Question

角度JS相当新，需要一些帮助。如何使用 ng-if 显示或隐藏不同的输入字段？我目前正在使用 ng-show ，但它并没有完全删除DOM，因此在验证过程中很难。我希望在特定div中显示的输入字段在选中时成为强制 ONLY 。

当我点击选择基金时，我希望showme2 div显示并且字段成为必填项。当我点击选择产品时，我希望显示showme1 div并将字段变为必填字段。请参阅下面的我当前的代码：

<div ng-show="showme1">
         <div class="form-group">
         <h3 class="col-xs-12 col-sm-3">Add Product details</h3>
           <label class="col-xs-12 col-sm-3 control-label" for="Product1</label>
           <div class="col-xs-12 col-sm-6">
              <input type="text" name="productName" class="form-control" id="productName1" required="required" placeholder="Product 1">
           </div>
        </div>

        <<div class="form-group">
         <h3 class="col-xs-12 col-sm-3">Add Product details</h3>
           <label class="col-xs-12 col-sm-3 control-label" for="Product2</label>
           <div class="col-xs-12 col-sm-6">
              <input type="text" name="productName" class="form-control" id="productName2" required="required" placeholder="Product 2">
           </div>
        </div>

        <div class="form-group">
           <label class="col-xs-12 col-sm-3 control-label"></label>
           <div class="col-xs-12 col-sm-6" align="center" ng-click="showme2=true; showme1=false"><a>(or Select Fund)</a><br /></div>
        </div>
</div>


<div ng-show="showme2">
         <div class="form-group">
         <h3 class="col-xs-12 col-sm-3">Add Fund details</h3>
           <label class="col-xs-12 col-sm-3 control-label" for="Product1</label>
           <div class="col-xs-12 col-sm-6">
              <input type="text" name="fundName" class="form-control" id="fundName1" required="required" placeholder="Fund 1">
           </div>
        </div>

        <<div class="form-group">
         <h3 class="col-xs-12 col-sm-3">Add Product details</h3>
           <label class="col-xs-12 col-sm-3 control-label" for="Product2</label>
           <div class="col-xs-12 col-sm-6">
              <input type="text" name="fundName" class="form-control" id="fundName2" required="required" placeholder="Fund 2">
           </div>
        </div>

            <div class="form-group">
           <label class="col-xs-12 col-sm-3 control-label"></label>
           <div class="col-xs-12 col-sm-6" ng-click="showme1=true; showme2=false" align="center"><a>(or Select Product)</a></div>
        </div>
</div>

Answer 1

参考this stackoverflow回答，了解如何使用ng-if。

您可以使用 ng-if 在Angular.js中实现 if（）{..} else {..} 。
<div ng-if="data.id == 5">

</div>
<div ng-if="data.id != 5">

</div>

此外，我已在CodePen中修改了您的代码段以使用ng-if，请参阅此处。 https://codepen.io/silicaRich/pen/PjwwPv

JS

var TestApp = angular.module("TestApp", []);

HTML

  <html>
  <head>
  </head>
  <body ng-app='TestApp'>

    <!-- Will display if showme == true -->
    <div ng-show="showme">
         <div class="form-group">
            <h3 class="col-xs-12 col-sm-3">Add Product details // showme1</h3>
           <label class="col-xs-12 col-sm-3 control-label" for="Product1"></label>
           <div class="col-xs-12 col-sm-6">
              <input type="text" name="productName" class="form-control" id="productName1" required="required" placeholder="Product 1">
           </div>
        </div>

        <div class="form-group">
         <h3 class="col-xs-12 col-sm-3">Add Product details // showme1</h3>
           <label class="col-xs-12 col-sm-3 control-label" for="Product2"></label>
           <div class="col-xs-12 col-sm-6">
              <input type="text" name="productName" class="form-control" id="productName2" required="required" placeholder="Product 2">
           </div>
        </div>

        <div class="form-group">
           <label class="col-xs-12 col-sm-3 control-label"></label>
           <div class="col-xs-12 col-sm-6" align="center" ng-click="showme=false;"><a>(or Select Fund) // showme2</a><br /></div>
        </div>
    </div>

    <!-- Will display if showme == false -->
    <div ng-show="!showme">
         <div class="form-group">
         <h3 class="col-xs-12 col-sm-3">Add Fund details // showme2 </h3>
           <label class="col-xs-12 col-sm-3 control-label" for="Product1"></label>
           <div class="col-xs-12 col-sm-6">
              <input type="text" name="fundName" class="form-control" id="fundName1" required="required" placeholder="Fund 1">
           </div>
        </div>

        <div class="form-group">
         <h3 class="col-xs-12 col-sm-3">Add Fund details // showme2 </h3>
           <label class="col-xs-12 col-sm-3 control-label" for="Product2"></label>
           <div class="col-xs-12 col-sm-6">
              <input type="text" name="fundName" class="form-control" id="fundName2" required="required" placeholder="Fund 2">
           </div>
        </div>

          <div class="form-group">
           <label class="col-xs-12 col-sm-3 control-label"></label>
           <div class="col-xs-12 col-sm-6" ng-click="showme=true;" align="center"><a>(or Select Product) // showme1</a></div>
        </div>
   </div>

  </body>
  </html>

希望这有帮助。

如何使用ng-if显示或隐藏输入字段？

1 个答案: