Avast security
To enable JavaScript for all websites that you visit using Opera, refer to the instructions under Manage JavaScript in pages in the following article from Opera help: This means that all webpages with a web address beginning (such as allow cookies.
![avast security avast security](https://img.bidorbuy.co.za/image/upload/f_auto,q_auto:eco/user_images/869/2065869/210202131808_avast-premium-security-1-year-3-devices.png)
Mozilla Support ▸ JavaScript settings and preferences for interactive web pages.For more information about JavaScript settings in Mozilla Firefox, refer to the following article from Mozilla Support: If you have disabled JavaScript using a browser add-on that allows you to customize your JavaScript settings, you need to re-enable JavaScript using this add-on.
![avast security avast security](https://1.bp.blogspot.com/-I0go9nGEmJA/XVFC5bru_rI/AAAAAAAAEwE/LhZc7U8i7BUt2w7oFk_FozE73BeJ4wAAACLcBGAs/s320/fg.png)
JavaScript is enabled for all websites by default in Mozilla Firefox.
![avast security avast security](https://3.bp.blogspot.com/-kCHK-nfNG3o/Wti2TxPedLI/AAAAAAAAEEk/fdSKBgIdYGEacP0bmA8WhKlq6DHn19_VACLcBGAs/s1600/flashfile25.blogspot.png)
When you make a purchase via the Avast Store, you may be notified that you need to enable JavaScript and / or cookies in your web browser. Enabling JavaScript and cookies in your web browser