22 results for "keywords:"isNaN""

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

Updated July 4, 2018 by @doowb

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

Updated December 24, 2020 by @ljharb

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

Updated August 22, 2021 by @stdlib-bot

Test if a value is NaN.

Updated August 23, 2021 by @stdlib-bot

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

Updated August 22, 2021 by @stdlib-bot

Widely supported version of Number.isFinite. Checks whether a value is a finite number.

Updated April 5, 2021 by @nikolaa

Widely supported version of Number.isNaN. Checks whether a value is a number and that it's not NaN.

Updated April 5, 2021 by @nikolaa

Collection of methods for check

Updated September 4, 2021 by @carlos-sweb

A very simple "typeof" detection

Updated June 6, 2021 by @tvardy

MDN polyfills

Updated January 8, 2022 by @outlineerik

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

Updated February 16, 2022 by @stdlib-bot

ES6-compliant shim for Number.isNaN - the global isNaN returns false positives.

Updated August 28, 2019 by @xotic750

a collection of javascript prototype extensions that make your javascript coding very easy and hanndy.

Updated September 12, 2021 by @developergovindgupta

MDN polyfills

Updated July 29, 2020 by @michal.jezierski

Validates if a value is NaN.

Updated February 20, 2015 by @kgryte

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

Updated October 6, 2016 by @jdalton

Validates if a value is a NaN primitive.

Updated April 2, 2015 by @kgryte

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

Updated November 20, 2018 by @ynote_hk

CheeseNaN allows you to truly test if a variable is NaN

Updated May 4, 2020 by @nugetchar

Computes for each array element whether an element is NaN.

Updated November 13, 2014 by @kgryte

Oh my type! Tiny and robust type checker.

Updated December 16, 2019 by @neporotovskiy

This is a JavaScript utility. It returns `true` if the value is a number or plain number string (not in scientific exponential notation or hexadecimal notation for instance).

Updated November 18, 2018 by @ynote_hk