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Posted By

ronydee on 12/12/10


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michellebracken


Remove Duplicate Values from Array 2

 / Published in: JavaScript
 

This snippet is based on this snippet: http://snipplr.com/view/45323/remove-duplicate-values-from-array/ The difference is that this function is an extension of the Array object and that it cleans the duplicates from the input Array instead of creating a new array with the unique values.

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  1. Array.prototype.unique = function unique()
  2. {
  3. 	var i = 0;
  4. 	while (i < this.length)
  5. 	{
  6. 		for (k = this.length; k > i; k--)
  7. 		{
  8. 			if (this[k] === this[i])
  9. 			{
  10. 				this.splice(k,1);
  11. 			}
  12. 		}
  13. 		i++;
  14. 	}
  15. 	return this;
  16. }
  17.  
  18. var myarray = ['jeffrey', 'allie', 'patty', 'damon', 'zach', 'jeffrey', 'allie', 'patty', 'damon', 'zach', 'joe','joe','joe','adam'];
  19. alert(myarray.unique().join(', '));

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