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JavaScript String gsub

/ Published in: JavaScript
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Based on Prototype JS String#gsub

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  1. function gsub(source, pattern, replacement) {
  2. 	var result = '', match, replaced;
  3. 	while (source.length > 0) {
  4. 		if (match = source.match(pattern)) {
  5. 			result += source.slice(0, match.index);
  6. 			replaced = replacement(match);
  7. 			result += replaced == null ? '' : String(replaced);
  8. 			source = source.slice(match.index + match[0].length);
  9. 		} else {
  10. 			result += source, source = '';
  11. 		}
  12. 	}
  13. 	return result;
  14. }

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