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[英]How can I disable the button click in my Ionic 3 Angular app until the toast message gets dismissed?
[英]How do I disable the button until I select gender in Ionic?
我试过这个:
<ion-item>
<ion-label>Gender</ion-label>
<ion-select
required
ngModel
#genderCtrl="ngModel"
[(ngModel)]="gender"
[ngModelOptions]="{standalone: true}"
placeholder="Select One">
<ion-select-option value="female">Female</ion-select-option>
<ion-select-option value="male">Male</ion-select-option>
</ion-select>
</ion-item>
<ion-item *ngIf="!genderCtrl.valid && genderCtrl.touched" >
<ion-label>
Please select gender.
</ion-label>
</ion-item>
<ion-button
[disabled]="!form.valid"
type="submit"
expand="block">
Add patient
</ion-button>
*ngIf 有效,所以如果我不选择 select 是无效的,但是根据 ion-button,完整的形式是有效的......我也试过了(ionChange)但它也不起作用.. ..
除了使用form.valid
,你可以使用你的gender
object 吗?
<ion-button [disabled]="!gender" type="submit" expand="block">
Add patient
</ion-button>
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