Выяснение, сколько раз появляется элемент массива

Я новичок в JavaScript, я изучаю и практикую около 3 месяцев и надеюсь, что смогу получить помощь по этой теме. Я'я играю в покер и что яя пытаюсь определить, есть ли у меня пара, две пары, тройка, четверка или фулл-хаус.

Например, в[1, 2, 3, 4, 4, 4, 3], 1 появляется один раз, 4 появляется три раза и так далее.

Как я могу попросить мой компьютер сказать мне, сколько раз появляется элемент массива?

Решено, здесьс конечным продуктом.

    
    var deck = [];
    var cards = [];
    var convertedcards = [];
    var kinds = [];
    var phase = 1;
    var displaycard = [];
    var options = 0;
    var endgame = false;

    // Fill Deck //
    for(i = 0; i < 52; i++){
        deck[deck.length] = i;          
    }

    // Distribute Cards //
    for(i = 0; i < 7; i++){
        cards[cards.length] = Number(Math.floor(Math.random() * 52));
        if(deck.indexOf(cards[cards.length - 1]) === -1){
            cards.splice(cards.length - 1, cards.length);
            i = i - 1;
        }else{
            deck[cards[cards.length - 1]] = "|";
        }
    }

    // Convert Cards //
    for(i = 0; i < 7; i++){
        convertedcards[i] = (cards[i] % 13) + 1;
    }


    // Cards Kind //
    for(i = 0; i < 7; i++){
        if(cards[i] < 13){
            kinds[kinds.length] = "H";
        }else if(cards[i] < 27 && cards[i] > 12){
            kinds[kinds.length] = "C";
        }else if(cards[i] < 40 && cards[i] > 26){
            kinds[kinds.length] = "D";
        }else{
            kinds[kinds.length] = "S";
        }
    }

    // Card Display //
    for(i = 0; i < 7; i++){
        displaycard[i] = convertedcards[i] + kinds[i];
    }

    // Hand Strenght //
    var handstrenght = function(){
        var usedcards = [];
        var count = 0;
        var pairs = [];
        for(i = 0, a = 1; i < 7; a++){
            if(convertedcards[i] === convertedcards[a] && a < 7 && usedcards[i] != "|"){
                pairs[pairs.length] = convertedcards[i];
                usedcards[a] = "|";
            }else if(a > 6){
                i = i + 1;
                a = i;
            }
        }

        // Flush >.< //
        var flush = false;
        for(i = 0, a = 1; i < 7; i++, a++){
            if(kinds[i] === kinds[a] && kinds[i] != undefined){
                count++;
                if(a >= 6 && count >= 5){
                    flush = true;
                    count = 0;
                }else if(a >= 6 && count < 5){
                    count = 0;
                }
            }
        }
        // Straight >.< //
        var straight = false;
        convertedcards = convertedcards.sort(function(a,b){return a-b});
        if(convertedcards[2] > 10 && convertedcards[3] > 10 && convertedcards[4] > 10){
            convertedcards[0] = 14;
            convertedcards = convertedcards.sort(function(a,b){return a-b});
        }
        alert(convertedcards);
        if(convertedcards[0] + 1 === convertedcards[1] && convertedcards[1] + 1 === convertedcards[2] && convertedcards[2] + 1 === convertedcards[3] && convertedcards[3] + 1 === convertedcards[4]){
            straight = true;
        }else if(convertedcards[1] + 1 === convertedcards[2] && convertedcards[2] + 1 === convertedcards[3] && convertedcards[3] + 1 === convertedcards[4] && convertedcards[4] + 1 === convertedcards[5]){
            straight = true;
        }else if(convertedcards[2] + 1 === convertedcards[3] && convertedcards[3] + 1 === convertedcards[4] && convertedcards[4] + 1 === convertedcards[5] && convertedcards[5] + 1 === convertedcards[6]){
            straight = true;
        }
        // Royal Flush, Straight Flush, Flush, Straight >.< //
        var royalflush = false;
        if(straight === true && flush === true && convertedcards[6] === 14){
            royalflush = true;
            alert("You have a Royal Flush");
        }
        else if(straight === true && flush === true && royalflush === false){
            alert("You have a straight flush");
        }else if(straight === true && flush === false){
            alert("You have a straight");
        }else if(straight === false && flush === true){
            alert("You have a flush");
        }
        // Full House >.< //
        if(pairs[0] === pairs[1] && pairs[1] != pairs[2] && pairs.length >= 3){
            fullhouse = true;
            alert("You have a fullhouse");
        }else if(pairs[0] != pairs[1] && pairs[1] === pairs[2] && pairs.length >= 3){
            fullhouse = true;
            alert("You have a fullhouse");
        }else if(pairs[0] != pairs[1] && pairs[1] != pairs[2] && pairs[2] === pairs[3] && pairs.length >= 3){
            fullhouse = true;
            alert("You have a fullhouse");
        }
        // Four of a kind >.< //
        else if(pairs[0] === pairs[1] && pairs[1] === pairs[2] && pairs.length > 0){
            alert("You have four of a kind");
        }
        // Three of a kind >.< //
        else if(pairs[0] === pairs[1] && flush === false && straight === false && pairs.length === 2){
            alert("You have three of a kind");
        }
        // Double Pair >.< //
        else if(pairs[0] != pairs[1] && flush === false && straight === false && pairs.length > 1){
            alert("You have a double pair");
        }
        // Pair >.< //
        else if(pairs.length === 1 && flush === false && straight === false && pairs.length === 1 ){
            alert("You have a pair");
        }
        alert(pairs);
    };
    while(endgame === false){
        if(phase === 1){
            options = Number(prompt("Your hand: " + displaycard[0] + " " + displaycard[1] + "\n\n" + "1. Check" + "\n" + "2. Fold"));
        }else if(phase === 2){
            options = Number(prompt("Your hand: " + displaycard[0] + " " + displaycard[1] + "\n\n" + displaycard[2] + " " + displaycard[3] + " " + displaycard[4] + "\n\n" + "1. Check" + "\n" + "2. Fold"));
        }else if(phase === 3){
            options = Number(prompt("Your hand: " + displaycard[0] + " " + displaycard[1] + "\n\n" + displaycard[2] + " " + displaycard[3] + " " + displaycard[4] + " " + displaycard[5] + "\n\n" + "1. Check" + "\n" + "2. Fold"));
        }else if(phase === 4){
            options = Number(prompt("Your hand: " + displaycard[0] + " " + displaycard[1] + "\n\n" + displaycard[2] + " " + displaycard[3] + " " + displaycard[4] + " " + displaycard[5] + " " + displaycard[6] + "\n\n" + "1. Check" + "\n" + "2. Fold"));
        }
        switch(options){
            case 1:
                    if(phase === 5){
                        handstrenght();
                        endgame = true;
                    }else{
                        phase++;
                    }
                    break;
            case 2:
                    endgame = true;
                    break;
            default:
                    endgame = true;
                    break;
        }
    }



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