number-isinteger-function-number-javascript.md

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Number.isInteger Function (Number) (JavaScript) | Microsoft Docs		01/18/2017	windows-client-threshold			devlang-javascript		language-reference	JavaScript TypeScript DHTML	54fcf68c-0067-4bad-af94-d7ff8c88914a	2	mikejo5000	mikejo	ghogen

Number.isInteger Function (Number) (JavaScript)

Returns a Boolean value that indicates whether a value is an integer.

Syntax

Number.isInteger(numValue)   

Return Value

true if the value is an integer, otherwise false.

Remarks

Requirements

[!INCLUDEjsv12]

Applies To: Number Object

Example

// Returns true  
Number.isInteger(100)  
Number.isInteger(-100)  
  
// Returns false  
Number.isInteger(Number.NaN)  
Number.isInteger(Infinity)  
Number.isInteger(100 / 3)  
Number.isInteger("100")