Edit.php in WordPress (A JavaScript Syntax Error )

A JavaScript syntax error means there is a syntax or formatting error with your code. You should not receive this error using the default WordPress edit.php file unless you are using an outdated browser that doesn't supported the specific function. This problem is often caused by issues with plug-ins or custom hacks that change the way WordPress operates.

Modifications to the edit.php File

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  The edit.php file powers the WordPress post-editing template. WordPress cautions against making modifications to core files, because you could run into problems when updating WordPress. For example, the core file will be overwritten, causing you to lose your modifications. Additionally, modifications could open your site to security issues.
  
  

  
  

Browser Issues

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  The JavaScript syntax error in the edit.php file could be related to the user of an outdated browser, such as an older version of Internet Explorer or Mozilla Firefox. This is likely the case if you have not made modifications to the edit.php file. To fix the problem, update your Web browser to the latest version. WordPress is not guaranteed to work with older Web browsers.
  
  

  
  

Reverting to the Default Edit File

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  If you have made modifications to the edit.php file and are now receiving a JavaScript syntax error, consider reverting the edit.php file to its default state. This will be much easier than scanning the file line for line, analyzing code to find the problem. To revert to the default file, download the version of WordPress you are using from the WordPress repository. Extract the edit.php file and upload it to the /wp-admin directory on your server, replacing the modified edit.php file. Alternately, you can use the WordPress update console in the administration panel to upgrade to a newer version of WordPress (if one is available). This overwrites the custom edit.php file.
  
  

  
  

Finding Errors in the Template

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  If you absolutely must use a custom edit.php file for your WordPress installation and are receiving JavaScript syntax errors, you'll need to scan the template for errors manually or consult an expert to assist in finding the bad code.
  
  

  
  

Plug-in Problems

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  If you are using a plug-in that overrides functions of the edit.php file, the plug-in may be generating the JavaScript syntax errors or causing other problems. To troubleshoot, deactivate any plugins you are using that modify either the WordPress editing or post-creation screen.