<div>
Try this:<br />

<pre><code id="code-20-37306643-1">if ( Object.prototype.toString.call(d) === &quot;[object Date]&quot; ) {
  // it is a date
  if ( isNaN( d.getTime() ) ) {  // d.valueOf() could also work
    // date is not valid
  }
  else {
    // date is valid
  }
}
else {
  // not a date
}</code></pre>
</div>


Try this:


if ( Object.prototype.toString.call(d) === "[object Date]" ) {
  // it is a date
  if ( isNaN( d.getTime() ) ) {  // d.valueOf() could also work
    // date is not valid
  }
  else {
    // date is valid
  }
}
else {
  // not a date
}

<div>
your question has been answered by nap0leon correctly <br />
just to avoid further problems, format your date before sending it to SQL by sending it as YYYYMMDD<br />
without any date separators so you can avoid any single configuration problems between clients and servers
</div>


your question has been answered by nap0leon correctly
just to avoid further problems, format your date before sending it to SQL by sending it as YYYYMMDD
without any date separators so you can avoid any single configuration problems between clients and servers

<div>
I tried the isNan but it is not catching :- &quot;11/11/1111&quot; or &quot;99/99/9999&quot;.<br />
<br />
However in th code when I do (DateTime.Parse(&quot;txtDate.t<wbr />ext&quot;)<br />
then I get an error. Please help. <br />
May be is there a valid data range I can check to see if the date is in that range? <br />
<br />
Thanks
</div>


I tried the isNan but it is not catching :- "11/11/1111" or "99/99/9999".

However in th code when I do (DateTime.Parse("txtDate.text")
then I get an error. Please help.
May be is there a valid data range I can check to see if the date is in that range?

Thanks

<div>
<div class="content wysiwyg-content">
I have a datefield . how can i make sure the date entered is valid date? please help<br />
<br />
I already use ajaxmask, that allows only entry of numbers in the format 99/99/9999. on top of this I need to make sure this a valid date that SQL server will accept. 
</div>
</div>


I have a datefield . how can i make sure the date entered is valid date? please help

I already use ajaxmask, that allows only entry of numbers in the format 99/99/9999. on top of this I need to make sure this a valid date that SQL server will accept. 

validate date field in javascript or jquery

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ASP.NET

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.

JavaScript

Asynchronous JavaScript and XML (AJAX) is a group of interrelated Web development techniques used on the client-side to create asynchronous Web applications. With AJAX, web applications can send data to and retrieve from a server asynchronously (in the background) without interfering with the display and behavior of the existing page. HTML and CSS can be used in combination to mark up and style information. The Document Object Model (DOM) is accessed with JavaScript to dynamically display and allow interaction with the information presented.