3  
#  directive-frame-ancestors  ](https://w3c.github.io/webappsec-
csp/#directive-frame-ancestors)  
  
##  Browser compatibility

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JavaScript to view data.

##  See also

  * [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
  * [ ` X-Frame-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Frame-Options)
  * [ ` frame-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-src) CSP 

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