var students = [
  { name: 'Alice', age: 20, grade: 'A' },
  { name: 'Bob', age: 22, grade: 'B' },
  { name: 'Charlie', age: 21, grade: 'A-' }
];

var jsonStr = JSON.stringify(students);

var jsonObj = JSON.parse(jsonStr);

<table>
  <thead>
    <tr>
      <th>Name</th>
      <th>Age</th>
      <th>Grade</th>
    </tr>
  </thead>
  <tbody>
    <tr *ngFor="let student of students">
      <td>{{ student.name }}</td>
      <td>{{ student.age }}</td>
      <td>{{ student.grade }}</td>
    </tr>
  </tbody>
</table>