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Is Number Check
(version: 0)
Benchmark.js
Comparing performance of:
Test vs Test 2
Created:
4 years ago
by:
Guest
Go to the latest result
Script Preparation code:
function toStrCase(obj){ return typeof obj === 'number'; } function consCase(obj){ return !Number.isNaN(obj) }
Tests:
Test
toStrCase(1)
Test 2
consCase(1)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Test
Test 2
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (iPhone; CPU iPhone OS 17_2_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2 Mobile/15E148 Safari/604.1
Browser/OS:
Mobile Safari 17 on iOS 17.2.1
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=501920" width="100%" height="500px"></iframe>
Test
26.8M/s
Test 2
11.5M/s
View exact numbers
Test name
Executions per second
✓
Test
26,822,208 Ops/sec
Test 2
11,509,604 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll explain the benchmark in detail. **Benchmark Definition** The provided JSON defines a JavaScript microbenchmark called "Is Number Check". This benchmark measures the performance of two functions: `toStrCase` and `consCase`. Both functions are designed to check if a given input is a number. * `toStrCase`: This function returns `true` if the input is a number, and `false` otherwise. The implementation uses a simple string conversion approach. * `consCase`: This function returns `true` if the input is not NaN (Not a Number), and `false` otherwise. The implementation uses the built-in `Number.isNaN()` method. **Comparison of Options** The benchmark compares two approaches to check if a number: 1. **`toStrCase`**: Converts the input string to lowercase and checks if it's empty using `typeof obj === 'number'`. This approach can be slow because it involves additional string operations. 2. **`consCase`**: Uses the built-in `Number.isNaN()` method, which is a more efficient way to check for NaN values. **Pros and Cons** * **`toStrCase`**: * Pros: Easy to understand and implement, no dependencies on special JavaScript features. * Cons: Slow due to additional string operations. * **`consCase`**: * Pros: Faster, uses a built-in method, and doesn't involve additional string operations. * Cons: Requires knowledge of the `Number.isNaN()` function. The benchmark results will likely show that `consCase` is faster than `toStrCase`, as it leverages the optimized implementation of `Number.isNaN()`. **Library Usage** There are no libraries used in this benchmark, but I'll mention a few notable ones: * `Number.isNaN()`: A built-in method for checking if a value is NaN (Not a Number). * No special JavaScript features are used in this benchmark.
Related benchmarks
typeof number vs. Number.isNan vs. isNan
Number.isInteger() vs typeof
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