Javascript ng-multiselect-dropdown-angular7（onDeSelect）不工作

我正在尝试获取取消选择的项目的ID，但（onDeSelect）在ng-multiselect-dropdown-angular7中不起作用：

---

这是我尝试使用的方法

当您选择一个选项时，会调用OnSelectAll，您需要在您的typescript文件中创建onItemDeSelect函数

并使用以下HTML：

<ng-multiselect-dropdown-angular7 [placeholder]="'custom placeholder' [data]="dropdownList" [(ngModel)]="selectedItems" [settings]="dropdownSettings" (onSelect)="onItemSelect($event)" (onSelectAll)="onSelectAll($event)" (onDeSelect)="onItemDeSelect($event)"> </ng-multiselect-dropdown-angular7>

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当您选择一个选项时，会调用OnSelectAll，您需要在您的typescript文件中创建onItemDeSelect函数

并使用以下HTML：

<ng-multiselect-dropdown-angular7 [placeholder]="'custom placeholder' [data]="dropdownList" [(ngModel)]="selectedItems" [settings]="dropdownSettings" (onSelect)="onItemSelect($event)" (onSelectAll)="onSelectAll($event)" (onDeSelect)="onItemDeSelect($event)"> </ng-multiselect-dropdown-angular7>

像这样定义组件中的事件

  onItemDeSelect(item: any) {
    console.log('onItemDeSelect', item);
  }

<ng-multiselect-dropdown-angular7 ... (onDeSelect)="onItemDeSelect($event)"></ng-multiselect-dropdown-angular7>

并在视图上使用onDeSelect，如下所示

  onItemDeSelect(item: any) {
    console.log('onItemDeSelect', item);
  }

<ng-multiselect-dropdown-angular7 ... (onDeSelect)="onItemDeSelect($event)"></ng-multiselect-dropdown-angular7>

像这样定义组件中的事件

  onItemDeSelect(item: any) {
    console.log('onItemDeSelect', item);
  }

<ng-multiselect-dropdown-angular7 ... (onDeSelect)="onItemDeSelect($event)"></ng-multiselect-dropdown-angular7>

并在视图上使用onDeSelect，如下所示

  onItemDeSelect(item: any) {
    console.log('onItemDeSelect', item);
  }

<ng-multiselect-dropdown-angular7 ... (onDeSelect)="onItemDeSelect($event)"></ng-multiselect-dropdown-angular7>


这是我的代码

在HTML中

    <ng-multiselect-dropdown class=""
          placeholder="Select value" 
          [data]="dropdownData"
          [settings]="dropdownSettings"
          (onSelect)="onItemSelect($event)"
          (onSelectAll)="onSelectAll($event)"
          (onDeSelect)="onItemDeSelect($event)"
          (onDeSelectAll)="onDeSelectAll($event)">
      </ng-multiselect-dropdown> 

这是我的密码

在HTML中

    <ng-multiselect-dropdown class=""
          placeholder="Select value" 
          [data]="dropdownData"
          [settings]="dropdownSettings"
          (onSelect)="onItemSelect($event)"
          (onSelectAll)="onSelectAll($event)"
          (onDeSelect)="onItemDeSelect($event)"
          (onDeSelectAll)="onDeSelectAll($event)">
      </ng-multiselect-dropdown> 

你能发布你的视图（html）代码吗。