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@stdlib/assert

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Standard assertion utilities.

stdlib.io

stdlib-js/assert

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{{alias}}( value ) Tests if a value is NaN. Parameters ---------- value: any Value to test. Returns ------- bool: boolean Boolean indicating whether value is NaN. Examples -------- > var bool = {{alias}}( NaN ) true > bool = {{alias}}( new Number( NaN ) ) true > bool = {{alias}}( 3.14 ) false > bool = {{alias}}( null ) false {{alias}}.isPrimitive( value ) Tests if a value is a NaN number primitive. Parameters ---------- value: any Value to test. Returns ------- bool: boolean Boolean indicating whether value is a NaN number primitive. Examples -------- > var bool = {{alias}}.isPrimitive( NaN ) true > bool = {{alias}}.isPrimitive( 3.14 ) false > bool = {{alias}}.isPrimitive( new Number( NaN ) ) false {{alias}}.isObject( value ) Tests if a value is a number object having a value of NaN. Parameters ---------- value: any Value to test. Returns ------- bool: boolean Boolean indicating whether value is a number object having a value of NaN. Examples -------- > var bool = {{alias}}.isObject( NaN ) false > bool = {{alias}}.isObject( new Number( NaN ) ) true See Also --------