javascript - 动态创建 Bootstrap 元素

Question

我正在尝试动态创建 Bootstrap 元素。一切工作正常，但我无法创建下拉菜单。

我正在使用 ColdFusion。我的 div 元素是:

<div class="panel panel-primary"><div class="panel-heading">
  <h4 class="panel-title">
    <a data-toggle="collapse" data-parent="#accordion" href="#collapse9">Vehicles</a>
  </h4>
</div>
<div id="collapse9" class="panel-collapse collapse">
  <div class="panel-body">
    <input type="hidden" name="totalVehicles" id="totalVehicles" value="1" />
    <div id="vehicle_fields"> </div>
    <div class="form-group">
      <label for="name" class="col-lg-2">Make:</label>
      <div class="col-lg-2">
        <input type="text" class="form-control" name="vehicleMake1" id="vehicleMake1" maxlength="50">
      </div>
      <label for="name" class="col-lg-2">Model:</label>
      <div class="col-lg-2">
        <input type="text" class="form-control" name="vehicleModel1" id="vehicleModel1" maxlength="50">
      </div>
      <label for="name" class="col-lg-2">Year:</label>
      <div class="col-lg-2">
        <input type="text" class="form-control" name="vehicleYear1" id="vehicleYear1" maxlength="20">
      </div>
    </div>
    <div class="form-group">
      <label for="name" class="col-lg-2">Color:</label>
      <div class="col-lg-2">
        <input type="text" class="form-control" name="vehicleColor1" id="vehicleColor1" maxlength="30">
      </div>
      <label for="name" class="col-lg-2">License Plate No:</label>
      <div class="col-lg-2">
        <input type="text" class="form-control" name="vehicleLicensePlate1" id="vehicleLicensePlate1" maxlength="20">
      </div>
      <label for="name" class="col-lg-2">License Plate State:</label>
      <div class="col-lg-2">
        <select id="vehicleLicensePlateState1" name="vehicleLicensePlateState1" class="selectpicker form-control">
          <option value="XX" selected>Select</option>
          <cfloop query="GetStates">
            <cfoutput>
              <option value="#GetStates.State#">#GetStates.State#</option>
            </cfoutput>
          </cfloop>
        </select>
      </div>
    </div>
    <div class="form-group">
      <label for="name" class="col-lg-3">
        <small>Press <span class="glyphicon glyphicon-plus gs"></span> to add another vehicle</small>.
      </label>
      <div class="input-group-btn">
        <button class="btn btn-success" type="button" onclick="vehicle_fields();"> <span class="glyphicon glyphicon-plus" aria-hidden="true"></span> </button>
      </div>
    </div>
  </div>
</div>
</div>

按钮vehicle_fields()负责创建一组新的元素并增加它们的ID。

这是我的功能:

function vehicle_fields() {
  vehicles++;
  $("#totalVehicles").val(vehicles);
  var objTo = document.getElementById('vehicle_fields')
  var divtest = document.createElement("div");
  divtest.setAttribute("class", "removeclassVehicle" + vehicles);
  var rdiv = 'removeclass' + vehicles;
  var htmlStr = '<div class="form-group"><label for="name" class="col-lg-2">Make:</label><div class="col-lg-2">';
  htmlStr += '<input type="text" class="form-control" name="vehicleMake' + vehicles + '" id="vehicleMake' + vehicles + '" maxlength="50">';
  htmlStr += '</div><label for="name" class="col-lg-2">Model:</label><div class="col-lg-2">';
  htmlStr += '<input type="text" class="form-control" name="vehicleModel' + vehicles + '" id="vehicleModel' + vehicles + '" maxlength="50">';
  htmlStr += '</div><label for="name" class="col-lg-2">Year:</label><div class="col-lg-2">';
  htmlStr += '<input type="text" class="form-control" name="vehicleYear' + vehicles + '" id="vehicleYear' + vehicles + '" maxlength="20">';
  htmlStr += '</div></div><div class="form-group"><label for="name" class="col-lg-2">Color:</label><div class="col-lg-2">';
  htmlStr += '<input type="text" class="form-control" name="vehicleColor' + vehicles + '" id="vehicleColor' + vehicles + '" maxlength="30">';
  htmlStr += '</div><label for="name" class="col-lg-2">License Plate No:</label><div class="col-lg-2">';
  htmlStr += '<input type="text" class="form-control" name="vehicleLicensePlate' + vehicles + '" id="vehicleLicensePlate' + vehicles + '" maxlength="20">';
  htmlStr += '</div><label for="name" class="col-lg-2">License Plate State:</label><div class="col-lg-2">';
  htmlStr += '<div class="btn-group bootstrap-select form-control">';
  htmlStr += '<select name="desiredLeaseTerm' + vehicles + '" id="vehicleLicensePlateState' + vehicles + '" name="vehicleLicensePlateState' + vehicles + '" class="selectpicker form-control">';
  htmlStr += $("#vehicleLicensePlateState1").html();
  htmlStr += '</select></div></div></div>';
  htmlStr += '<div class="form-group"><label for="name" class="col-lg-3"><small>Press <span class="glyphicon glyphicon-minus gs"></span> to remove the vehicle</small></label><div class="input-group-btn"><button class="btn btn-danger" type="button"  onclick="remove_vehicle_fields(' + preference + ');"> <span class="glyphicon glyphicon-minus" aria-hidden="true"></span> </button></div></div>'
  console.debug(htmlStr);
  divtest.innerHTML = htmlStr;
  objTo.appendChild(divtest)
}

