How do I use ng-if to display or hide input fields?
刚接触Angular JS,需要帮助。如何使用ng来显示或隐藏不同的输入字段?我目前正在使用ng-show,但它不能完全删除DOM,因此在验证过程中很难做到。我希望在特定的DIV中显示的输入字段只有在选中时才成为必需的。
当我单击"选择资金"时,我希望显示ShowMe2 DIV并强制显示字段。当我单击Select Product时,我希望显示ShowMe1 DIV并强制显示字段。请参阅下面我的当前代码:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | <h3 class="col-xs-12 col-sm-3">Add Product details <label class="col-xs-12 col-sm-3 control-label" for="Product1</label> <input type="text" name="productName" class="form-control" id="productName1" required="required" placeholder="Product 1"> < <h3 class="col-xs-12 col-sm-3">Add Product details <label class="col-xs-12 col-sm-3 control-label" for="Product2</label> <input type="text" name="productName" class="form-control" id="productName2" required="required" placeholder="Product 2"> <label class="col-xs-12 col-sm-3 control-label"></label> (or Select Fund)<br /> <h3 class="col-xs-12 col-sm-3">Add Fund details <label class="col-xs-12 col-sm-3 control-label" for="Product1</label> <input type="text" name="fundName" class="form-control" id="fundName1" required="required" placeholder="Fund 1"> < <h3 class="col-xs-12 col-sm-3">Add Product details <label class="col-xs-12 col-sm-3 control-label" for="Product2</label> <input type="text" name="fundName" class="form-control" id="fundName2" required="required" placeholder="Fund 2"> <label class="col-xs-12 col-sm-3 control-label"></label> (or Select Product) |
请参考此stackoverflow答案以了解如何使用ng。
You can use ng-if to achieve if(){..} else{..} in Angular.js.
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4 <!-- If block -->
<!-- Your Else Block -->
另外,我已经在代码笔中修改了您的代码片段以使用ng if,请参见此处。https://codepen.io/silicarich/pen/pjwwpv
JS
1 | var TestApp = angular.module("TestApp", []); |
HTML
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | <html> <head> </head> <body ng-app='TestApp'> <!-- Will display if showme == true --> <h3 class="col-xs-12 col-sm-3">Add Product details // showme1 <label class="col-xs-12 col-sm-3 control-label" for="Product1"></label> <input type="text" name="productName" class="form-control" id="productName1" required="required" placeholder="Product 1"> <h3 class="col-xs-12 col-sm-3">Add Product details // showme1 <label class="col-xs-12 col-sm-3 control-label" for="Product2"></label> <input type="text" name="productName" class="form-control" id="productName2" required="required" placeholder="Product 2"> <label class="col-xs-12 col-sm-3 control-label"></label> (or Select Fund) // showme2<br /> <!-- Will display if showme == false --> <h3 class="col-xs-12 col-sm-3">Add Fund details // showme2 <label class="col-xs-12 col-sm-3 control-label" for="Product1"></label> <input type="text" name="fundName" class="form-control" id="fundName1" required="required" placeholder="Fund 1"> <h3 class="col-xs-12 col-sm-3">Add Fund details // showme2 <label class="col-xs-12 col-sm-3 control-label" for="Product2"></label> <input type="text" name="fundName" class="form-control" id="fundName2" required="required" placeholder="Fund 2"> <label class="col-xs-12 col-sm-3 control-label"></label> (or Select Product) // showme1 </body> </html> |
希望这有帮助。