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jsreplace
(version: 0)
test javascript replace and regex benchmark
Comparing performance of:
replace vs regex
Created:
2 years ago
by:
Guest
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Tests:
replace
"-$1,3020.00-".replace("-", "").replace("(", "").replace(")", "")
regex
"-$1,3020.00-".replace(/[()-]/g,"")
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
replace
regex
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
2 years ago
)
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:125.0) Gecko/20100101 Firefox/125.0
Browser/OS:
Firefox 125 on Windows
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<iframe src="https://measurethat.net/Embed?id=521517" width="100%" height="500px"></iframe>
Test name
Executions per second
replace
10011601.0 Ops/sec
regex
9591320.0 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to help explain the benchmark being tested on MeasureThat.net. **What is being tested?** The provided benchmark tests two different approaches for replacing special characters in a string: using a simple replacement approach and using regular expressions (regex). **Options compared** The two options being compared are: 1. **Simple Replacement**: This approach uses the `replace()` method with literal strings to replace special characters. For example, in the first test case, the benchmark definition is `"-$1,3020.00-".replace("-","").replace("(","").replace(")","")`. This method replaces each occurrence of a specific character (in this case, a dash `-`, an opening parenthesis `(`, and a closing parenthesis `)`). 2. **Regular Expressions (Regex)**: The second test case uses regex to replace special characters. For example, the benchmark definition is `"-$1,3020.00-".replace(/[()-]/g,"")`. This method uses regular expression syntax to match and replace specific patterns of characters. **Pros and Cons** * **Simple Replacement**: Pros: + Easy to understand and implement + Fast execution speed (since it only requires a single replacement operation) Cons: + Limited flexibility, as the replacement pattern is fixed and cannot be easily modified. + May not work correctly for more complex or nuanced replacements. * **Regular Expressions (Regex)**: Pros: + Flexible and powerful pattern-matching capabilities + Can handle complex and nuanced replacements with ease Cons: + More complex to understand and implement, especially for beginners + Generally slower execution speed compared to simple replacement **Library/Functionality** There is no explicit library or functionality being tested in this benchmark. However, the use of regex suggests that JavaScript's built-in `String.prototype.replace()` method with a regex pattern is being used. **Special JS features/syntax** None are explicitly mentioned in the provided information. If any special JavaScript features or syntax were being used (e.g., ES6 syntax), they would likely be indicated in the benchmark definition or test case. **Other alternatives** If simple replacement and regex are not sufficient, other approaches for replacing special characters might include: * Using a library like `lodash` or `underscore`, which provide utility functions for string manipulation, including replacements. * Implementing custom replacement logic using JavaScript's built-in regular expression engine (e.g., `RegExp.prototype.exec()`). * Using alternative string manipulation methods, such as template literals or DOM-based string manipulation. Keep in mind that the specific alternatives would depend on the requirements and constraints of the project or application.
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