array distinct , JavaScript

array_distinct.js

//http://lijing00333.wordpress.com/2011/02/08/%E6%95%B0%E7%BB%84%E5%8E%BB%E9%87%8D%E2%80%94%E2%80%94%E4%B8%80%E9%81%93%E5%89%8D%E7%AB%AF%E6%A0%A1%E6%8B%9B%E8%AF%95%E9%A2%98/
// [1,2,2,2,3,4,5].toString().match(/(\d)(?!.*,\1)/g);

Array.prototype.distinct = function() {
    var o = {}, i = 0, l = this.length;
    for (; i < l;) {
        if (!o.hasOwnProperty(this[i])) {
            o[this[i++]] = 1;
        } else {
            this.splice(i, 1);
            l--;
        }
    }
    return this;
}

var a = [1, 2, 3, 4, 5, 2, 3, 4, 6, 7, 8];
console.log(a.distinct());

var a = [10, 0, 0, 1, 2, 3, 4, 5, 2, 3, 4, 6, 7, 8, 10];
console.log(a.distinct());