将选择值与Angular 4中的ngModel关联 [英] Associate select value to ngModel in Angular 4

问题描述

我正在使用Angular4轮胎将ngValue与ngModel关联，但得到 Null .因此，请帮助我将 ngValue 连接到 ngModel

I'm using Angular4 tyring to associate ngValue to ngModel but getting Null. So kindly help me to connect ngValue to ngModel

<select name="gender" [(ngModel)]="nameForm.gender">
  <option [ngValue]="Male">Male</option>
  <option [ngValue]="Female">Female</option>
  <option [ngValue]="Others">Others</option>
</select>

推荐答案

环绕单引号'Male'

<select name="gender" [(ngModel)]="nameForm.gender">
    <option [ngValue]="'Male'">Male</option>
    <option [ngValue]="'Female'">Female</option>
    <option [ngValue]="'Others'">Others</option>
 </select>

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