问包含HTML复选框列表的可滚动框

EN

.container { border:2px solid #ccc; width:300px; height: 100px; overflow-y: scroll; }

<div class="container">
    <input type="checkbox" /> This is checkbox <br />
    <input type="checkbox" /> This is checkbox <br />
    <input type="checkbox" /> This is checkbox <br />
    <input type="checkbox" /> This is checkbox <br />
    <input type="checkbox" /> This is checkbox <br />
    <input type="checkbox" /> This is checkbox <br />
    <input type="checkbox" /> This is checkbox <br />
    <input type="checkbox" /> This is checkbox <br />
    <input type="checkbox" /> This is checkbox <br />
    <input type="checkbox" /> This is checkbox <br />
</div>

<style type="text/css">
   select, ul { height: 100px; overflow: auto; width: 100px; border: 1px solid #000; }
   ul { list-style-type: none; margin: 0; padding: 0; overflow-x: hidden; }
   li { margin: 0; padding: 0; }
   label { display: block; color: WindowText; background-color: Window; margin: 0; padding: 0; width: 100%; }
   label:hover { background-color: Highlight; color: HighlightText; }
  </style>
<ul>
   <li><label for="chk1"><input type="checkbox" name="chk1" id="chk1">First</label></li>
   <li><label for="chk2"><input type="checkbox" name="chk2" id="chk2">Second</label></li>
   <li><label for="chk3"><input type="checkbox" name="chk3" id="chk3">Third</label></li>
   <li><label for="chk4"><input type="checkbox" name="chk4" id="chk4">Fourth</label></li>
   <li><label for="chk5"><input type="checkbox" name="chk5" id="chk5">Fifth</label></li>
   <li><label for="chk6"><input type="checkbox" name="chk6" id="chk6">Sixth</label></li>
   <li><label for="chk7"><input type="checkbox" name="chk7" id="chk7">Seventh</label></li>
  </ul>

function obtenerSeleccionados() {
  var seleccionados = [];
  $('.contenedor input:checked').each(function() {
    seleccionados.push($(this).attr('id'));
  });
  alert(seleccionados);
}

.contenedor {
  border: 1px solid grey;
  width: 200px;
  height: 200px;
  overflow-y: scroll;
  position: fixed;
  background: white;
  margin-top: 2px;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<div>

  Hito:

  <input id='btnAbrirFiltro' type="button" value="Filtro múltiple" onclick="$('.contenedor').toggle();$('#btnFiltrar').toggle();$('#btnAbrirFiltro').toggle();$('#btnCerrarFiltro').toggle();">

  <input id='btnCerrarFiltro' type="button" value="Cerrar" style="display: none;" onclick="$('.contenedor').toggle();$('#btnFiltrar').toggle();$('#btnAbrirFiltro').toggle();$('#btnCerrarFiltro').toggle();">

  <input id='btnFiltrar' type="button" value="Filtrar" style="display: none;" onclick="obtenerSeleccionados()">

  <div class="contenedor" style="display: none;">
    <input id="cfh_1" type="checkbox" /> Hito 1
    <br />
    <input id="cfh_2" type="checkbox" /> Hito 2
    <br />
    <input id="cfh_3" type="checkbox" /> Hito 3
    <br />
    <input id="cfh_4" type="checkbox" /> Hito 4
    <br />
    <input id="cfh_5" type="checkbox" /> Hito 5
    <br />
    <input id="cfh_7" type="checkbox" /> Hito 6
    <br />
    <input id="cfh_8" type="checkbox" /> Hito 7
    <br />
    <input id="cfh_4567" type="checkbox" /> Hito 8
    <br />
    <input id="cfh_345" type="checkbox" /> Hito Implementación final del evento
    <br />
    <input id="cfh_45671" type="checkbox" /> Hito a8
    <br />
    <input id="cfh_45672" type="checkbox" /> Hito s8
    <br />
    <input id="cfh_45673" type="checkbox" /> Hito d8
    <br />
    <input id="cfh_45674" type="checkbox" /> Hito f8
    <br />
    <input id="cfh_45675" type="checkbox" /> Hito g8
    <br />
  </div>

</div>

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