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JavaScript JSON

JavaScript JSON Object Methods with examples on javascript json, stringify() method, parse() method, javascript tutorial, features, introduction, examples, variables, javascript array, javascript map, javascript string etc.

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JavaScript JSON

The JavaScript JSON is an acronym of JavaScript Object Notation. It provides a format for storing and transporting data. It is a lightweight human readable collection of data that can be accessed in a logical manner.

Points to remember

  • It generates and stores the data from user input.
  • It can transport the data from the server to client, client to server, and server to server.
  • It can also build and verifying the data.

JSON Syntax

1. While working with .json file, the syntax will be like:

    {
                "First_Name" :  "value";
                 "Last_Name": "value ";
                   }

2. While working with JSON object in .js or .html file, the syntax will be like:

var varName ={
               "First_Name" :  "value";
                "Last_Name":  "value ";
                   }

JavaScript JSON Methods

Let's see the list of JavaScript JSON method with their description.

Methods Description
JSON.parse() This method takes a JSON string and transforms it into a JavaScript object.
JSON.stringify() This method converts a JavaScript value (JSON object) to a JSON string representation.

JavaScript JSON Example

Let's see an example to convert string in JSON format using parse() and stringify() method.

<script>
//JavaScript to illustrate JSON.parse() method.
var j = '{"Name":"Krishna","Email": "XYZ", "CN": "12345"}';
var data = JSON.parse(j);
document.write("Convert string in JSON format using parse() method<br>");
document.write(data.Email); //expected output: XYZ

//JavaScript to illustrate JSON.stringify() method.
var j = {Name:"Krishna",
Email: "XYZ", CN : 12345};
var data = JSON.stringify(j);
document.write("<br>Convert string in JSON format using stringify()  method<br>");
document.write(data); //expected output: {"Name":"Krishna","Email":"XYZ","CN":12345}
</script>
Test it Now

Output:

Convert string in JSON format using parse() method
XYZ
Convert string in JSON format using stringify() method
{"Name":"Krishna","Email":"XYZ","CN":12345}
Next TopicJavaScript JSON




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