Underscore.js _.isJSON() Method
The _.isJSON() method checks whether the given value is a valid JSON or not and returns the corresponding boolean value.
Syntax:
_.isJSON( value );
Parameters:
- value: Given value to be checked for JSON.
Return Value: This method returns a Boolean value(Returns true if the given value is valid JSON, else false).
Note: This will not work in normal JavaScript because it requires the underscore.js contrib library to be installed. Underscore.js contrib library can be installed using npm install underscore-contrib.
Example 1:
Javascript
var _ = require( 'underscore-contrib' );
console.log( "The Value is JSON : " +_.isJSON(
'{"GeeksforGeeks" : "A Computer Science portal for Geeks"}' ));
|
Output:
The Value is JSON : true
Example 2: For mapping false will be returned.
Javascript
var _ = require( 'underscore-contrib' );
console.log( "The Value is JSON : " +_.isJSON(
{GeeksforGeeks : "A Computer Science portal for Geeks" }));
|
Output:
The Value is JSON : false
Example 3: For other values, this method returns false.
Javascript
var _ = require( 'underscore-contrib' );
console.log( "The Value is JSON : " + _.isJSON([ "gfg" ]));
|
Output:
The Value is JSON : false
Last Updated :
30 Jul, 2020
Like Article
Save Article
Share your thoughts in the comments
Please Login to comment...