我對 Angular (8) 還很陌生，我嘗試獲取輸入值的長度，我以*ngFor如下方式創(chuàng)建了它：<div *ngFor="let panel of panels; index as i" class="panel" [id]="'panel-' + panel.id"> <div>{{ panel.title }}</div> <input matInput placeholder="Bezeichnung" [(ngModel)]="panel.title" /></div>我將如何訪問panel.title班級中的長度？這是我的接口/類export interface ProgressbarStepData { // Each progressbar step is represented by an instance of this data type. id: number; // Unique ID title: string; // The label that is displayed as the step title. color: string; // Hex code of the colored markings associated with this step. Only visible in Builder, not Viewer. order: number; // Denotes which step this is (from step 1 to <number of steps>)}export class ProgressbarEditorComponent implements OnInit { public panels: Array<ProgressbarStepData> = []; // One panel for each existing progressbar step ...我需要什么才能獲得當前輸入的輸入長度？編輯澄清我想要實現(xiàn)的目標：我想計算在 CURRENT 輸入中鍵入的字符數并觸發(fā)來自類的警報（而不是來自模板本身）
獲取 *ngFor 中的文本長度
Qyouu
2021-11-04 17:41:41
