Title: JavaScript error while logging in (wp-login.php)
Last modified: August 20, 2016

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# JavaScript error while logging in (wp-login.php)

 *  Resolved [DanielPtr](https://wordpress.org/support/users/danielptr/)
 * (@danielptr)
 * [13 years, 11 months ago](https://wordpress.org/support/topic/javascript-error-while-logging-in-wp-loginphp/)
 * I’m trying to setting up a Dutch WordPress site. Today I’ve moved it to it’s 
   definite domain (that was hard to do), but since I get an error when I’m going
   to [http://houtskoolportret.nl/wp-login.php](http://houtskoolportret.nl/wp-login.php).
   The error refers to JavaScript, so seems. There’s nothing wrong as a result of
   the error, but it’s annoying and not as it should be.
 * In Google Chrome the error is: TypeError: Cannot read property style of null
   
   In Firefox: TypeError: obj.firstChild.firstChild is null In Internet Explorer:
   Cannot retrieve the value style: the object is null or not defined
 * On the Internet there’s much to find about this error, but I hadn’t written the
   JavaScript by myself, but it’s all WordPress JavaScript…
 * Old backups don’t solve the problem.
 * Could anyone help me? Thanks in advance!

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [Christine Rondeau](https://wordpress.org/support/users/crondeau/)
 * (@crondeau)
 * [13 years, 11 months ago](https://wordpress.org/support/topic/javascript-error-while-logging-in-wp-loginphp/#post-2861010)
 * I think that the error is coming from your custom logo plugin. When I look at
   the source code I see this:
 *     ```
       <script type="text/javascript">
           //<![CDATA[
           window.onload = function() {
       	try {
       		var obj = document.getElementById('login'); if (obj) { obj.firstChild.firstChild.style.background = 'url(http://www.houtskoolportret.nl/wp-content/plugins/custom-logo/houtskoollogo_beheer.png) no-repeat center'; }
       	}
       	catch (e) {
       		var message = (e.description) ? e.description : e;
       		alert(message);
       	}
           };
           </script>
       ```
   
 *  I think that’s the code that creating the error.
 *  Thread Starter [DanielPtr](https://wordpress.org/support/users/danielptr/)
 * (@danielptr)
 * [13 years, 11 months ago](https://wordpress.org/support/topic/javascript-error-while-logging-in-wp-loginphp/#post-2861088)
 * You are brilliant! That was indeed the cause of the error. I’ve installed another
   plugin for the logo, and no problems so far. Thanks!

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘JavaScript error while logging in (wp-login.php)’ is closed to new replies.

## Tags

 * [javascript](https://wordpress.org/support/topic-tag/javascript/)
 * [js](https://wordpress.org/support/topic-tag/js/)
 * [login](https://wordpress.org/support/topic-tag/login/)
 * [not defined](https://wordpress.org/support/topic-tag/not-defined/)
 * [NULL](https://wordpress.org/support/topic-tag/null/)
 * [style](https://wordpress.org/support/topic-tag/style/)
 * [value](https://wordpress.org/support/topic-tag/value/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 2 replies
 * 2 participants
 * Last reply from: [DanielPtr](https://wordpress.org/support/users/danielptr/)
 * Last activity: [13 years, 11 months ago](https://wordpress.org/support/topic/javascript-error-while-logging-in-wp-loginphp/#post-2861088)
 * Status: resolved

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