Question

我有这样的表格：

<div ng-repeat="item in ctrl.cartItems">
    <div class="col-sm-4 cartItemLabel" ng-bind-html="item.label">  </div>
    <div class="col-sm-2 inputItem">
         <input class="form-control input" type="text" id="item.id" name="item.id" ng-change="ctrl.updateSub(item)" ng-model="item.qty" max="item.maxqty">
   </div>
   <div class="col-sm-1 inputItemValue">
       <span ng-bind="item.maxqty"></span>
   </div>
   <div class="col-sm-2 inputItemValue">
       <span ng-bind="item.value | currency:USD$:2"></span>
   </div>
   <div class="col-sm-1 inputItemValue">
       $
   </div>
   <div class="col-sm-2 inputItem">
       <input class="form-control" type="text" id="item.id" name="item.id" ng-model="item.subTotal">
   </div>
   <div class="col-sm-4"></div>
   <div class="col-sm-2 error" ng-show="form.item.id.$invalid">
     <small class="error" ng-show="form.item.id.$error.max">
        You exceeded the maximum allowed
     </small>
   </div>
 </div>

max的值设置为item.maxqty，它是从我的模型中的JSON中提取的。正确填充所有值。我似乎无法让验证工作。有任何想法吗？代码的重要部分深埋在灌木丛中:)所以，这是我需要验证的行：

<input class="form-control input" type="text" id="item.id" name="item.id" ng-change="ctrl.updateSub(item)" ng-model="item.qty" max="item.maxqty">

Answer 1

输入类型中有一个最大值=“text”。如果它不是第一，它将无法工作。那是吗？

必须

<input class="form-control input" type="number" id="item.id" name="item.id" ng-change="ctrl.updateSub(item)" ng-model="item.qty" max="item.maxqty">

修改此外，项目$ valid对此

是可以的
<div class="col-sm-2" ng-hide="form.item.id.$valid" > <small class="error" ng-show="form.item.id.$error.max">You exceeded the maximum </small> </div>

无论如何，在模型更大之前你不会看到验证，我习惯（输入将不允许你输入一个大于最大值的数字）check this fiddle在plnkr中

<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Example - example-number-input-directive-production</title> <script src="//ajax.googleapis.com/ajax/libs/angularjs/1.4.0-rc.0/angular.min.js"></script> </head> <body ng-app="numberExample"> <script> angular.module('numberExample', []) .controller('ExampleController', ['$scope', function($scope) { $scope.example = { value: 12 }; }]); </script> <form name="myForm" ng-controller="ExampleController"> <label>Number <input type="number" name="input" ng-model="example.value" min="0" max="10" required> </label> <div role="alert"> <span class="error" ng-show="myForm.input.$error.required"> Required!</span> <span class="error" ng-show="myForm.input.$error.number"> Not valid number!</span> <span class="error" ng-show="myForm.input.$error.max"> THIS IS A BIG NUMBER!</span> </div> <h1> PLEASE TRY TO PUT A NUMBER BIGGER THAN 10</h1> <tt>value = {{example.value}}</tt><br/> <tt>myForm.input.max = {{myForm.input.$max}}</tt><br/> <tt>myForm.input.$valid = {{myForm.input.$valid}}</tt><br/> <tt>myForm.input.$error = {{myForm.input.$error}}</tt><br/> <tt>myForm.$valid = {{myForm.$valid}}</tt><br/> <tt>myForm.$error.required = {{!!myForm.$error.required}}</tt><br/> </form> </body> </html>

如何根据从模型中提取的最大值来验证表单输入？

1 个答案: