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Creating Simple Objects:
JSON objects can be created with JavaScript. Let us see the various ways of
creating JSON objects using JavaScript −
- Creation
of an empty Object −
var JSONObj = {};
- Creation of a new Object −
var JSONObj = new Object();
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Creation of an object with attribute bookname with
value in string, attribute price with numeric value. Attribute
is accessed by using '.' Operator –
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var JSONObj = { "bookname ":"VB BLACK BOOK",
"price":500 };
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This is an example that shows creation of an object in
javascript using JSON, save the below code as json_object.htm –
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<html>
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<head>
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<title>Creating Object JSON with JavaScript</title>
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<script language = "javascript" >
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var JSONObj = { "name" : "tutorialspoint.com", "year" : 2005 };
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document.write("<h1>JSON
with JavaScript example</h1>");
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document.write("<br>");
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document.write("<h3>Website
Name = "+JSONObj.name+"</h3>");
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document.write("<h3>Year =
"+JSONObj.year+"</h3>");
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</script>
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</head>
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<body>
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</body>
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</html>
Now let's try to open Json Object using IE or any other javaScript enabled browser.
It produces the following result –
-
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>
Now let's try to
open Json Array Object using IE or any other javaScript enabled browser.
It produces the following result –
