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Posted By

inamorix on 10/22/07


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js


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String.prototype.matchIndexOf

 / Published in: JavaScript
 
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  1. String.prototype.matchIndexOf = function (regexp) {
  2. 	var ptns = regexp.toString();
  3. 	var opt  = ptns.match(/\/([a-z]*)$/)[1];
  4. 	    ptns = ptns.replace(/^\/(.+)\/([a-z]*)$/, '$1');
  5. 	    ptns = ptns.replace(/\\\|/              , '^^');
  6. 	    ptns = ptns.split('|');
  7.  
  8. 	for (var i = 0, ix = ptns.length; i < ix; i++) {
  9. 		var ptn = new RegExp(ptns[i].replace(/\^\^/, '\\|'), opt);
  10. 		if (this.match(ptn)) {
  11. 			return i;
  12. 		}
  13. 	}
  14.  
  15. 	return -1;
  16. };

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