SOURCE

var card_num=54;
function wash_card(card_num) {
    var card=[],
    tmp=[],
    index;
    for(var i=0;i<card_num;i++){
        tmp[i]=i+1;
    }
    for(var i=0;i<card_num;i++){
        index=Math.floor(Math.random()*(card_num-i));
        card[i]=tmp[index];
        tmp.splice(index,1);
    }
    return card;
}
console.log(wash_card(card_num));