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VistasHow to print variable only once in ngFor?
and i need to print some "printDay" by condition only once, how can i do it?
<div class="message" *ngFor="let message of messages">
<div *ngIf="lastMessageDate !== firstMessageDate " class="print-date" >{{printDay}}</div>
<div [ngClass]="{'message__sent': message.messageType === 'sent'}" class="message__wrap message-item">
<div class="message-item__data data">
<span class="data__title">{{message.name}} {{message.DATE | date: 'HH:mm'}}</span>
<div class="data__text">{{message.message}}</div>
<div class="data__file-wrap file-wrap" *ngIf="message.send_diagnostic_data">
<app-download-file (fileDownloadEvent)="downloadFile('log', message.UUID)"
[fileLabel]="'Отчет по логам'"></app-download-file>
<app-download-file (fileDownloadEvent)="downloadFile('telemetry', message.UUID)"
[fileLabel]="'Отчет по телеметрии'"></app-download-file>
</div>
</div>
</div>
</div>
·
Juan Pablo Isaza
1 Respuestas
Responde la pregunta0
If you want to print something only in the first child you can use first directive:
<div *ngFor="let message of messages; first as isFirst">
<div *ngIf="isFirst"> {{ printSomething() }} </div>
</div>
·
Juan Pablo Isaza
Denunciar
Responde la pregunta