Javascript 将行添加到 Javascript 生成的表中

Question

有人可以告诉我在哪里添加一小段代码，以便在包含数字的表格顶部添加一行。我只需要添加一行，但是通过下面的代码提供，15 个单元格被放置在彼此的顶部，我认为代码为每个名称放置一个单元格。

$("#myTable tbody").prepend("<tr><td>...contents...</td></tr>");

上面的代码是它应该适合的地方的代码。

我尝试将其添加到下面的这部分之前

$('#players table tr').each(function()

这是应该放置在某处的代码

<script type="text/javascript">

    (function() {

     var players = {
        Joop   : ["6","8","16","18","26","28","32","36","38","41"],
        Marijke: ["7","10","14","18","24","29","30","34","39","40"],
        Michel : ["4","5","11","16","21","27","33","36","42","44"],
        Mario  : ["6","9","18","25","32","35","39","40","43","45"],
        Diana  : ["2","6","8","17","22","23","33","36","42","45"],
        Agnes  : ["3","5","10","15","26","29","32","37","41","44"],
        Chris  : ["5","7","8","9","11","12","16","28","30","32"],
        Jeannette: ["1","2","4","7","8","11","13","28","30","38"],
        Wieger: ["1","2","3","7","10","13","14","22","23","27"],
        Anita: ["6","13","15","17","21","26","32","33","43","45"],
        Thea: ["1","3","5","7","10","17","19","20","22","38"],
        Danny: ["3","7","11","15","22","28","32","37","40","43"],
        Cindy: ["2","4","16","18","21","24","33","38","41","44"],
        Hanneke: ["1","3","4","12","18","21","25","30","36","40"],
        Willem: ["3","9","17","21","27","33","35","39","41","42"]
    },

    draws = [
        {
        when: 'Datum: Zaterdag 08-08-2009',
              picks:[2, 13, 15, 18, 21, 41]
        },

        {
        when: 'Datum: Zaterdag 15-08-2009',
          picks:[6, 19, 24, 25, 35, 37]
        },

        {
        when: 'Datum: Zaterdag 22-08-2009',
          picks:[8, 17, 23, 26, 37, 42]
        },

    {
        when: 'Datum: Zaterdag 29-08-2009',
          picks:[1, 11, 31, 39, 42, 43]
        }
    ];



    var buildPlayers = function(){
        var cont = $("#players"), table = $('<table></table>');
        for( player in players ){
        if ( players.hasOwnProperty( player ) ) {
            var tr = $('<tr><th>' + player + '</th></tr>').appendTo(table),
                len = players[player].length;

            for ( var i = 0; i < len; i++) {
                var td = $('<td/>') 
         td.addClass("loss")
        .addClass("pick_" + players[player][i]) // add the class to the td  
        .text( players[player][i] )
        .appendTo ( tr );

        }


        var winning = $('<td>').addClass('winning-col').appendTo(tr);

            cont.append( table );
        }
        }
    };


    var buildDraws = function(){
        var cont = $("#draws");
        for(var i = 0; i < draws.length; i++){
        var html = ["<div class='draw'>","<h4 class='drawNum'>Trekking "+(i+1) +"</h3></p>","<div class='date'>"+draws[i].when+"</div>","<ol class='picks'>"];

        for(var j = 0; j < draws[i].picks.length; j++) {
            var img = '<img src="http://www.lotto.nl/static/images/ballen/lotto/l'
         + draws[i].picks[j]
         + '.jpg" alt="'
         + draws[i].picks[j]
         + '" />';
            html.push("<li>"+img+"</li>");
            showWin(draws[i].picks[j]);
        }



        html.push("</ol>","</div>");
        cont.append(html.join(""));
        }
    };

    var showWin = function(winNum){
        $(".pick_"+winNum).removeClass("loss").addClass("win");
    };


    $(function(){
        buildPlayers();
        buildDraws();
        function countWinning() {
        $('#players table tr').each(function() {
            var winning = $('td.win', this), total = 0;
            winning.each(function(i,num) {
            total+= parseInt( $(this).text(), 10);
            });

          $(".winning-col", this)
      .text($("td.win", this).length)
      .addClass("hilighted");

        });
        }
        countWinning();
    });


    })();

    </script>

Answer 1

这些都会在表格的开头添加一行:

使用insertBefore :

$('<tr><td>Stuff</td></tr>').insertBefore('#players > tbody > tr:first');

使用before :

$('#players > tbody > tr:first').before('<tr><td>Stuff</td></tr>');

使用prependTo :

$("<tr><td>some data</td></tr>").prependTo("#players > tbody");

使用prepend :

$("#players tbody").prepend("<tr><td>...contents...</td></tr>");

如果表格是动态生成的，您可能需要尝试从选择器中省略 tbody 标记，例如:

$('<tr><td>Stuff</td></tr>').insertBefore('#players > tr:first');