];

Tests:

setTime
ticksArray.forEach((ticks) => { const date = new Date(ticks); const computterOffset = date.getTimezoneOffset() * this.milisecondsInMinute; date.setTime(date.getTime() + computterOffset + 10*3600000) })
set for all props
ticksArray.forEach((ticks) => { const date = new Date(ticks); date.setMonth(date.getUTCMonth()); date.setDate(date.getUTCDate()); date.setHours(date.getUTCHours() + this.timezoneOffset); })

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
setTime
set for all props

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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**Overview of the Benchmark**

The provided benchmark measures the performance difference between two approaches to set the date and time on a JavaScript object: `setTime` vs setting individual properties (`set for all props`). The test uses a fixed array of timestamps and iterates over it, creating a new `Date` object for each timestamp. The benchmark then compares the execution time for both approaches.

**Options Compared**

There are two options compared in this benchmark:

1. **`setTime`**: This method sets the time value of a `Date` object using the `setTime` method.
2. **Setting individual properties (`set for all props`)**: This approach sets each property individually, such as `setMonth`, `setDate`, `setHours`, etc.

**Pros and Cons of Each Approach**

1. **`setTime`**:
	* Pros: Simple, concise, and well-supported by most browsers.
	* Cons: May not be as efficient as setting individual properties, especially for large date ranges or complex date calculations.
2. **Setting individual properties (`set for all props`)**:
	* Pros: More flexible and allows for more precise control over the date and time values. Can be faster for certain use cases.
	* Cons: More verbose, requires setting each property individually, and may not be as well-supported by older browsers.

**Library Used**

There is no explicit library mentioned in the benchmark definition or test cases. However, it's likely that the `Date` object and its methods are part of the built-in JavaScript API.

**Special JS Feature/Syntax**

The benchmark uses a feature of the `Date` object called `getUTC...()` methods, which return values in UTC time zone. These methods are used to set the date and time on the `Date` object without affecting the local time zone offset. This is an important consideration when working with dates and times in JavaScript.

**Other Considerations**

When choosing between these approaches, consider the specific requirements of your application:

* If you need more precise control over the date and time values or need to handle complex date calculations, setting individual properties (`set for all props`) might be a better choice.
* If simplicity and conciseness are important, `setTime` is likely a better option.

**Alternative Approaches**

Other approaches could include:

1. Using `Date.now()` and calculating the offset manually.
2. Using a library like Moment.js or Luxon to handle dates and times.
3. Using a different method, such as setting the date and time using `setFullYear`, `setMonth`, etc.

Keep in mind that these alternatives might have their own trade-offs in terms of performance, complexity, and compatibility with older browsers.

Related benchmarks:

setTime vs set of all properties (version: 0)

Comparing performance of: setTime vs set for all props

Created: 4 years ago by: Guest

Jump to the latest result

setTime

set for all props

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):