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Nettuts on 12/06/10

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Last Edited at 12/06/10 03:34am

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Remove Duplicate Values from Array

/ Published in: JavaScript

Simple function that filters out any duplicate items in an array.

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var unique = function(origArr) {
    var newArr = [],
        origLen = origArr.length,
        found,
        x, y;
 
    for ( x = 0; x < origLen; x++ ) {
        found = undefined;
        for ( y = 0; y < newArr.length; y++ ) {
            if ( origArr[x] === newArr[y] ) { 
              found = true;
              break;
            }
        }
        if ( !found) newArr.push( origArr[x] );    
    }
   return newArr;
}
 
var myarray = ['jeffrey', 'allie', 'patty', 'damon', 'zach', 'jeffrey', 'allie', 'patty', 'damon', 'zach', 'joe'];
myarray = unique(myarray);
alert(myarray.join(', '));