peerx.on('signal', function(data)
{

   console.log("1");

   console.log(JSON.stringify(data));

   this.targetpeer = data;

   **this.initiatorOffer = JSON.stringify(data);  // i have initialized there**

   console.log(this.initiatorOffer);


}

this._chatservice.clientconnected().subscribe(data => {

   **console.log(this.initiatorOffer);** // getting value

})

peerx.on('signal', function(data)
{
   this.ngZone.run(() => {
      console.log("1");
      console.log(JSON.stringify(data));
      this.targetpeer = data;
      this.initiatorOffer = JSON.stringify(data);  // i have initialized there**
      console.log(this.initiatorOffer);
   })
})