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Tick performance
(version: 0)
Is there any difference between "new Date().getTime()" & "(new Date).getTime()"
Comparing performance of:
new Date() vs (new Date)
Created:
8 years ago
by:
Guest
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Tests:
new Date()
new Date().getTime();
(new Date)
(new Date).getTime();
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
new Date()
(new Date)
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. **Benchmark Definition** The benchmark measures the performance difference between two ways of getting the current timestamp: `new Date().getTime()` and `(new Date).getTime()`. These two expressions are essentially doing the same thing, which is to return the number of milliseconds since January 1, 1970, 00:00:00 UTC. The difference lies in how they're written. **Options compared** The benchmark is comparing two options: 1. `new Date().getTime()`: This is the traditional way of getting the current timestamp. It creates a new `Date` object and then calls its `getTime()` method to get the timestamp. 2. `(new Date).getTime()`: This is a more concise version of the previous option. The parentheses are used to create a sub-expression, which allows for implicit grouping. **Pros and Cons** **Traditional approach (`new Date().getTime()`):** Pros: * More explicit and readable code * Can be useful when working with dates in general Cons: * Creates an unnecessary `Date` object **Concise approach ($(new Date).getTime())**: Pros: * More concise and efficient code * Reduces the number of objects created Cons: * May be less readable for some developers, especially those without experience with implicit grouping **Other considerations** In JavaScript, the `new Date()` expression creates a new `Date` object immediately. This is not the same as calling `new Date()`, which would create a new scope and return an object from that scope. The `.` operator is used to access properties of an object, so in this case, it's being used to access the `getTime()` method. **Library usage** There is no explicit library mentioned in this benchmark. **Special JS feature or syntax** The implicit grouping using parentheses (`(new Date).getTime()`) is a JavaScript feature that allows for concise expression evaluation. It's not specific to any particular library or framework, but rather a standard part of the language. **Alternative approaches** If you wanted to test alternative approaches, you might consider: * Using a different method to get the current timestamp, such as `Date.now()` (which is equivalent to `new Date().getTime()`) * Comparing the performance of using `Date` objects versus using numeric values directly * Testing the impact of different browsers or environments on this specific benchmark However, since this benchmark only compares two very similar approaches, it's likely that any alternative approaches would yield similar results.
Related benchmarks:
Date.now() vs new Date().getTime()
new Date().getTime() vs Date.now()
Date.now() vs new Date().getTime(qu)
Date.now() - Date.now() vs new Date() - new Date()
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