function remove_vehicle_fields(rid) {
  $('.removeclassVehicle' + rid).remove();
}

当我加载页面时，我设置了 vehicle = 1 。

我不确定这是否是实现动态字段创建的最佳方式；然而，它对我有用。唯一的异常(exception)是<select id="vehicleLicensePlateState"> 。当我点击添加另一辆车时，它没有创建/显示。

有谁知道为什么吗？

谢谢

Answer 1

看起来您的 div 标签可能不匹配。

无论哪种方式，它都在 Fiddle 中工作:

https://jsfiddle.net/DTcHh/39882/

<div class="panel-heading">
  <h4 class="panel-title">
    <a data-toggle="collapse" data-parent="#accordion" href="#collapse9">Vehicles</a>
  </h4>
</div>
<div id="collapse9" class="panel-collapse collapse">
  <div class="panel-body">
    <input type="hidden" name="totalVehicles" id="totalVehicles" value="1" />
    <div id="vehicle_fields"> </div>
    <div class="form-group">
      <label for="name" class="col-lg-2">Make:</label>
      <div class="col-lg-2">
        <input type="text" class="form-control" name="vehicleMake1" id="vehicleMake1" maxlength="50">
      </div>
      <label for="name" class="col-lg-2">Model:</label>
      <div class="col-lg-2">
        <input type="text" class="form-control" name="vehicleModel1" id="vehicleModel1" maxlength="50">
      </div>
      <label for="name" class="col-lg-2">Year:</label>
      <div class="col-lg-2">
        <input type="text" class="form-control" name="vehicleYear1" id="vehicleYear1" maxlength="20">
      </div>
    </div>
    <div class="form-group">
      <label for="name" class="col-lg-2">Color:</label>
      <div class="col-lg-2">
        <input type="text" class="form-control" name="vehicleColor1" id="vehicleColor1" maxlength="30">
      </div>
      <label for="name" class="col-lg-2">License Plate No:</label>
      <div class="col-lg-2">
        <input type="text" class="form-control" name="vehicleLicensePlate1" id="vehicleLicensePlate1" maxlength="20">
      </div>
      <label for="name" class="col-lg-2">License Plate State:</label>
      <div class="col-lg-2">
        <select id="vehicleLicensePlateState1" name="vehicleLicensePlateState1" class="selectpicker form-control">
          <option value="XX" selected>Select</option>
          <cfloop query="GetStates">
            <cfoutput>
              <option value="#GetStates.State#">#GetStates.State#</option>
            </cfoutput>
          </cfloop>
        </select>
      </div>
    </div>
    <div class="form-group">
      <label for="name" class="col-lg-3">
        <small>Press <span class="glyphicon glyphicon-plus gs"></span> to add another vehicle</small>.
      </label>
      <div class="input-group-btn">
        <button class="btn btn-success" type="button" onclick="vehicle_fields();"> <span class="glyphicon glyphicon-plus" aria-hidden="true"></span> </button>
      </div>
    </div>
  </div>
</div>