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Intl.NumberFormat vs toLocalString 2
(version: 0)
Comparing performance of:
Intl.NumberFormat vs toLocalString
Created:
6 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var formater = new Intl.NumberFormat("en-US");
Tests:
Intl.NumberFormat
var a = formater.format("10000");
toLocalString
var a = "10000".toLocaleString("en-US");
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Intl.NumberFormat
toLocalString
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36
Browser/OS:
Chrome 132 on Windows
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=586462" width="100%" height="500px"></iframe>
toLocalString
26.1M/s
Intl.NumberFormat
2.3M/s
View exact numbers
Test name
Executions per second
✓
toLocalString
26,088,404 Ops/sec
Intl.NumberFormat
2,327,954 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to explain the benchmark and its options. **What is tested:** The provided benchmark compares two JavaScript methods for formatting numbers: 1. `Intl.NumberFormat`: This method uses the Internationalization API (Intl) to format numbers according to the locale and style specified in the constructor. 2. `toLocalString`: This method is part of the DOM API (specifically, the `Number` object) and formats a number as a string in the locale's default format. **Options compared:** The benchmark compares two options: A) Using `Intl.NumberFormat` with a specific locale (`en-US`) and style (`decimal`). B) Using the `toLocalString` method without specifying any locale or style. **Pros and Cons of each approach:** **Option A (Intl.NumberFormat):** Pros: * Provides more control over formatting options, such as locale, style, and padding. * Can handle complex number formats with multiple decimal places and grouping. * Supports internationalization, making it suitable for global applications. Cons: * May be slower due to the additional overhead of creating an Intl instance. * Requires explicit handling of errors, such as invalid input or formatting failures. **Option B (toLocalString):** Pros: * Faster execution since no Intl instance needs to be created. * Easier error handling, as it throws exceptions instead of returning errors. Cons: * Less control over formatting options, as it defaults to the locale's default format. * May not handle complex number formats or internationalization correctly. **Other considerations:** Both methods have their strengths and weaknesses. When dealing with simple numbers, `toLocalString` might be a better choice due to its speed advantage. However, when handling more complex formatting requirements or requiring internationalization, `Intl.NumberFormat` is likely the better option. **Library/Libraries mentioned:** The benchmark uses two libraries: 1. Intl (Internationalization API): Provides support for formatting numbers and other data according to locale and style. 2. None (but it's implied that DOM API methods are used). No special JavaScript features or syntax are mentioned in this benchmark. **Other alternatives:** If not using `Intl.NumberFormat`, alternative methods might include: * Using the `NumberFormat` method from a third-party library, such as Moment.js or numbro. * Implementing custom formatting logic using string concatenation or regular expressions. * Leveraging browser-specific APIs, like the `Intl.NumberFormat` API in Safari. Keep in mind that these alternatives may have different performance characteristics and limitations compared to the original benchmark.
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