I don't know what I am doing wrong, I don't get any response from the server to work using Http. I added the project as plunker if someone could have a deeper look.
https://plnkr.co/edit/3HybQY3vcsCImbuFCWrP?p=preview
post.service.ts
getPosts(){
return this._http.get("http://jsonplaceholder.typicode.com/posts")
.map(res => res.json());
}
app.component.ts
constructor(private _postService: PostService) {
_postService.getPosts()
.subscribe(res => console.log(res));
}