Skip to content

json

  • JSON or JavaScript Object Notation
  • is a lightweight text-based open standard designed for human-readable data interchange. Conventions used by JSON are known to programmers, which include C, C++, Java, Python, Perl, etc.
  • It was designed for human-readable data interchange.
  • It has been extended from the JavaScript scripting language.
  • The filename extension is .json.
  • JSON Internet Media type is application/json.
  • The Uniform Type Identifier is public.json.

Uses of JSON

  • It is used while writing JavaScript based applications that includes browser extensions and websites.
  • JSON format is used for serializing and transmitting structured data over network connection.
  • It is primarily used to transmit data between a server and web applications.
  • Web services and APIs use JSON format to provide public data.
  • It can be used with modern programming languages.

Characteristics of JSON

  • JSON is easy to read and write.
  • It is a lightweight text-based interchange format.
  • JSON is language independent. Simple Example in JSON The following example shows how to use JSON to store information related to books based on their topic and edition.
{
  "book": [
    {
      "id": "01",
      "language": "Java",
      "edition": "third",
      "author": "Herbert Schildt"
    },
    {
      "id": "07",
      "language": "C++",
      "edition": "second",
      "author": "E.Balagurusamy"
    }
  ]
}

<html>
  <head>
    <title>JSON example</title>
    <script language="javascript">
      var object1 = { language: "Java", author: "herbert schildt" };
      document.write("<h1>JSON with JavaScript example</h1>");
      document.write("<br>");
      document.write("<h3>Language = " + object1.language + "</h3>");
      document.write("<h3>Author = " + object1.author + "</h3>");

      var object2 = { language: "C++", author: "E-Balagurusamy" };
      document.write("<br>");
      document.write("<h3>Language = " + object2.language + "</h3>");
      document.write("<h3>Author = " + object2.author + "</h3>");

      document.write("<hr />");
      document.write(
        object2.language +
          " programming language can be studied " +
          "from book written by " +
          object2.author
      );
      document.write("<hr />");
    </script>
  </head>

  <body></body>
</html>