How does IE prevent pop-up windows?

When browsing the web, the site will pop-up ads window, how to prevent these pop-up windows?

When you use IE browser to browse the site, if the site has a pop-up window, it will automatically block and send a sound prompt.

1. Temporarily allow pop-up windows

If you need to see a blocked pop-up window, you can temporarily allow pop-up windows. Click the Security bar and select "Allow pop-up windows temporarily" from the pop-up menu. When you visit the site again later, the pop-up window will still be blocked.

2. Always Allow pop-up windows

If the pop-up window is useful, you can set the pop-up window always. Click the security prompt, and in the menu, select Always Allow pop-up windows from this site. After setting, the pop-up window for this site will not be blocked.