【发布时间】：2016-03-28 20:01:16
【问题描述】：
我正在尝试填充下拉列表，但无法显示选项，我无法弄清楚原因。我用这个填充控制器中的选项：
var qOptions = [];
if (value.vchChoice1 != '') {
qOptions.push(value.vchChoice1);
};
if (value.vchChoice2 != '') {
qOptions.push(value.vchChoice2);
};
if (value.vchChoice3 != '') {
qOptions.push(value.vchChoice3);
};
if (value.vchChoice4 != '') {
qOptions.push(value.vchChoice4);
};
$scope.followingquestions[key].qOptions = qOptions;
qOptions = [];
然后在我的 HTML 中是这样的：
<select ng-model="f.vchShortAnswer">
<option value="">--Please Select--</option>
<option ng-repeat="z in f.qOptions" value="{{z}}">{{z}}</option>
</select>
这是整个 HTML 代码，以防万一有什么东西导致选项出现然后消失：
<div ng-repeat="f in followingquestions">
<div ng-switch="f.ClusterTypeID">
<div ng-switch-when="1048576">
<div class="row row-relative">
<div class="col-md-12">
<div ng-bind-html="f.vchQuestionText | trustedhtml"></div><br />
<div>
<table>
<thead style="background-color:#b1d6f1">
<tr>
<th>{{headers.vchTextElementOneHeader}}</th>
<th>{{headers.vchTextElementTwoHeader}}</th>
</tr>
</thead>
<tbody>
<tr ng-repeat="answ in headers.Answers">
<td>{{answ.vchTextElementOne}}</td>
<td>{{answ.vchTextElementTwo}}</td>
</tr>
</tbody>
</table>
</div>
</div>
</div><br />
</div>
<div ng-switch-when="1">
<div class="row row-relative">
<div class="col-md-9">
<span ng-bind-html="f.vchQuestionText | trustedhtml"></span> <span ng-if="f.vchToolTip != null" style="cursor:pointer"><i class="glyphicon glyphicon-info-sign" tooltip="{{f.vchToolTip}}"></i></span>
</div>
<div class="col-md-3 col-border" ng-switch="f.vchAnswerTableName">
<div class="col-border-padding">
<div ng-switch="f.AnswerTypeID">
<div ng-switch-when="1">
<input type="radio" ng-model="f.vchShortAnswer" value="Yes" style="width:20px" /> Yes <input type="radio" data-ng-model="f.vchShortAnswer" value="No" style="width:20px" /> No
</div>
<div ng-switch-when="5">
@*<select data-ng-model="f.vchShortAnswer" ng-options="qO as qO for qO in f.qOptions" class="form-control">*@
<select ng-options="z as z for z in f.qOptions" ng-model="f.vchShortAnswer" class="form-control">
<option value="">--Please Select--</option>
</select>
</div>
<div ng-switch-when="8">
<textarea ng-model="f.vchLongAnswer" style="width:100%"></textarea>
</div>
<div ng-switch-when="10">
<input type="text" ng-model="f.dteDateAnswer" />
</div>
<div ng-switch-when="9">
<input type="text" ng-model="f.decNumericAnswer" />
</div>
</div>
</div>
</div>
</div>
<div ng-repeat="child in f.Dependents">
<div class="row row-relative">
<div class="col-md-9">
<span ng-bind-html="child.vchQuestionText | trustedhtml"></span> <span ng-if="child.vchToolTip != null style=" cursor:pointer""><i class="glyphicon glyphicon-info-sign" tooltip="{{child.vchToolTip}}"></i></span>
</div>
<div class="col-md-3 col-border" ng-switch="child.vchAnswerTableName">
<div class="col-border-padding">
<div ng-switch="child.AnswerTypeID">
<div ng-switch-when="8">
<div ng-switch="child.bitDependentOnParent">
<div ng-switch-when="true">
<div ng-if="p.vchShortAnswer == child.vchParentAnswerMakesEnabled">
<textarea ng-model="child.vchLongAnswer" style="width:100%"></textarea>
</div>
<div ng-else>
<textarea ng-model="child.vchLongAnswer" style="width:100%" disabled></textarea>
</div>
</div>
<div ng-switch-when="false">
<textarea ng-model="child.vchLongAnswer" style="width:100%"></textarea>
</div>
</div>
</div>
<div ng-switch-when="1">
<input type="radio" data-ng-model="form.child.vchShortAnswer" value="Yes" style="width:20px" /> Yes <input type="radio" data-ng-model="form.child.vchShortAnswer" value="No" style="width:20px" /> No
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
我知道 f.qOptions 中有值，我可以使用只有 div 标签的重复来显示它们，但我无法让它们显示在下拉列表中。
我也尝试了以下方法，但它们仍然没有显示：
ng-options="z as z for z in f.qOptions"
更奇怪的是……值短暂显示，然后消失了！
我认为我在这里遗漏了一些简单的东西，因为我在选择选项列表中显示了其他列表，这与我在上面尝试的方式几乎相同。非常感谢任何帮助！
【问题讨论】：
-
你认为 f 是什么？
-
f 是followinquestions。如果我刷新浏览器，有时会显示这些值。
-
你能创建 plunker 或 sn-p 吗？
标签： javascript angularjs