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366dde3c-df1b-4c33-8095-a83229ef9108
(version: 0)
Comparing performance of:
a.toLowerCase() === b.toLowerCase() vs a.localeCompare(b,undefined,o) vs c.toLowerCase() === b.toLowerCase() vs c.localeCompare(b,undefined,o)
Created:
3 years ago
by:
Guest
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Script Preparation code:
var a = "John Doe" var b = "john doe" var c = "john smith" var o = { sensitivity: 'accent' }
Tests:
a.toLowerCase() === b.toLowerCase()
a.toLowerCase() === b.toLowerCase()
a.localeCompare(b,undefined,o)
a.localeCompare(b,undefined,o)
c.toLowerCase() === b.toLowerCase()
c.toLowerCase() === b.toLowerCase()
c.localeCompare(b,undefined,o)
c.localeCompare(b,undefined,o)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (4)
Previous results
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Test case name
Result
a.toLowerCase() === b.toLowerCase()
a.localeCompare(b,undefined,o)
c.toLowerCase() === b.toLowerCase()
c.localeCompare(b,undefined,o)
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
gemma2:9b
, generated one year ago):
This benchmark compares different approaches to string comparison in JavaScript, focusing on case-sensitivity and locale awareness. Here's a breakdown: **Options Compared:** * **`a.toLowerCase() === b.toLowerCase()`:** This approach converts both strings `a` and `b` to lowercase before comparing them using strict equality (`===`). It ignores case differences but treats other characters (like accents or special symbols) the same regardless of their original case. * **`a.localeCompare(b, undefined, o)`:** This uses the `localeCompare()` method, which compares strings based on the specified locale and options. The `o` object in this case defines a "sensitivity" setting that likely controls how accents are handled (more on this below). **Pros and Cons:** * **`toLowerCase() ===`:** * **Pros:** Simple, fast, widely understood. * **Cons:** Ignores locale-specific nuances; treats all characters equally regardless of their original case or accent markings. * **`localeCompare(b, undefined, o)`:** * **Pros:** More accurate for comparing strings across different languages and cultures by considering locale rules and potential accent variations. * **Cons:** Can be more complex to understand and use; performance might vary depending on the locale and complexity of the comparison. **Library/Feature Explanation:** * `localeCompare()`: This is a built-in JavaScript method for comparing strings based on locale-sensitive rules. It's part of ECMAScript (the standard for JavaScript). * **The `sensitivity` option in `o`:** This object likely controls how accents are treated during the comparison. Common values include "accent" (which considers accents as different) and "base" (which treats accented characters as equivalent to their base counterparts). **Other Alternatives:** While not explicitly tested here, other string comparison methods exist: * **Regular Expressions:** Can be used for complex pattern-based comparisons, but may be less efficient for simple case-insensitive comparisons. * **Third-Party Libraries:** Some libraries specialize in string manipulation and locale-aware comparisons, offering additional features and optimization. **Key Considerations:** The best approach depends on your specific use case: * **Case Sensitivity:** If you need to strictly compare strings regardless of case, `toLowerCase() ===` is sufficient. * **Locale Awareness:** When dealing with internationalization or comparing strings from different cultures, `localeCompare()` provides more accurate results.
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