从Knockout.JS中的数组中删除特定元素

Question

我正在通过网络创建一个多人游戏,所以我必须对网络事件做出反应.

我有这个简单的代码,但removePlayer方法不起作用.addPlayer()工作正常.

<table id="userlist2" class="tablesorter" cellspacing="0">
    <thead>
        <tr>
            <th>Name</th>
            <th>Queue</th>
            <th>Points</th>
        </tr>
    </thead>
    <tbody data-bind="foreach: players">
        <tr>
            <td data-bind="text: name"></td>
            <td data-bind="text: queue"></td>
            <td data-bind="text: score"></td>
        </tr>
    </tbody>
</table>


function PlayerViewModel() {
    var self = this;
    self.players = ko.observableArray();

    self.addPlayer = function (Name, QueuePos, Score) {
        self.players.push({
            name: Name,
            queue: QueuePos,
            score: Score
        });
    }


    self.removePlayer = function (Name) {
        for (var i = 0; i < self.players().length; i++) {

            if (self.players()[i].name == Name) console.log(i);
            self.players().splice(i, 1);
        }
    }
}


players = new PlayerViewModel();
ko.applyBindings(players);

players.addPlayer('Player1', '0', '0');
players.addPlayer('Player2', '0', '0');
players.removePlayer('Player2');

继承人http://jsfiddle.net/xseTc/

Answer 1

你必须使用删除功能:

self.removePlayer = function (Name) {
    self.players.remove(function(player) {
        return player.name == Name;
    });

}

看小提琴

HTML

<table id="userlist2" class="tablesorter" cellspacing="0">
    <thead>
        <tr>
            <th>Name</th>
            <th>Queue</th>
            <th>Points</th>
        </tr>
    </thead>
    <tbody data-bind="foreach: players">
        <tr>
            <td data-bind="text: name"></td>
            <td data-bind="text: queue"></td>
            <td data-bind="text: score"></td>
        </tr>
    </tbody>
</table>

JavaScript的

function PlayerViewModel() {
    var self = this;

    self.players = ko.observableArray();  

    self.addPlayer = function (Name, QueuePos, Score) {
        self.players.push({
            name: Name,
            queue: QueuePos,
            score: Score
        });
    }

    self.removePlayer = function (Name) {
        self.players.remove(function(player) {
            return player.name == Name;
        });
    }
}

players = new PlayerViewModel();
ko.applyBindings(players);

players.addPlayer('Player1', '0', '0');
players.addPlayer('Player2', '0', '0');
players.removePlayer('Player2', '0', '0');

Answer 2

工作删除功能:

self.removePlayer = function (name) {
    self.players.remove(function(player) { 
        return player.name == name
    });
}