JavaScript JSON.parse() method

The JavaScript JSON.parse() takes a JSON string and transforms it into a JavaScript object.

Syntax

Parameters

text: The string to parse as JSON.

reviver: It is Optional. It prescribes how the value originally produced by parsing is transformed, before being returned.

Return value

An object corresponding to the given JSON text.

Browser Support

Chrome	Yes
Safari	4
Firefox	3.5
Opera	10.5

JavaScript JSON.parse() method Examples

Example 1

Let's see a simple example to parse an object.

<script>
//JavaScript to illustrate JSON.parse() method.
var json = '{ "firstName":"ASHU", "lastName":"BHATI", "studentCode":7 }';
var student = JSON.parse(json);
// expected output: ASHU BHATI
document.write(student.firstName + " " + student.lastName); 
</script>

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Output:

ASHU BHATI

Example 2

Let's see an example to parse a particular attribute.

<script>
//JavaScript to illustrate JSON.parse() method.
var json = '{ "firstName":"ASHU", "lastName":"BHATI", "studentCode":7 }';
var student = JSON.parse(json);
// expected output: 7
document.write(student.studentCode); 
</script>

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Output:

Example 3

Let's see an example to parse an array of attributes.

<script>
//JavaScript to illustrate JSON.parse() method.
var j = '["C++","JavaScript","Python","HTML"]';
var data = JSON.parse(j);
document.write(data);
 //expected output: C++,JavaScript,Python,HTML
</script>

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Output: