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Intl.NumberFormat vs Intl.NumberFormat-memo
(version: 0)
Comparing performance of:
Intl.NumberFormat vs Intl.NumberFormat-memo
Created:
2 years ago
by:
Guest
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Tests:
Intl.NumberFormat
function format () { return new Intl.NumberFormat("en-US").format("10000"); }
Intl.NumberFormat-memo
var formatter = new Intl.NumberFormat("en-US") function format () { return formatter.format("10000"); }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
Intl.NumberFormat
Intl.NumberFormat-memo
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:139.0) Gecko/20100101 Firefox/139.0
Browser/OS:
Firefox 139 on Mac OS X 10.15
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<iframe src="https://measurethat.net/Embed?id=610472" width="100%" height="500px"></iframe>
Intl.NumberFormat
1613.3M/s
Intl.NumberFormat-memo
1.7M/s
View exact numbers
Test name
Executions per second
✓
Intl.NumberFormat
1,613,303,424 Ops/sec
Intl.NumberFormat-memo
1,724,725 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON data and explain what is being tested. **Benchmark Definition** The benchmark definition is a simple JavaScript function that formats a number using the `Intl.NumberFormat` API. The function takes no arguments and returns a string representation of the number in the specified locale (English-US). This function is used as a baseline to compare with other implementations. There are two variations: 1. **Intl.NumberFormat**: This implementation uses the `Intl.NumberFormat` constructor to create an instance, which then formats the input number using its internal algorithms. 2. **Intl.NumberFormat-memo**: This implementation uses the same `Intl.NumberFormat` constructor but also caches the result of the first execution for subsequent calls, making it a memoized version. **Comparison** The main difference between these two implementations is the caching mechanism in **Intl.NumberFormat-memo**. This approach can provide a performance boost by avoiding unnecessary reformatting for repeated inputs. Pros of **Intl.NumberFormat**: * More accurate results due to caching * Might be considered more "correct" as it follows the standard library's behavior Cons of **Intl.NumberFormat**: * Slower performance due to caching * May not be suitable for applications requiring high performance and frequent formatting Pros of **Intl.NumberFormat-memo**: * Faster performance due to caching * Suitable for applications requiring high performance and frequent formatting Cons of **Intl.NumberFormat-memo**: * Less accurate results due to caching * Might be considered less "correct" as it deviates from the standard library's behavior Other considerations: * The use of `Intl.NumberFormat` is a good practice as it follows modern standards and is widely supported. * The memoization mechanism in **Intl.NumberFormat-memo** can be useful in certain scenarios, such as formatting large datasets or performing many concurrent formatting operations. **Libraries** There are no external libraries used in this benchmark. The `Intl.NumberFormat` API is a built-in JavaScript feature that provides locale-aware number formatting capabilities. **Special JS features or syntax** None of the provided test cases use any special JavaScript features or syntax beyond standard ECMAScript 2022 features, which means they should be compatible with most modern browsers and environments. **Alternative approaches** Other alternatives to compare these implementations could include: * Using a third-party library like moment.js for number formatting * Implementing custom formatting logic using regular expressions or other techniques * Comparing performance between different JavaScript engines (e.g., V8, SpiderMonkey)
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