用AngularJS监察表单按钮的禁用效果

这里主要是用到了$watch监察数据的变化，并用正则判断数据是否符合要求。

关键HTML代码：

<div class="row row-form">
      <div class="col col-form">
        <div class="list">
          <div class="row row-code">
            <div class="col col-60 col-mobile">
              <label class="item item-input mobile-btn">
                <input type="text" placeholder="手机号" name="mobile_num" id="mobile_num" ng-model="mobileNum">
              </label>
            </div>
            <div class="col col-40 col-code">
                <input type="button" class="button button-block code-btn" id="get_num_btn" ng-click="getCode()" ng-value="info" ng-disabled="isDisabled">
            </div>
          </div>

          <label class="item item-input">
            <input type="text" placeholder="验证码" name="check_num" id="check_num" ng-model="codeNum">
          </label>
          <button class="button button-block button-my-style" id="submit_btn" ng-click="submit()" ng-disabled="isSubmitted">提 交</button>
        </div>
      </div>
    </div>

.col-form{
  padding: 5% 2%;
  margin-bottom: 10%;
}
.col-form .list label{
   margin-bottom:0.2rem;
   border-radius: 0.5rem;
}
.col-form .list input{
  font:normal 1rem fzltxhjw;
}
.item-my-style{
  padding: 0.5rem;
}
.row-code{
  padding-left: 0;
  padding-right: 0;
}
.button.code-btn{
  margin:0;
  border-radius: 0.5rem;
  background-color: #ffba07;
  color: #51110a;
}
.col-mobile{
  padding-left: 0;
}
.col-code{
  padding-right: 0;
}

var myApp=angular.module('myApp',['ionic']);
myApp.controller("FirstController",["$scope",function($scope){
    //监察手机号
    $scope.isDisabled=true;
    $scope.mobileNum="";
    $scope.mobileVal=function(){
        return $scope.mobileNum;
    };
    $scope.$watch($scope.mobileVal,function(newValue,oldValue){
        var regex = /^(13[0-9]|14[0-9]|15[0-9]|17[0-9]|18[0-9])d{8}$/;
        if(regex.test(newValue)){
            $scope.isDisabled=false;
        }else{
            $scope.isDisabled=true;
        }
    });
    //监察验证码
    $scope.isSubmitted=true;
    $scope.codeNum="";
    $scope.codeVal=function(){
        return $scope.codeNum;
    };
    $scope.$watch($scope.codeVal,oldValue){
        if(newValue.length==4){
            $scope.isSubmitted=false;
        }else{
            $scope.isSubmitted=true;
        }
    });
    
}]);

（编辑：李大同）

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