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Comparison of date creation methods
(version: 0)
new Date(value) new Date(dateString) new Date(year, monthIndex, day)
Comparing performance of:
Timestamp vs String vs year, month, day
Created:
2 years ago
by:
Registered User
Jump to the latest result
Tests:
Timestamp
new Date(1712234585792)
String
new Date('2024-4-4')
year, month, day
new Date(2024, 3, 4)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
Timestamp
String
year, month, day
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36
Browser/OS:
Chrome 123 on Windows
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=516706" width="100%" height="500px"></iframe>
Test name
Executions per second
Timestamp
3464324.2 Ops/sec
String
1296727.4 Ops/sec
year, month, day
1395854.9 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the Benchmark Definition and test cases. **Benchmark Definition** The benchmark definition is a JSON object that describes the experiment being run. In this case, it compares three different ways to create dates in JavaScript: 1. `new Date(value)` (where `value` is a timestamp) 2. `new Date(dateString)` (where `dateString` is a string representing a date) 3. `new Date(year, monthIndex, day)` (where `year`, `monthIndex`, and `day` are numeric values) The script preparation code and HTML preparation code fields are empty, indicating that no custom JavaScript or HTML code needs to be executed before running the benchmark. **Test Cases** There are three test cases, each representing one of the above date creation methods. Here's a brief explanation of each: 1. `new Date(1712234585792)` - This test case creates a date object from a timestamp. 2. `new Date('2024-4-4')` - This test case creates a date object from a string representing a date in the ISO 8601 format. 3. `new Date(2024, 3, 4)` - This test case creates a date object using the year-month-day components. **Options Compared** In this benchmark, three different options are being compared: * Creating dates using `new Date(value)` * Creating dates using `new Date(dateString)` * Creating dates using `new Date(year, monthIndex, day)` These options differ in how they parse and interpret the input values. **Pros and Cons of Each Approach** Here's a brief summary of the pros and cons of each approach: 1. **`new Date(value)`**: Pros - simple to use, fast execution time. Cons - may not be accurate for all types of inputs (e.g., non-numeric timestamps). 2. **`new Date(dateString)`**: Pros - flexible input format, good for parsing dates from various string formats. Cons - slower execution time compared to `new Date(value)`. 3. **`new Date(year, monthIndex, day)`**: Pros - precise control over date components, fast execution time. Cons - requires manual handling of month indices and day ranges. **Library Used** None are explicitly mentioned in the benchmark definition or test cases. However, it's likely that a modern JavaScript browser's `Date` object is being used under the hood. **Special JS Feature/Syntax** The use of ISO 8601 date strings (`2024-4-4`) and month indices (`2024, 3, 4`) might be considered special syntax or features in certain contexts. However, these are standardized formats that can be easily parsed by most JavaScript implementations. **Other Alternatives** If you wanted to create a similar benchmark, you could consider adding more test cases, such as: * Using `Date.now()` instead of `new Date(value)` * Handling edge cases like invalid dates or timezone differences * Comparing the performance of different date libraries or frameworks (e.g., Moment.js) Keep in mind that the specific test cases and metrics used in this benchmark might not be representative of all use cases, but they can provide a good starting point for exploring JavaScript date-related performance.
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