The JSON.parse() method in JavaScript is used to parse a JSON string which is written in a JSON format and returns a JavaScript object.
Syntax:
JSON.parse( string, function )
Parameters: This method accepts two parameters as mentioned above and described below:
- string: It is a required parameter and it contains a string that is written in JSON format.
- function: It is an optional parameter and is used to transform results. The function called for each item.
Return Value: This method returns an object corresponding to the given JSON text.
Example 1: Below is an example of the JSON parse() Method.
JavaScript
let obj = JSON.parse('{"var1":"Geeks","var2":"forGeeks!"}');console.log(obj.var1 + " " + obj.var2); |
Output:
neveropen!
Example 2: This example parses a string and returns the JavaScript object.
Javascript
let obj = JSON.parse('{"var1":"Hello","var2":"Geeks!"}');console.log(obj.var1 + " " + obj.var2); |
Output
Hello Geeks!
Example 3: This example uses the reviver function to parse a string and return the JavaScript object.
Javascript
let text = '{ "var1":"Amanda", "gender":"male"}';let obj = JSON.parse(text, function (key, value) { if (value == "male") { return ("female"); } else { return value; }});console.log(obj.var1 + ", " + obj.gender); |
Output
Amanda, female
We have a complete list of Javascript JSON methods, to check those please go through Javascript JSON Complete Reference article.
Supported browsers:
- Chrome 4.0
- Firefox 3.5
- Opera 11.0
- Internet Explorer 8.0
- Safari 4.0
[…] JSON-encoded object with two properties “b” and “c”, and assigns it to the variable x. The JSON.parse() method is then used to parse the JSON-encoded string x into a JavaScript object, which is assigned to the […]