is-undefined

is-undefined

Check if a value is undefined or not.

Installation

$ npm i --save is-undefined

Example

const isUndefined = require("is-undefined");

console.log(isUndefined(undefined));
// => true

console.log(isUndefined(false));
// => false

console.log(isUndefined(null));
// => false

Documentation

isUndefined(input)

Checks if a value is undefined or not.

Params

• Anything input: The input value.

Return

• Boolean true, if the input is undefined, false otherwise.

How to contribute

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Where is this library used?

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License

MIT © Ionică Bizău