Utilize a counter beyond the ngFor loop

I need to find a way to determine the number of rows in my table without using the ngFor directive. Here is an example of what I am trying to achieve:

<table class="table">
  <thead>
    <tr>
      <th scope="col">#</th>
      <th scope="col">Name</th>
      <th scope="col">IP</th>
      <th scope="col">Session_ID</th>
    </tr>
  </thead>
  <tbody>
    <tr *ngFor='let obj of methodResponse; let theIndex = index;'>
      <th scope="row"> {{theIndex + 1}}</th>
      <td>{{obj.name}}</td>
      <td>{{obj.sourceIp}}</td>
      <td>{{obj.sessionId}}</td>
    </tr>
  <!-- Now, how do I get the total row count outside of the ngFor loop? -->
  </tbody>
</table>

I have attempted to create a function within the ngFor loop but it did not work as expected. Can anyone provide any guidance on how to accomplish this?

Answer №1

To determine the number of elements in the table, you can utilize the length property of the array.

<table class="table">
  <thead>
    <tr>
      <th scope="col">#</th>
      <th scope="col">Name</th>
      <th scope="col">IP</th>
      <th scope="col">Session_ID</th>
    </tr>
  </thead>
  <tbody>
    <tr *ngFor='let obj of methodResponse; let theIndex = index;'>
      <td scope="row"> {{theIndex + 1}}</td>
      <td>{{obj.name}}</td>
      <td>{{obj.sourceIp}}</td>
      <td>{{obj.sessionId}}</td>
    </tr>
  </tbody>
  <tfoot>
    <tr>
      <td></td>
      <td></td>
      <td></td>
      <td>{{methodResponse.length}}</td>
    </tr>
  </tfoot>
</table>

Answer №2

// The concluding assessment of theIndex can be determined with this code snippet

Ultimate value: {{methodResponse.length - 1}}

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