[英]How to use *ngIf to get value in slide IONIC
我在幻灯片中使用* ngIf来获取幻灯片中id_qtype的所有值
id_qtype参数有5个值是:
id_qtype = 1;
id_qtype = 2;
id_qtype = 3;
id_qtype = 4;
id_qtype = 5;
当我使用* ngIf如下时,它似乎获取数据不正确
我的资料来源:
HTML :
<ion-slides>
<ion-slide *ngFor="let myValue of item; let i = index;">
<div *ngIf="myValue.id_qtype =='1'> <!-- ;else elsetag" -->
<ion-list radio-group>
<ion-item no-lines no-padding class="mark_answer_inside">
<ion-label>① <div class="mark_answer" [innerHTML]= "myValue.ex1"></div></ion-label>
</ion-item>
<ion-item no-lines no-padding>
<ion-label>② <div class="mark_answer" [innerHTML]= "myValue.ex2"></div> </ion-label>
</ion-item>
</ion-list>
</div>
<div *ngIf="myValue.id_qtype =='2'>
<ion-list radio-group>
<ion-item no-lines no-padding class="mark_answer_inside">
<ion-label>① <div class="mark_answer" [innerHTML]= "myValue.ex1"></div></ion-label>
</ion-item>
<ion-item no-lines no-padding>
<ion-label>② <div class="mark_answer" [innerHTML]= "myValue.ex2"></div> </ion-label>
</ion-item>
</ion-list>
</div>
<div *ngIf="myValue.id_qtype =='3'>
<ion-list radio-group>
<ion-item no-lines no-padding>
<ion-label>② <div class="mark_answer" [innerHTML]= "myValue.ex2"></div> </ion-label>
</ion-item>
</ion-list>
</div>
<div *ngIf="myValue.id_qtype =='4'>
<ion-list radio-group>
<ion-item no-lines no-padding class="mark_answer_inside">
<ion-label>① <div class="mark_answer" [innerHTML]= "myValue.ex1"></div></ion-label>
</ion-item>
<ion-item no-lines no-padding>
<ion-label>② <div class="mark_answer" [innerHTML]= "myValue.ex2"></div> </ion-label>
</ion-item>
</ion-list>
</div>
<div *ngIf="myValue.id_qtype =='5'>
<ion-list radio-group>
<ion-item no-lines no-padding class="mark_answer_inside">
<ion-label>① <div class="mark_answer" [innerHTML]= "myValue.ex1"></div></ion-label>
</ion-item>
</ion-list>
</div>
<ion-slides>
</ion-slide>
当幻灯片中id_qtype = 1或2或3或4或5时如何获得正确的值?
您可以像下面的代码一样使用ngSwitch
:
<div [(ngSwitch)]="caseView" class="content-div-style">
<ion-list *ngSwitchCase="'1'">
</ion-list>
<ion-list *ngSwitchCase="'2'">
</ion-list>
<ion-list *ngSwitchCase="'3'">
</ion-list>
</div>
根据以上代码,您可以在不同的情况下使用ngSwitch
。
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