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luxon.fromSeconds vs luxon.fromJSDate
(version: 0)
Comparing performance of:
fromJSDate vs fromSeconds
Created:
3 years ago
by:
Guest
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HTML Preparation code:
<script src="https://cdn.jsdelivr.net/npm/luxon@1.26.0/build/global/luxon.min.js"></script>
Script Preparation code:
window.dt = new Date(); window.ds = 1671994581;
Tests:
fromJSDate
luxon.DateTime.fromJSDate(window.dt);
fromSeconds
luxon.DateTime.fromSeconds(window.ds);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
fromJSDate
fromSeconds
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested. **Benchmark Overview** The benchmark compares the performance of two methods to create a Luxon `DateTime` object: 1. `luxon.DateTime.fromSeconds(window.ds)`: Creates a `DateTime` object from a Unix timestamp (seconds since January 1, 1970, 00:00:00 UTC). 2. `luxon.DateTime.fromJSDate(window.dt)`: Creates a `DateTime` object from a JavaScript `Date` object (`window.dt`). **Options Compared** The two options being compared are: * Using `fromSeconds` with a Unix timestamp * Using `fromJSDate` with a JavaScript `Date` object **Pros and Cons of Each Approach** 1. **fromSeconds**: * Pros: + More efficient, as it only requires accessing the timestamp value. + May be faster for very large or very small timestamps. * Cons: + Requires the Unix epoch (January 1, 1970, 00:00:00 UTC) to be known. + May not account for timezone differences or daylight saving time (DST) adjustments. 2. **fromJSDate**: * Pros: + Takes into account timezone and DST adjustments. + Can handle dates without a fixed epoch (e.g., Windows' internal date representation). * Cons: + More complex, as it needs to parse the `Date` object's internal representation. **Library: Luxon** Luxon is a modern JavaScript date library that provides a simple and consistent API for working with dates and times. It includes features like timezone handling, DST adjustments, and support for various date formats. **Special JS Feature: Arrow Functions (in older benchmark version)** It seems that in an older version of the benchmark, the `Script Preparation Code` included an arrow function (`() =>`) to create a new `Date` object. However, this feature was removed or deprecated in newer versions of JavaScript and Luxon. The current code uses the `window.dt` variable as a pre-existing `Date` object. **Other Alternatives** If you're interested in alternative date libraries for JavaScript, some popular options include: * Moment.js (although it's no longer actively maintained) * Day.js * Date-fns * js-joda Keep in mind that each library has its strengths and weaknesses, and the choice of which one to use depends on your specific needs and requirements.
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