# [−][src]Constant actix_web::http::header::X_FRAME_OPTIONS

    pub const X_FRAME_OPTIONS: HeaderName

Indicates whether or not a browser should be allowed to render a page in a frame.

Sites can use this to avoid clickjacking attacks, by ensuring that their content is not embedded into other sites.

The added security is only provided if the user accessing the document is using a browser supporting `x-frame-options`.

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g. `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g. `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g. `str,u8` or `String,struct:Vec,test`)