JSON Objects

Creating Simple Objects

JSON objects can be created with JavaScript. Let us see the various ways of creating JSON objects using JavaScript −

var JSONObj = {};

var JSONObj = new Object();

·        Creation of an object with attribute bookname with value in string, attribute price with numeric value. Attribute is accessed by using '.' Operator −

var JSONObj = { "bookname ":"VB BLACK BOOK", "price":500 };

This is an example that shows creation of an object in javascript using JSON, save the below code as json_object.htm

<html>

   <head>

      <title>Creating Object JSON with JavaScript</title>

           

      <script language = "javascript" >

 

         var JSONObj = { "name" : "tutorialspoint.com", "year"  : 2005 };

                       

         document.write("<h1>JSON with JavaScript example</h1>");

         document.write("<br>");

         document.write("<h3>Website Name = "+JSONObj.name+"</h3>"); 

         document.write("<h3>Year = "+JSONObj.year+"</h3>"); 

 

      </script>

                       

   </head>

           

   <body>

   </body>

           

</html>

Now let's try to open Json Object using IE or any other javaScript enabled browser. It produces the following result −

Json Objects

Creating Array Objects

The following example shows creation of an array object in javascript using JSON, save the below code as json_array_object.htm

<html>

   <head>

      <title>Creation of array object in javascript using JSON</title>

                       

      <script language = "javascript" >

 

         document.writeln("<h2>JSON array object</h2>");

 

         var books = { "Pascal" : [

            { "Name"  : "Pascal Made Simple", "price" : 700 },

            { "Name"  : "Guide to Pascal", "price" : 400 }], 

                                                

            "Scala"  : [

               { "Name"  : "Scala for the Impatient", "price" : 1000 },

               { "Name"  : "Scala in Depth", "price" : 1300 }]   

         }   

 

         var i = 0

         document.writeln("<table border = '2'><tr>");

                                    

         for(i = 0;i<books.Pascal.length;i++){        

            document.writeln("<td>");

            document.writeln("<table border = '1' width = 100 >");

            document.writeln("<tr><td><b>Name</b></td><td width = 50>" + books.Pascal[i].Name+"</td></tr>");

            document.writeln("<tr><td><b>Price</b></td><td width = 50>" + books.Pascal[i].price +"</td></tr>");

            document.writeln("</table>");

            document.writeln("</td>");

         }

 

         for(i = 0;i<books.Scala.length;i++){

            document.writeln("<td>");

            document.writeln("<table border = '1' width = 100 >");

            document.writeln("<tr><td><b>Name</b></td><td width = 50>" + books.Scala[i].Name+"</td></tr>");

            document.writeln("<tr><td><b>Price</b></td><td width = 50>" + books.Scala[i].price+"</td></tr>");

            document.writeln("</table>");

            document.writeln("</td>");

         }

                                   

         document.writeln("</tr></table>");

 

      </script>

 

   </head>

           

   <body>

   </body>

           

</html>