can we loop like ngFor in typescript

Issue

I want to loop a data like ngFor in typescript can we do the same. I'll share my code below

 <table id="pdfData" *ngFor="let hubxReport of hubxReportList; let i=index">
    <tr>
      <th>{{hubxReport.categoryName}} + "Test"</th>
    </tr>
    <tr>
      <th>{{column}}</th>
    </tr>
    <tr *ngFor="let item of hubxReport.hubxDataItems">
      <td></td>
      <td>{{item.itemTitle}}</td>
      <td>{{item.itemValue}}</td>
      <td>{{item.itemUnit}}</td>
      <td>{{item.normalRange}}</td>
    </tr>
  </table>

i want to implement the same way im looping in typescript

Solution

In my opinion ngFor is the easiet way to do that. Anyway Op wants to to do it in typescript. You need to go through the hubxReportList and create a table and append some tr and td. Then append the table into your body by Renderer2.

Here is a sample that I created:

export class AppComponent  {
  name = 'Angular';

  hubxReportList = [
    {categoryName: 'nameheader', categoryvalue:'valueheader' , hubxDataItems:  [{itemTitle: 'title',  itemValue: 'value'}]},
    {categoryName: 'nameheader1', categoryvalue:'valueheader1', hubxDataItems: [{itemTitle: 'title1', itemValue: 'value1'}]},
    {categoryName: 'nameheader2', categoryvalue:'valueheader2', hubxDataItems: [{itemTitle: 'title2', itemValue: 'value2'}]},
    {categoryName: 'nameheader3', categoryvalue:'valueheader3', hubxDataItems: [{itemTitle: 'title3', itemValue: 'value3'}]},
  ]

  @ViewChild('div') div: ElementRef;
  
  constructor (private renderer: Renderer2){

  }
  addElement() {
    this.hubxReportList.forEach(t=> {
      const table: HTMLTableElement = this.renderer.createElement('table');
      table.createTHead();
      var hrow = table.tHead.insertRow(0);
      var cell = hrow.insertCell(0);
      cell.innerHTML = t.categoryName;
      cell = hrow.insertCell(1);
      cell.innerHTML = t.categoryvalue;

      var tbody =  table.createTBody();
      t.hubxDataItems.forEach(sub =>{
        var row = table.tBodies[0].insertRow(0);
        var c = row.insertCell(0);
        c.innerHTML = sub.itemTitle;
        c = row.insertCell(1);
        c.innerHTML = sub.itemValue;
      })

      this.renderer.appendChild(this.div.nativeElement, table)
    })
  }

StackBlitz

Answered By - Alireza Ahmadi