Intl.Collator provides locale-aware string comparison for proper sorting across languages. Here's how to use it.
Basic Usage#
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Locale-Specific Sorting#
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Sensitivity Options#
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Case Ordering#
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Numeric Sorting#
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Ignore Punctuation#
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Sorting Objects#
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Search and Filter#
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Performance Optimization#
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Resolved Options#
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Practical Examples#
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Best Practices#
Configuration:
✓ Choose appropriate sensitivity
✓ Enable numeric for versions/files
✓ Match locale to user preference
✓ Cache collator instances
Common Options:
✓ sensitivity: 'base' for search
✓ numeric: true for natural sort
✓ ignorePunctuation for fuzzy match
✓ caseFirst for specific ordering
Performance:
✓ Reuse collator instances
✓ Extract compare function
✓ Cache for multiple locales
✓ Avoid creating in loops
Avoid:
✗ localeCompare for large sorts
✗ Creating collators repeatedly
✗ Ignoring locale requirements
✗ Assuming ASCII ordering
Conclusion#
Intl.Collator provides locale-aware string comparison essential for proper internationalization. Use sensitivity options to control how strictly strings are compared, numeric option for natural sorting of numbers in strings, and cache collator instances for performance. It handles locale-specific sorting rules automatically, making it far superior to simple string comparison for user-facing content.