Question

我正在努力用* ngFor循环显示我的数据。我希望ngFor每行显示3个数据。我尝试索引。但后来只有1件/行。

"elasticloadbalancing:DeregisterTargets",
    "elasticloadbalancing:Describe*",           "elasticloadbalancing:Describe*",
    "elasticloadbalancing:RegisterInstancesWithLoadBalancer",           "elasticloadbalancing:RegisterInstancesWithLoadBalancer",
    "elasticloadbalancing:RegisterTargets"          "elasticloadbalancing:RegisterTargets",
    "logs:CreateLogGroup",
    "logs:CreateLogStream",
    "logs:DescribeLogStreams",
    "logs:PutSubscriptionFilter",
    "logs:PutLogEvents"

我将非常感谢您的帮助。我正在使用

<div class="container">
  <div class="row">
    <div class="mb-3 card-deck text-center">
      <div class="card mb-4 box-shadow" *ngFor="let product of item.product;">
        <div class="card-header">
            <h4 class="my-0 font-weight-normal">{{ product.name }}</h4>
        </div>
        <div class="card-body">
                <img src="{{ product.imagePath}}" class="img-thumbnail" alt="{{ product.name }}"> 
                <p class="lead">{{ product.msg }} {{ product.msg2 }}</p>
                <a role="button" class="btn btn-lg btn-block btn-primary" routerLink="product-details">More...</a>
        </div>
      </div>
    </div>
  </div>
</div>

Answer 1

您可以使用Bootstrap CSS类每行显示3个项目

具有与html文件类似的结构

<div class="row">
 <div class="col-4 col-sm-4 col-md-4 col-lg-4" *ngFor="let product of item.products">
  {{product.name}} | {{product.imagePath}} | {{product.msg2}} <!-- display product data -->
 </div>
</div>

Answer 2

您只需将逻辑放在index上，如下所示：

<div *ngFor="let item of items; let i = index">
  <div *ngIf="i % 3 == 0" class="row">
    {{ item }}
    <div *ngIf="i + 1 < items.length">{{ items[i + 1] }}</div>
    <div *ngIf="i + 2 < items.length">{{ items[i + 2] }}</div>
  </div>
</div>

ng对于每行项目

2 个答案: