Possible Duplicate Detecting an ldquo invalid date rdquo Date instance in JavaScript Is there is a function IsDate in javascript

Try this var date new Date console log date instanceof Date amp amp isNaN date valueOf This should return true UPDATED Added isNaN check to handle the case commented by Julian H Lam

[javascript] Checking if a date is valid in javascript

Possible Duplicate:
Detecting an “invalid date” Date instance in JavaScript

Is there is a function IsDate() in javascript?

This question is related to javascript

The answer is

Try this:

var date = new Date();
console.log(date instanceof Date && !isNaN(date.valueOf()));

This should return true.

UPDATED: Added isNaN check to handle the case commented by Julian H. Lam

Source: Stackoverflow.com

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[javascript] Checking if a date is valid in javascript

The answer is

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