JavaScript JSON parse() Method
Last Updated :
02 Jun, 2023
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);
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Output:
GeeksforGeeks!
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);
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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);
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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