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Split vs Regex with prefix
(version: 0)
Comparing performance of:
Splitting vs Regex
Created:
2 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var testString = "some_prefix_value"
Tests:
Splitting
var values = testString.split("some_prefix_"); var value1 = values[0]; var value2 = values[1]; var value3 = values[2];
Regex
var regex = /\d+/g var value1 = regex[0]; var value2 = regex[1]; var value3 = regex[2];
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Splitting
Regex
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/117.0.0.0 Mobile Safari/537.36
Browser/OS:
Chrome Mobile 117 on Android
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=512210" width="100%" height="500px"></iframe>
Regex
31.5M/s
Splitting
5.5M/s
View exact numbers
Test name
Executions per second
✓
Regex
31,525,300 Ops/sec
Splitting
5,531,292 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to help you understand the provided benchmark. **Benchmark Overview** The benchmark is designed to compare two approaches for extracting values from a string: using the `split()` method and regular expressions (regex). The test cases are identical, with the only difference being which approach is used to extract the values. **Options Compared** The two options compared in this benchmark are: 1. **Split() Method**: This method splits a string into an array of substrings based on a specified separator. 2. **Regular Expressions (Regex)**: This is a way of matching patterns in strings using a regular expression engine. **Pros and Cons** Here's a brief summary of the pros and cons of each approach: * **Split() Method**: + Pros: - Simple and easy to use - Fast, since it uses a simple string splitting algorithm + Cons: - Can be slow for large strings or complex separators - May not work correctly with special characters or edge cases * **Regular Expressions (Regex)**: + Pros: - Powerful and flexible pattern matching capabilities - Fast, since it uses a optimized regex engine + Cons: - Steeper learning curve due to the complexity of regex syntax - May be slower than split() for simple string splitting tasks **Library Used** There is no explicit library mentioned in the benchmark definition or test cases. However, it's likely that the `split()` method and regex engine are part of the JavaScript language itself. **Special JS Feature/Syntax** There doesn't appear to be any special JavaScript feature or syntax used in this benchmark. **Other Alternatives** If you need alternative approaches for extracting values from a string, some other options might include: * Using `String.prototype.replace()` method with a callback function * Using `Array.prototype.map()` and `String.prototype.split()` * Using a custom implementation of the split() method using a loop and substring concatenation These alternatives may have different performance characteristics or trade-offs in terms of complexity and ease of use. I hope this explanation helps!
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