Html code::
<tr *ngFor="let notes of notes; let i = index">
<td>{{notes.title}}</td>
<td>{{notes.body}}</td>
</tr>
i just did this.notes=JSON.parse(data._body); and worked remaining code is as above.
data => {
console.log(data._body);
this.notes=JSON.parse(data._body); // parsing here
console.log("notes array"+this.title);
console.log("Title :: "+this.notes.title);
},