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如何从angularjs / javascript中的特定位置删除数组中的元素

[英]How to remove an element from an array at particular position in angularjs/javascript

在我的情况下,我有一个表单,当我点击添加按钮功能和图像字段行将动态添加,我可以添加数据。现在我想删除某个位置的特定行。我尝试使用拼接切片和弹出.But pop只删除最后一行。当我使用切片和拼接时,删除行的数据不会清除,而行本身也不会清除。这是我的代码如下

$scope.rows = [];  
$scope.current_rows = 1;
$scope.destination_details = {};
$scope.rows.push({
    row_num: $scope.current_rows
});

// code for adding a row dynamically
 $scope.add = function () {
    $scope.rows.push({
        row_num: $scope.current_rows + 1,
    });
};

//code for removing row dynamically
     $scope.remove = function ($index) {
    $scope.rows.splice({
        row_num: ($index, 1),
    });
    $scope.destination_details.destination_features1[$index] = '';
    $scope.destination_image_arr[$index] = '';
};

当我使用:

    $scope.rows.slice({
        row_num: ($index, 1),
    }); 

它正在清除该特定位置的数据,但该行未关闭。 当我使用:

   $scope.rows.pop({
        row_num: $scope.current_rows - 1,
    }); 

只有最后一行正在删除。 这是我的HTML代码:

  <div class="row" ng-repeat="row in rows track by $index">             
            <div class="col s12 m4">
                <label>Upload Images </label>
                <div class="input-field col s11">
                    <input  type="file" id="image" name="image_{{$index}}" ng-files="get_files($files,$index)" ng-model="destination_details.image[$index]" ng-required="true" multiple/>
                    <div ng-messages="add_destination_form['image_' + $index].$error" ng-if="add_destination_form['image_' + $index].$dirty || add_destination_form.$submitted">
                        <div ng-message-exp="['required']">
                            <span class="error">Please add alteast one image !</span> 
                        </div>
                    </div>
                    <div ng-if="destination_image_arr[$index].length > 0" id="post_img">                      
                        <a ng-click="uncheck_files($index)"  title="close" style="cursor:pointer" class="close_image_upload">X</a>    
                        <img  class="thumb" ng-src="{{destination_image_arr[$index]}}">
                    </div>
                    <div id="img_err_msg"></div>
                    <br><br><br>
                  </div>                                       
               </div>
            <div class="col s12 m4" >
                <label for="destination_features1" >Features</label>
                <textarea  id="destination_features1" name="destination_features1_{{$index}}" ng-model="destination_details.destination_features1[$index]" placeholder="Mandatory" type="text" ng-required="true"></textarea>                        
                <div ng-messages="add_destination_form['destination_features1_' + $index].$error" ng-if="add_destination_form['destination_features1_' + $index].$dirty || add_destination_form.$submitted">
                    <div ng-message-exp="['required']">
                        <span class="error">Description is required</span>  
                    </div>
                </div> 
            </div>
             <div class="col s12 m4">   
                <button ng-show="show_removebtn" id="removeButton" class="waves-effect waves-light btn" ng-click="removeDynamically($index)" type="button">Remove</button>                              
            </div>
        </div>
        <div class="col s12 m4">                 
         <button class="waves-effect waves-light btn" ng-click="addDynamically()" type="button">Add More</button>                               
        </div>

任何帮助将不胜感激。谢谢

如果你想拼接一个特定的位置。 这是参考Array.prototype.splice()

 var array = [1, 2, 3, 4] array.splice(2, 1); console.log(array); 

此处位置2已被删除,它将在第二个参数中删除1次定义。

在您的代码中尝试执行此操作:

$scope.rows.splice($index, 1);

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