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Javascript remove duplicates from Array

/ Published in: JavaScript
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Use this to step through an Array and keep only values the first instance of any values, removing all subsequent duplicates.

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  1. Array.prototype.myUnique = function(){
  2. 	var r = new Array();
  3. 	o:for(var i = 0; i < this.length; i++) {
  4. 		for(var x = 0; x < r.length; x++) {
  5. 			if(r[x]==this[i]) {
  6. 				continue o;	
  7. 			}
  8. 		}
  9. 		r[r.length] = this[i];
  10. 	}
  11. 	return r;
  12. };
  13.  
  14. //usage
  15.  
  16. yourArray = yourArray.myUnique();

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