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    is-nan-x

    2.1.1 • Public • Published

    Travis status Dependency status devDependency status npm version jsDelivr hits bettercodehub score Coverage Status

    is-nan-x

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

    module.exports(value)boolean

    This method determines whether the passed value is NaN and its type is Number. It is a more robust version of the original, global isNaN().

    Kind: Exported function
    Returns: boolean - true if the given value is NaN and its type is Number; otherwise, false.

    Param Type Description
    value * The value to be tested for NaN.

    Example

    import numberIsNaN from 'is-nan-x';
     
    console.log(numberIsNaN(NaN)); // true
    console.log(numberIsNaN(Number.NaN)); // true
    console.log(numberIsNaN(0 / 0)); // true
     
    // e.g. these would have been true with global isNaN()
    console.log(numberIsNaN('NaN')); // false
    console.log(numberIsNaN(undefined)); // false
    console.log(numberIsNaN({}); // false
    console.log(numberIsNaN('blabla')); // false
     
    // These all return false
    console.log(numberIsNaN(true));
    console.log(numberIsNaN(null));
    console.log(numberIsNaN(37));
    console.log(numberIsNaN('37'));
    console.log(numberIsNaN('37.37'));
    console.log(numberIsNaN(''));
    console.log(numberIsNaN(' '));

    Install

    npm i is-nan-x

    DownloadsWeekly Downloads

    7,505

    Version

    2.1.1

    License

    MIT

    Unpacked Size

    31 kB

    Total Files

    11

    Last publish

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