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new-date-vs-date-settime-fixed2
(version: 0)
Comparing performance of:
new Date() vs setTime() vs BASE
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var date = new Date(); var now = Date.now(); var nums = []; for (var i = 0; i < 1000; i++) { nums[i] = now + i; }
Tests:
new Date()
var len = nums.length; var d; for (var i = 0; i < len; i++) { d = new Date(nums[i]); }
setTime()
var len = nums.length; var d = new Date(); for (var i = 0; i < len; i++) { d.setTime(nums[i]); }
BASE
var len = nums.length; var d; for (var i = 0; i < len; i++) { d = nums[i]; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
new Date()
setTime()
BASE
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/118.0.0.0 Safari/537.36
Browser/OS:
Chrome 118 on Windows
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<iframe src="https://measurethat.net/Embed?id=515240" width="100%" height="500px"></iframe>
BASE
15K/s
setTime()
11K/s
new Date()
4K/s
View exact numbers
Test name
Executions per second
✓
BASE
15,154 Ops/sec
setTime()
11,359 Ops/sec
new Date()
4,301 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net. **Benchmark Overview** The benchmark you provided tests three approaches to creating and manipulating `Date` objects in JavaScript: 1. `new Date()` 2. `setTime()` with fixed values 3. A baseline "BASE" approach that simply assigns a value to the `Date` object without any additional manipulation **Options Compared** The two main options being compared are: * `new Date()`: creates a new `Date` object using the current date and time * `setTime()` with fixed values: sets the timestamp of the `Date` object to a specific value using the `setTime()` method **Pros and Cons** 1. **new Date()**: * Pros: simple, straightforward approach that creates a new `Date` object * Cons: may not be as efficient as other approaches since it relies on creating a new date object 2. **setTime()` with fixed values**: * Pros: can potentially be faster than the `new Date()` approach since it sets the timestamp directly, avoiding the overhead of creating a new date object * Cons: requires fixing specific values (in this case, the numbers generated in the script preparation code) which may not always be suitable or meaningful **BASE Approach** The "BASE" approach is a baseline test that simply assigns a value to the `Date` object without any additional manipulation. This approach serves as a control group to establish a baseline for comparison with the other two approaches. Pros: * Simple and straightforward * Establishes a baseline for comparison Cons: * May not be representative of real-world use cases where dates are often manipulated or created dynamically **Library: Date** The `Date` object is a built-in JavaScript object that represents a date and time. It has various methods, including `setTime()`, which allows setting the timestamp of the `Date` object. In this benchmark, both `new Date()` and `setTime()` are used to create or manipulate `Date` objects, but with different approaches. **Special JS Feature/ Syntax** None mentioned in this specific benchmark. However, it's worth noting that JavaScript has various features and syntax related to dates, such as `Date.now()`, `Date.parse()`, and `Intl.DateTimeFormat`. These features are not directly relevant to the current benchmark. **Alternatives** Other alternatives for creating or manipulating `Date` objects in JavaScript include: * Using the `Date` constructor with a fixed timestamp (e.g., `new Date(1234567890000)`) * Using libraries like Moment.js, Luxon, or DayPilot, which provide more advanced date and time manipulation capabilities * Utilizing built-in methods like `toISOString()` or `toLocaleString()` to format dates in different ways These alternatives may offer better performance, feature sets, or usability compared to the options being tested in this benchmark.
Related benchmarks
new Date().getTime() vs Date.now()
Date.now() - Date.now() vs new Date() - new Date()
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