How to Allow XMLHttpRequest to Access Local Files in Google Chrome?

Enable XMLHttpRequest Loading from Local Files in Google Chrome

When performing HTTP requests using XMLHttpRequest from a local file, browsers often encounter an Access-Control-Allow-Origin error. This occurs because requests from local files are restricted by security mechanisms.

To address this issue specifically in Google Chrome, users have resorted to using the --disable-web-security switch. However, this approach is highly discouraged due to security concerns.

Instead, Google Chrome offers a safer alternative with the --allow-file-access-from-files switch. This switch allows XMLHttpRequest to access files from other local files, effectively bypassing the security restriction.

How to Use the --allow-file-access-from-files Switch:

1. Close all running instances of Chrome.

2. Windows:

   • Open a command prompt.
   • Navigate to the Chrome installation directory.

   • Enter the following command:

     chrome.exe --allow-file-access-from-files

3. Mac:

   • Open a terminal window.
   • Navigate to the Applications directory.

   • Enter the following command:

     open /Applications/Google\ Chrome.app/ --args --allow-file-access-from-files

Additional Considerations:

• This feature is considered a "developer tool" and is not intended for everyday use.
• For security reasons, it is recommended to use this switch only during development and testing.
• Disable the switch by closing and reopening Chrome normally to restore default security settings.

The above is the detailed content of How to Allow XMLHttpRequest to Access Local Files in Google Chrome?. For more information, please follow other related articles on the PHP Chinese website!