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Math.floor Vs parseInt Vs parseInt
(version: 0)
Benchmark.js
Comparing performance of:
parseInt-10 vs Math.floor vs parseInt
Created:
4 years ago
by:
Guest
Go to the latest result
Tests:
parseInt-10
console.log('myclientid_' + parseInt('' + Math.random() * 100, 10))
Math.floor
console.log('myclientid_' + Math.floor(Math.random() * 100))
parseInt
console.log('myclientid_' + parseInt('' + Math.random() * 100))
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
parseInt-10
Math.floor
parseInt
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) QtWebEngine/6.6.2 Chrome/112.0.5615.213 Safari/537.36
Browser/OS:
Chrome 112 on Linux
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=511002" width="100%" height="500px"></iframe>
Math.floor
177K/s
parseInt-10
159K/s
parseInt
152K/s
View exact numbers
Test name
Executions per second
✓
Math.floor
176,961 Ops/sec
parseInt-10
159,149 Ops/sec
parseInt
151,839 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark definition and test cases. **Benchmark Definition** The provided JSON represents a JavaScript microbenchmarking framework called MeasureThat.net. It defines a benchmark with three test cases: 1. `parseInt-10`: This test case creates a random number between 0 and 100, converts it to an integer using `parseInt`, and logs the result to the console. 2. `Math.floor`: This test case generates a random number between 0 and 100, uses the `Math.floor` function to convert it to an integer, and logs the result to the console. 3. `parseInt`: This test case is similar to `parseInt-10`, but without the conversion from string to number. **Options Compared** The benchmark compares three options: 1. `parseInt`: Uses the `parseInt` function to convert a string to an integer. The second argument (10) specifies the radix (base) of the conversion. 2. `Math.floor`: Uses the built-in `Math.floor` function to round down a number to the nearest integer. **Pros and Cons** Here are some pros and cons for each option: 1. `parseInt`: * Pros: Can be more efficient when converting strings with a specific radix, such as hexadecimal or binary. * Cons: May lead to unexpected results if not used correctly (e.g., omitting the radix argument). 2. `Math.floor`: * Pros: Built-in function, easy to use, and reliable. * Cons: May be slower than using `parseInt` with a specific radix. **Library Usage** None of the test cases use any external libraries. **Special JS Feature or Syntax** The benchmark uses the following special JavaScript features: 1. `console.log`: Used to log the results to the console. 2. String concatenation (`'' + ...`): Used to concatenate strings in the test cases. **Other Alternatives** In a real-world scenario, you might consider alternative approaches, such as: * Using a library like `numjs` or `decimal.js` for more precise arithmetic operations. * Implementing custom integer conversion functions using bitwise operations or other techniques. * Using a just-in-time (JIT) compiler to optimize the benchmarked code. However, for simple use cases like this benchmark, the built-in `Math.floor` and `parseInt` functions are likely sufficient.
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Math.floor Vs parseInt (random and fixed)
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