ERROR SyntaxError: Unexpected end of JSON input?

Question

I have an angular project and I have the following error:

ERROR SyntaxError: Unexpected end of JSON input
        at JSON.parse (<anonymous>)
        at Response.Body.json (http.js:1091)
        at SafeSubscriber.eval [as _next] (home.component.ts:57)
        at SafeSubscriber.__tryOrUnsub (Subscriber.js:243)
        at SafeSubscriber.next (Subscriber.js:190)
        at Subscriber._next (Subscriber.js:131)
        at Subscriber.next (Subscriber.js:95)
        at MapSubscriber._next (map.js:85)
        at MapSubscriber.Subscriber.next (Subscriber.js:95)
        at XMLHttpRequest.onLoad (http.js:1591)

in the chrome console. (home.component.ts:57):

  getBooks() {
    const promise = this._homeService.getBooks();
    promise.subscribe(
      data => {
        var jsonObject = data.json();
        console.log(jsonObject);
        this.books = jsonObject;
      },
      error => {
        console.log(error);
      });
  }

the line 57 is

var jsonObject = data.json();

can anybody help me please..

TheUnreal · Accepted Answer · 2018-06-13 15:49:28Z

1

It's very confusing that you name your observable as promise.
I guess you don't need to data.json(), if you are using the HttpCientModule of Angular it is by default.

answered Jun 13, 2018 at 15:49

TheUnreal

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3 Comments

Kasoir Abbas Over a year ago

unfortunately, it was working very well ,suddenly stop work, Don't know what is the problem??

TheUnreal Over a year ago

Can you share the response from the server? does it is a valid JSON? Maybe you broke something in your API endpoint?

Kasoir Abbas Over a year ago

do you know ?? it's was just a wrong password for sql server hhhh.

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