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date-comparison-test-rvi
(version: 0)
Comparing performance of:
to iso vs to utc vs Gettime vs Plus trick
Created:
8 years ago
by:
Guest
Jump to the latest result
HTML Preparation code:
<script> var d1 = new Date(2018,0,5,10,00,52), d2 = new Date(2018,0,5,10,00,52) </script>
Tests:
to iso
d1.toISOString() === d2.toISOString()
to utc
d1.toUTCString() === d2.toUTCString()
Gettime
d1.getTime() === d2.getTime()
Plus trick
+d1 === +d2
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
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Test case name
Result
to iso
to utc
Gettime
Plus trick
Fastest:
N/A
Slowest:
N/A
Latest run results:
No previous run results
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the provided JSON and explain what's being tested, compared, and considered. **Benchmark Definition** The benchmark definition is a JSON object that represents the microbenchmark to be executed. In this case, there are four test cases: 1. `d1.toISOString() === d2.toISOString()`: Compares the ISO-formatted string representation of two dates. 2. `d1.toUTCString() === d2.toUTCString()`: Compares the UTC-formatted string representation of two dates. 3. `d1.getTime() === d2.getTime()`: Compares the number of milliseconds since the Unix Epoch (January 1, 1970) between two dates. 4. `+d1 === +d2`: Compares the numeric value of the first date (`d1`) with the second date (`d2`). **Options Compared** The test cases compare different methods for comparing dates: * `toISOString()` and `toUTCString()` are formatting options that produce strings in a specific format. * `getTime()` is a method that returns the number of milliseconds since the Unix Epoch. **Pros and Cons of Different Approaches** 1. **`toISOString()`**: Pros: * Produces a standardized string representation of dates. * Can be used for comparison. Cons: * May not be suitable for all use cases (e.g., when working with non-standard date formats). 2. **`toUTCString()`**: Pros: * Produces a UTC-formatted string representation of dates. * Can be used for comparison. Cons: * May not be suitable for dates outside the UTC time zone. 3. **`getTime()`**: Pros: * Provides a numeric value that can be compared directly. * Fast and efficient. Cons: * Does not preserve date format or timezone information. **Library** The `Date` class is used in these test cases, which is a built-in JavaScript library. The `Date` object represents a specific point in time and provides various methods for manipulating dates. **Special JS Feature/Syntax** No special JavaScript features or syntax are used in this benchmark (e.g., async/await, promises, ES6+ classes). However, the use of `==` for comparison might be considered outdated by modern coding standards, which recommend using strict equality (`===`) instead. **Alternatives** Other alternatives for comparing dates include: * Using a date formatting library like Moment.js or Luxon. * Creating a custom function to normalize and compare dates. * Using a numerical representation of dates (e.g., Unix timestamps) when working with dates in code. Overall, the benchmark seems well-structured, and the options compared provide valuable insights into different approaches for comparing dates.
Related benchmarks:
Date comparison
Date comparation
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