我想要默认值＆＃x2b;输入值（用户输入）。我应该如何给出默认值？

发布于 2025-01-28 08:32:24 字数 733 浏览 4 评论 0 原文

TS文件

服务（已声明变量）

如果（请求=='Service帐户'）{

   this.service = "SVC_" + NgModel
}

html文件，

<mat-form-field appearance="fill">
              <mat-label>User ID</mat-label>
              <input matInput type="text" name="userid" placeholder="UserID" ngModel
                           [disabled]="inputUserId" (keyup)="onKeyUp($event)" click="onSelect(item)">
            </mat-form-field>

我想要的输出是当用户输入用户ID时，SVC应默认情况下，而任何用户类型假设1234则应显示为SVC_1234。

原文

ts file

service(declared variable)

if (request == 'Service Account') {

   this.service = "SVC_" + NgModel
}

html file

<mat-form-field appearance="fill">
              <mat-label>User ID</mat-label>
              <input matInput type="text" name="userid" placeholder="UserID" ngModel
                           [disabled]="inputUserId" (keyup)="onKeyUp($event)" click="onSelect(item)">
            </mat-form-field>

The output I want is when user enters userId, SVC should come by default and whatever user type suppose 1234 then it should show as SVC_1234.