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custom vs regex
(version: 2)
Comparing performance of:
custom vs regex vs simple vs regex 2 vs custom 2
Created:
6 years ago
by:
Registered User
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Tests:
custom
const lookup = { "0": 0, "1": 0, "2": 0, "3": 0, "4": 0, "5": 0, "6": 0, "7": 0, "8": 0, "9": 0, A: 0, B: 0, C: 0, D: 0, E: 0, F: 0, G: 0, H: 0, I: 0, J: 0, K: 0, L: 0, M: 0, N: 0, O: 0, P: 0, Q: 0, R: 0, S: 0, T: 0, U: 0, V: 0, W: 0, X: 0, Y: 0, Z: 0, a: 0, b: 0, c: 0, d: 0, e: 0, f: 0, g: 0, h: 0, i: 0, j: 0, k: 0, l: 0, m: 0, n: 0, o: 0, p: 0, q: 0, r: 0, s: 0, t: 0, u: 0, v: 0, w: 0, x: 0, y: 0, z: 0 }; const str = "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum."; let count = 0; for (var i = 0; i < str.length; ++i) { count += lookup[str[i]] === 0 ? 0 : 1; }
regex
const str = "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum."; var matches = str.match(/[\w\d\’\'-]+/gi); matches ? matches.length : 0;
simple
const str = "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum."; str.split(" ").length
regex 2
const str = "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum."; var regEx = /([^\u0000-\u007F]|\w)+/g; str.match(regEx).length;
custom 2
const lookup = { " ": 1 }; const str = "Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum."; let count = 0; for (var i = 0; i < str.length; ++i) { count += lookup[str[i]]; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (5)
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Test case name
Result
custom
regex
simple
regex 2
custom 2
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
It appears that you are asking for analysis or interpretation of the provided benchmark results, but there is no specific question being asked. However, I can provide some general insights and observations based on the benchmark results: **Browser:** The benchmark results show that Chrome 80 is consistently executing at high speeds across all four tests. **DevicePlatform:** All results are from desktop devices, which suggests that the tests may be optimized for desktop environments. **OperatingSystem:** Linux is the only operating system represented in the results, which may indicate that the tests are optimized for Linux or that Linux is the dominant platform for this particular use case. **Test Execution Rates:** * Test "simple" consistently executes at around 4.65 million executions per second. * Tests "regex", "regex 2", and "custom" have lower execution rates, ranging from 15 million to 60 million executions per second. Overall, the benchmark results suggest that Chrome 80 is performing well on Linux desktop devices, with varying degrees of performance across different tests.
Related benchmarks:
RegEx.exec vs regex.test
Reuse Regex? RegEx.test vs. String.match vs. String.search
Reuse Global Regex? RegEx.test vs. String.match vs. String.search
RegExp.exec vs String.match vs RegExp.test vs RegExp.match
RegEx.test vs. String.includes vs. String.match(Regex)
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