JavaScript Interview questions


Total available count: 22
Subject - JavaScript Frameworks
Subsubject - JavaScript

What is the use of isNaN function?

isNaN function returns true if the value is not a number otherwise it returns false.
Number.isNaN(value);
Example: -
Number.isNaN(10); // returns false as ‘10’ is a number
Number.isNaN(“a”); //returns true as “a” is not a number




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