[Resolvido] Mudar valor de select dentro da tabela especificada

dinohills · October 31, 2012

Boa tarde,

Estou tentando montar um script que ao escolher uma opção na lista primaria(select) ele mude o valor das demais listas(select) que estão dentro da tabela.

Estou tentando definir isso pegando a id da tabela e fazendo com que ele mude o valor das listas que estão dentro da tabela que foi especificada.

O script me retorna o seguinte erro:

tabela.getElementsByName is not a function

O problema é que eu preciso manter os nomes das listas(select) tanto da tabela 1 como da tabela 2 iguais.

Tem como restringir isso pegando o id da tabela e mandando alterar so dentro dela ?

Segue o exemplo:

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
            <title></title>
            &lt;script type="text/javascript">
                function muda_lista(id_tabela,id_lista,nome_lista){
                    var tabela = document.getElementById(id_tabela);
                    var lista_principal  = document.getElementById(id_lista);
                    var listas = tabela.getElementsByName(nome_lista);

                    for(i=0;i<listas.length;i++){
                        listas[i].value = lista_principal.value;
                    }

                }
            </script>
    </head>
    <body>
        <table border="1" id="tabela1">
            <thead>
                <tr>
                    <th>
                        Tabela 1<br/>
                        <select id="lista_principal1" onchange="muda_lista('tabela1','lista_principal1','lista')">
                            <option value="A">A</option>
                            <option value="B">B</option>
                            <option value="C">C</option>
                        </select>
                    </th>
                </tr>
            </thead>
            <tbody>
                <tr>
                    <td>
                        <select name="lista">
                            <option value="A">A</option>
                            <option value="B">B</option>
                            <option value="C">C</option>
                        </select>
                    </td>
                </tr>
                <tr>
                    <td>
                        <select name="lista">
                            <option value="A">A</option>
                            <option value="B">B</option>
                            <option value="C">C</option>
                        </select>
                    </td>
                </tr>
                <tr>
                    <td>
                        <select name="lista">
                            <option value="A">A</option>
                            <option value="B">B</option>
                            <option value="C">C</option>
                        </select>
                    </td>
                </tr>
            </tbody>
        </table>
        <br/>
        <table border="1" id="tabela2">
            <thead>
                <tr>
                    <th>
                        Tabela 1<br/>
                        <select id="lista_principal2" onchange="muda_lista('tabela2','lista_principal2','lista')">
                            <option value="A">A</option>
                            <option value="B">B</option>
                            <option value="C">C</option>
                        </select>
                    </th>
                </tr>
            </thead>
            <tbody>
                <tr>
                    <td>
                        <select name="lista">
                            <option value="A">A</option>
                            <option value="B">B</option>
                            <option value="C">C</option>
                        </select>
                    </td>
                </tr>
                <tr>
                    <td>
                        <select name="lista">
                            <option value="A">A</option>
                            <option value="B">B</option>
                            <option value="C">C</option>
                        </select>
                    </td>
                </tr>
                <tr>
                    <td>
                        <select name="lista">
                            <option value="A">A</option>
                            <option value="B">B</option>
                            <option value="C">C</option>
                        </select>
                    </td>
                </tr>
            </tbody>
        </table>
    </body>
</html>

Edited October 31, 2012 by dinohills

dinohills · October 31, 2012

Solução encontrada com ajuda em outro fórum.

var listas = tabela.getElementsByTagName('select');

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[Resolvido] Mudar valor de select dentro da tabela especificada

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