angular 部分选项，选择任何选项时应加载新的 div

Question

我想 select 医生姓名中的任何选项，并且无论单击什么名称，都应该加载 div。新 div 应该为每个选项加载 selected.

 <select 
    class="docName" 
    [(ngModel)]="selectedID" 
    (ngModelChange)="doctorId($event)">
    <option disabled> Select Doctor</option>
    <option 
        *ngFor="let name of doctor" 
        id="{{ name.user_id }}" 
        [ngValue]="name">
        {{ name.doctor_name }}
    </option>
</select>

<div>show this data</div>

TScode，显示医生姓名：

doctorId(doctor_Id) {
    this.delete = false;
    if (doctor_Id === "All") {
      this.doctorID = doctor_Id;

    } else {
      this.doctorID = doctor_Id.user_id;

    }

Answer 1

只需使用 CommonModule 中的 *ngIf。总是尽量保持简单。示例：

<div *ngIf="doctorID">{{doctorID}}</div> // Display what ever you want after a selection was mage

如果没有选择医生，请将您的 doctorID 设置为 undefined 或 null。

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