unique new york

gistfile1.js

function unique(array){
    var unique = [];
    for (var i = 0, l = array.length; i < l; i++){
        if (unique.indexOf(array[i]) === -1)
            unique.push(array[i]);
    }
    return unique;
}

unique strings.js

function unique(array){
    var unique = [];
    for (var i = 0, l = array.length; i < l; i++){
        if (!unique.join(',').match(new RegExp('[,]' + array[i])))
            unique.push(array[i]);
    }
    return unique;
}

we can do it.js

function unique(array){
    var uniqueObject = {};
    for (var i = 0, l = array.length; i < l; i++) {
        uniqueObject[array[i]] = array[i];
    }
    var unique = [];
    for (var key in uniqueObject){
        if (uniqueObject.hasOwnProperty(key)) unique.push(key);
    }
    return unique;
}