Pär Thernström

Earth People

WP JS Error Logger is a small plugin that I very quickly put together after wathcing <a href="https://twitter.com/dicode" rel="nofollow ugc">Diogo Antunes’</a> presentation <a href="https://speakerdeck.com/dicode/know-your-errors" rel="nofollow ugc">“Know your errors”</a> at <a href="http://2013.front-trends.com/" rel="nofollow ugc">Front Trends 2013</a> in Warsaw, Poland.
It’s a plugin that will log the JavaScript-errors that occur on the front-end of your public website. Errors are logged to a non-public custom post type inside WordPress.
The errors that are logged are the errors that call window.onerror. Please note that not all errors end up there. But… some do, and now you can catch them! 😉

WP JavaScript Error Logger

A plugin that will log JavaScript-errors that occurs on the front-end of your website. Errors are logged to a non-public custom post type.

Andrew Klimek

If the log is long, the latest lines are show at the top to avoid scrolling. Line numbers are shown for reference.
Logs over 5MB do not load until you confirm you are sure, or you can opt to delete the log and start afresh.
Only admins can view (or anyone you give the capability “manage_options”).
Debug Log only works if it’s enabled in wp-config.php. See https://codex.wordpress.org/Debugging_in_WordPress#WP_DEBUG_LOG
Recommended configuration:
<pre><code>define( 'WP_DEBUG', true );// just toggle this line to false to turn off
if ( WP_DEBUG ) {
 define( 'WP_DEBUG_LOG', true );
 define( 'WP_DEBUG_DISPLAY', false );
 @ini_set( 'display_errors', 0 );
}
</code></pre>

Debug Log

View and Delete the debug log from the Tools menu.  Extremely light and simple.

WP JavaScript Error Logger vs Debug Log