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42 packages found

is-nan

ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.

published 1.3.2 3 years ago

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is-number

Returns true if a number or string value is a finite number. Useful for regex matches, parsing, user input, etc.

published 7.0.0 6 years ago

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@alwatr/is-number

A simple utility to Check the value is number or can convert to a number, for example string ' 123 ' can be converted to 123.

published 1.0.5 21 hours ago

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@stdlib/math-base-assert-is-nan

Test if a double-precision floating-point numeric value is NaN.

published 0.2.1 2 months ago

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number.isnan

ES2015-compliant shim for Number.isNaN - the global isNaN returns false positives.

published 1.0.0 2 years ago

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@stdlib/assert-is-nan

Test if a value is NaN.

published 0.2.1 2 months ago

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is-string-a-number

This is a JavaScript utility. It returns `true` if the value is a string number written in fixed notation and in decimal base.

published 2.0.2 5 years ago

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@outlinerisk/mdn-polyfills

MDN polyfills

published 5.20.0 5 years ago

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@stdlib/math-base-assert-is-nanf

Test if a single-precision floating-point numeric value is NaN.

published 0.2.1 2 months ago

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ts-is-number

The ts-is-number a utility npm package that checks if a given input is a valid finite number or a string that can be converted to a valid finite number.

published 1.1.0 7 months ago

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fast-is-number

[![discordBadge](https://img.shields.io/badge/Chat-Click%20here-7289d9?style=for-the-badge&logo=discord)](https://discord.gg/ZVERh35) [![downloadsBadge](https://img.shields.io/npm/dt/fast-is-number?style=for-the-badge)](https://npmjs.com/fast-is-number) [

published 1.0.2 9 months ago

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intval

Returns sensible integer value of a given variable. Unlike parseInt it will never return NaN and you can set a default value to be returned in case the variable is undefined! Hence you can write even cleaner code. So if it's supposed to be an integer, cas

published 2.0.0 7 months ago

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pp-is

Collection of methods for check

published 1.2.1 19 days ago

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robb-clone

Simple type checker in JavaScript.

published 0.2.2 8 years ago

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typeanalyser

Provides type detection and analysis for ANY Javascript object (including custom types) in any environment, even where native operators falter.

published 2.0.6 8 months ago

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@stdlib/assert-is-nan-array

Test if a value is an array-like object containing only NaN values.

published 0.2.1 2 months ago

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lodash.isnan

The lodash method `_.isNaN` exported as a module.

published 3.0.2 8 years ago

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robb

Simple type checker in JavaScript.

published 0.2.1 12 years ago

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what-is

A very simple "typeof" detection

published 0.1.2-EOL 7 years ago

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validate.io-nan

Validates if a value is NaN.

published 1.0.3 9 years ago

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