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.
