How to check date is not zero in javascript?

Question

I want to check if date is not equal to 0000-00-00 00:00:00. How can I check it in javascript?

I checked with date !== null but it is not working.

Does this answer your question? [How to check if a variable is not null?](https://stackoverflow.com/questions/4361585/how-to-check-if-a-variable-is-not-null) — Yannick, Oct 13 '20 at 19:54

score 3 · Accepted Answer · answered Oct 13 '20 at 21:23

3

You can check "0000-00-00 00:00:00" with

Date.parse(date) // NaN

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/parse

answered Oct 13 '20 at 21:23

Julia

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score 2 · Answer 2 · answered Oct 13 '20 at 20:03

2

Having 0000-00-00 00:00:00 suggest that you not deal with Date object in JS but string comparing it in if statement should do:

if (data !== '0000-00-00 00:00:00') { ....

answered Oct 13 '20 at 20:03

bensiu

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score 1 · Answer 3 · answered Oct 13 '20 at 19:57

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Wouldn't you use date !=== 0000-00-00 00:00:00?

answered Oct 13 '20 at 19:57

samarmohan

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I used it but checking if there is better way to do that. – Trupti Oct 13 '20 at 20:03

Aib Syed · Answer 4 · 2020-10-13T21:09:22.750

Here is an example using ternary operators:

(date === '0000-00-00 00:00:00' ? exprIfTrue : exprIfFalse );

Also, below is an example using indexOf. - There are definitely a few ways to do this but not exactly sure what you're looking for with your use-case.

const zeroDate = '0000-00-00 00:00:00';
const realDate = '2020-10-13 00:04:05';

//check to see if indexOf '0000-00-00' exists in zeroDate string
// if true then log 'yes', if false then log 'no'
// this will log 'yes' since '0000-00-00' exists
(zeroDate.indexOf('0000-00-00') == 0  ? console.log('yes') : console.log('no') );


//same as above but for realDate string
//since there is no occurance of '0000-00-00' it will log 'no'
(realDate.indexOf('0000-00-00') == 0  ? console.log('yes') : console.log('no') );

How to check date is not zero in javascript?

4 Answers4