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Date.parse vs new Date - Fork
(version: 0)
Comparing performance of:
new Date vs Date.parse
Created:
4 years ago
by:
Registered User
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Tests:
new Date
new Date('2022-03-18T10:57:06.000Z');
Date.parse
Date.parse('2022-03-18T10:57:06.000Z');
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
new Date
Date.parse
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 what's being tested in this benchmark. **Overview** The benchmark compares the performance of two ways to parse date strings: `Date.parse()` and creating a new `Date` object using the `new Date()` constructor. **Options Compared** The two options being compared are: 1. **`new Date('2022-03-18T10:57:06.000Z')`**: This creates a new `Date` object by passing a string representation of the date to the `new Date()` constructor. 2. **`Date.parse('2022-03-18T10:57:06.000Z')`**: This parses a string representation of the date using the `Date.parse()` method, which returns a number representing the timestamp. **Pros and Cons** * Creating a new `Date` object with `new Date()`: This approach can be more readable and intuitive, as it clearly conveys the intent of creating a new date object. However, it may incur additional overhead due to the creation of a new object. * Using `Date.parse()`: This approach is often faster and more efficient, but its use can be less intuitive, especially for developers who are not familiar with this method. **Library/Functionality** There is no specific library being used in this benchmark. However, it's worth noting that the `Date` object and its methods (`new Date()` and `Date.parse()`) are part of the JavaScript standard library. **Special JS Features/Syntax** This benchmark does not use any special JavaScript features or syntax beyond what is typically available in modern browsers. **Other Considerations** When comparing performance, it's essential to consider factors such as: * Browser version: The test was run on Chrome 99, which may affect the results. * Device platform and operating system: Running the test on a desktop device with Mac OS X 10.15.7 affects the results. **Alternatives** Other alternatives for parsing date strings in JavaScript include: * Using a dedicated library like moment.js or Luxon. * Utilizing a library like dayjs, which provides a more modern and efficient approach to working with dates. * Implementing custom date parsing logic using regular expressions or other techniques.
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new Date(Date.parse()) vs new Date
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