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vuknje/deduplicate an array using Array.prototype.filter

Last active August 29, 2015 13:59
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deduplicate an array using Array.prototype.filter
var ar = ['a', 'b', 'c', 'b', 'c', 'a', 'b', 'b'],
data = [];
var ar2 = ar.filter(function(element, position) {
data.push({ 'element': element, 'ar.indexOf(element)': ar.indexOf(element)});
return ar.indexOf(element) === position;
});
console.log('Original array:', ar);
console.log('Array without duplicates:', ar2);
console.table(data);
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