iframe and external website

Question

So I have this code:

and the l

Answer 1

The reason why external websites such as:

1. youtube.com
2. google.com
3. stackoverflow.com
4. etc.

are not loading in your frame, is because they are intentionally leveraging some sort of Frame Killer.

Example (uses jQuery):

Suggested reading:

• Framekiller (Wikipedia)
• Busting a tough FRAME killer