What is the process for determining the quantity of unique names within a JSON file?

How can I efficiently loop through each "book" to ensure the same execution for all?

This is how my JSON looks like:

{
  "bookstore": {
    "book": [
      {
        "-category": "cooking",
        "title": {
          "-lang": "en",
          "#text": "Everyday Italian"
        },
        "author": "Giada De Laurentiis",
        "year": "2005",
        "price": "30.00"
      },
      {
        "-category": "children",
        "title": {
          "-lang": "en",
          "#text": "Harry Potter"
        },
        "author": "J K. Rowling",
        "year": "2005",
        "price": "29.99"
      },
      {
        "-category": "web",
        "title": {
          "-lang": "en",
          "#text": "Learning XML"
        },
        "author": "Erik T. Ray",
        "year": "2003",
        "price": "39.95"
      }
    ]
  }
}

I can easily create headings for each book and display their content, but when it comes to looping through them, that's where I struggle. Can anyone provide some guidance or ideas on how to accomplish this?

javascriptjsonfor-loop

Answer №1

In order to retrieve the data you need, first access the nested object followed by the array within it.

var bookstoreObj= jsonData["bookstore"];
var bookArr=bookstoreObj["book"];

Once you have extracted your book array, proceed with iterating through it.

for(var i=0;i<bookArr.length;i++)
{
   var book=bookArr[i];
  //Retrieve desired values such as category, author, year, price and so on
   var author= book["author"];

  //Access the title object:
  var title=book["title"] ;
  //You can now retrieve details such as lang, #text field
  var lang= title["-lang"];
  var text=title["#text"];

}

In this context,

jsonData

refers to the

jsonObject structure

that has been displayed.

Answer №2

What is the specific goal you are aiming for? In case you wish to iterate through a book, consider using this method

bookstore.book.forEach(element => {
 //your logic here
}

If you have any other queries or requirements, feel free to provide more details!

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