Google Books API deoesn't return results for certain ISBNs

Question

Google Books API deoesn't return results for certain ISBNs

107 Views Asked by YouCannotProveIt At 10 April 2025 at 17:11

I am trying to use Google Books API to get results for a book but although the book is available on Google Books website the API doesn't return results for its ISBN

The ISBNs I am searching for are: 9781595086228 - 1595086226

The API Request:

https://www.googleapis.com/books/v1/volumes?q=isbn:9781595086228&key=<API Key>

and

https://www.googleapis.com/books/v1/volumes?q=isbn:1595086226&key=<API Key>

The response:

{kind: "books#volumes",
totalItems: 0
}

The Book page on Google Books:

https://books.google.com.eg/books?id=nAmyDwAAQBAJ&dq=9781595086228

I want to know if there is a problem with my request format or if the problem is not related to my request.

Original Q&A

There are 1 best solutions below

**ViBP** · Answer 1

The data type of typeof() ISBNs in the fetched object is string, thus need to include it in the call as the same type - imbed it as a variable in the URL using backticks. See the comments in the code:

<!DOCTYPE html>
<html lang="en">
<head>

  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">

  <title>test</title>

  <link href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-rbsA2VBKQhggwzxH7pPCaAqO46MgnOM80zW1RWuH61DGLwZJEdK2Kadq2F9CUG65" crossorigin="anonymous">
  
  <script 
      src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js" integrity="sha384-kenU1KFdBIe4zVF0s0G1M5b4hcpxyD9F7jL+jjXkk+Q2h455rYXK/7HAuoJl+0I4" crossorigin="anonymous">
  </script>

</head>

<body>   

  <form class="d-grid w-100 me-3" role="search">
    <input type="search" id="search" class="form-control" aria-label=" Search" autofocus>
  </form>

  <span id="ini">Looking for ISBN: 9781595086228 or 1595086226</span>
  <span id="results"></span>


<script>

document.getElementById("search").addEventListener("keypress", Search);

function Search (event) {

  if (event.key === "Enter") {
    event.preventDefault();
    var search = document.getElementById('search').value;
  }

  fetchApi(search)
}

function fetchApi (x) {

  url = `https://www.googleapis.com/books/v1/volumes?q=isbn:`+x+`&maxResults=40&startIndex=0`

  return fetch(url)
  .then((response) => response.json())
  .then((data) => {

    if (data.items) {
      //console.log(data)
      document.getElementById('results').innerHTML = `<h1>${data.items[0].volumeInfo.title}</h1>` + `<p>by ${data.items[0].volumeInfo.authors.join(", ")}</p>`;

z = data.items[0].volumeInfo.industryIdentifiers[0].identifier;
  
  console.log('typeofISBN:', typeof(z)); // API stores ISBN as a string
  console.log('typeofValue:', typeof(9781595086228)); // ISBN value directly would include it in the call as a number; thus include it as a sting in the call, which is possible using backticks as shown in the URL above
    }
  })
}
</script>


</body>
</html>

P.S if helps, please mark as answer.

Google Books API deoesn't return results for certain ISBNs

There are 1 best solutions below

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