JSON or JavaScript Object Notation is nothing but a text-based human-readable data storing and interchange. Douglas Crockford originally specified the this format.
The media for this is application/json and the extension is .json.
This is an easier-to-use alternative of XML.
The below example shown an student object with an array of 3 records:
{"students":[ {"Name":"Tim", "Age":"25"}, {"Name":"John", "Age":"30"}, {"Name":"Jane", "Age":"45"} ]}
Below example you can loop through:
<!DOCTYPE html> <html> <body> <h2>Example</h2> <p id="demo"></p> <script> var str = ''; var text = {"students":[{"Name":"Tim", "Age":"25"},{"Name":"John", "Age":"30"},{"Name":"Jane", "Age":"45"}]}; var obj = text.students; for ( var i in obj) { str +=obj[i].Name+ ":" + obj[i].Age+"<br>"; } document.getElementById("demo").innerHTML = str; </script> </body> </html>
So why JSON?
For AJAX JSON, is faster and easier.
JSON is quicker for reading and writing.

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