Is it possible to add a script in an iframe?

Question

I was wondering if I can add / add javascript to an iframe that loads from an external webpage that is not on my website. is it possible to use jQuery or even simple javascript?

  <script>
  // i need some code here
  </script>
  <iframe src="http://www.xxx.xxx/" id="myiframe" />

Note: I do not want to replace the contents of the iframe, I just want to add a script

thank

Answer 1

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Answer 2

iframe , .

Answer 3

This is not possible due to security policy.

However, if you really want to do this and understand the security issues, you can try to find a solution, such as Ajax Cross domain