检查输入是否为0，如果输入为0，则禁用提交按钮-Angular.js

Question

 app.controller('HelloController', function($scope) { console.log($scope.input1); console.log($scope.input2); if (($scope.op_option == 4) && ($scope.input2 == 0)) { myForm.$invalid; } }); 

 <form id="calc" method="post" action="/" ng-app="myApp" name="myForm" ng-controller="HelloController" novalidate> <div class="row"> <div class="col-xs-2"> <input type="number" class="form-control" name="op1" placeholder="Enter 1st number" ng-model="input1" required> <span style="color:red" ng-show="myForm.op1.$dirty && myForm.op1.$invalid"> <span ng-message="myForm.op1.$error.required">Number is required</span> </span> </div> <div class="col-xs-2"> <select class="form-control" name="op_option" ng-model="oper"> <option value="1">+</option> <option value="2">-</option> <option value="3">*</option> <option value="4">/</option> </select> </div> <div class="col-xs-2"> <input type="number" class="form-control" name="op2" placeholder="Enter 2nd number" ng-model="input2" required> <span style="color:red" ng-show="myForm.op2.$dirty && myForm.op2.$invalid"> <span ng-message="myForm.op2.$error.required">Number is required</span> </span> </div> </div> <br> <div class="row"> <div class="col-xs-12"> <button type="submit" class="btn btn-success" ng-disabled="myForm.$invalid">Calculate</button> </div> </div> </form> 

我希望这段代码检查op_option是否被除法（即4）并且input2为0。因此它将b除以0。因此我想禁用Submit按钮。 input2是第二个选项，op_option是操作，即在我的情况下除以禁用按钮。 同样，代码console.log（$ scope.input1）在浏览器控制台页面上显示为undefined。 请帮助实现这一目标

Answer 1

请尝试以下选项。 希望这能解决您的问题。

 // Code goes here angular.module('app', []) .controller('HelloController', function($scope) {}); 

 <div class="row"> <div class="col-xs-12"> <button type="submit" class="btn btn-success" ng-disabled="oper == 4 && input2 == 0">Calculate</button> </div> </div>