how to use the isnan function from the underscore library in javascript

To use the isNaN function from the underscore library in JavaScript:

1. Install underscore using npm:

npm install underscore
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2. Import isNaN function from underscore:

const {isNaN} = require('underscore');
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3. Use isNaN function:

isNaN(NaN); // true
isNaN(5); // false
isNaN('hello'); // true
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The isNaN function checks if the given value is NaN or not. It returns true if the value is NaN, else false.