如何在angular js

Question

我在为Angular JS中的表单赋值时遇到问题，单击编辑后，我正在使用ngModel将值赋给表单域。输入类型文件我在chrome中出现错误

您能帮我找到解决方法吗？

Answer 1

这是我的HTML代码，与ng-model绑定

 <div class="col-xs-4">
                            <div class="height:100%;">
                                <input type="file"  ng-model="addmaterials.vray_mat_file" name="material_vray_mat"  id="material_vray_mat" class="hidden"  required="" ng-model-options="{ allowInvalid: true }"/>            
                                <label class="mat_file" for="material_vray_mat" >Upload Mat file</label>
                            </div>
                    </div>
                    <div class="col-xs-4">
                        <div class="height:100%;">
                            <input type="file"     required=""  ng-model="addmaterials.vray_sbsar_file" name="material_vray_sbsar" id="material_vray_sbsar" ng-disabled="!addmaterials.createdWithSubstance"  class="hidden"  >            
                            <label class="mat_file" for="material_vray_sbsar" >Upload Sbsar</label>
                        </div>
                    </div>
                    <div class="col-xs-4">
                            <div class="height:100%;">
                                <input type="file" required=""  onchange="angular.element(this).scope().setVrayPrevImg(this)"  ng-model="addmaterials.vray_prev_img" name="material_vray_prev"     id="material_vray_prev" class="hidden"  >            
                                <label class="mat_file" for="material_vray_prev" >Upload Preview</label>
                            </div>
                    </div>