Mehmet Ince Mehmet Ince - 1 month ago 20
Javascript Question

Delete duplicate elements from an array

For example, I have an array like this;

var arr = [1, 2, 2, 3, 4, 5, 5, 5, 6, 7, 7, 8, 9, 10, 10]


My purpose is to discard repeating elements from array and get final array like this;

var arr = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]


How can this be achieved in JavaScript?

NOTE: array is not sorted, values can be arbitrary order.

Answer

It's easier using Array.filter:

var unique = arr.filter(function(elem, index, self) {
    return index == self.indexOf(elem);
})
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