我正在使用ng-options來創建選擇選項。 CA.JSON文件包含所有控件值/選項。如何設置默認值,請選擇控制選項?
這裏在爲VehicleYear選項我想添加默認值,請選擇選項。
<select>
<option value="">Please select</option>
<option value="2017">2017<option>
...
<select>
我tryed如下,但它不工作
<select ng-change="updateMakeList" custom-required="true" ng-options="ans._value as ans._promptText for ans in questions[$state.current.name].VehicleYear.QuestionData._answerOptions" ng-model="answers.VehicleYear" ng-required="queObj._required" class="form-control {{queObj._pageAttributes.cssclass}}" name="{{questions[$state.current.name].VehicleYear.QuestionData._attributeName}}" id="{{questions[$state.current.name].VehicleYear.QuestionData._attributeName}}" data-que-obj="questions[$state.current.name].VehicleYear.QuestionData" select-control-dir setMake custom-required>
<option value="">Please select</option>
</select>
https://plnkr.co/edit/aV65Nab9U9I6YlK2g4sY?p=preview
'<選項值=「」選中>請選擇' –
請選擇選項未顯示在列表中。如何添加ng選項。 –
如何更改'answers.VehicleYear'?你的代碼非常難以調試。在app.js中,如果我添加了'$ rootScope.answers = {PC:12345,VehicleYear:null};'它被初始化爲2017 ... – gyc