JavaScript FrameBuster Snippet

By  on  

Oftentimes you want to make sure your site isn't being IFRAME'd.  Sometimes it's for security reasons, other times it's so your site's content isn't being skimmed else, and other times it's...oh, who cares, you just want to do it.  Here's a short way to escape frames:

if (top.location != self.location) {
    top.location = self.location.href;
}

Uglify this and you get 63 characters of gold.  Simple, effective.

Recent Features

  • By
    5 Ways that CSS and JavaScript Interact That You May Not Know About

    CSS and JavaScript:  the lines seemingly get blurred by each browser release.  They have always done a very different job but in the end they are both front-end technologies so they need do need to work closely.  We have our .js files and our .css, but...

  • By
    LightFace:  Facebook Lightbox for MooTools

    One of the web components I've always loved has been Facebook's modal dialog.  This "lightbox" isn't like others:  no dark overlay, no obnoxious animating to size, and it doesn't try to do "too much."  With Facebook's dialog in mind, I've created LightFace:  a Facebook lightbox...

Incredible Demos

  • By
    Animated AJAX Record Deletion Using Dojo

    I'm a huge fan of WordPress' method of individual article deletion. You click the delete link, the menu item animates red, and the item disappears. Here's how to achieve that functionality with Dojo JavaScript. The PHP - Content & Header The following snippet goes at the...

  • By
    Duplicate the jQuery Homepage Tooltips

    The jQuery homepage has a pretty suave tooltip-like effect as seen below: The amount of jQuery required to duplicate this effect is next to nothing;  in fact, there's more CSS than there is jQuery code!  Let's explore how we can duplicate jQuery's tooltip effect. The HTML The overall...

Discussion

  1. Sorry bit of a jacascript noob here – this sounds great but how would one implement it? Where does it go?

    Again apologies for what must sound a simple question.

    • Eric

      Just toss it at the top of your javascript file :). Really anywhere in your JS this would work.

    • Just don’t put it inside a function unless that your intention. For example if for some reason you want to give your users a chance to make sure the page isn’t iframed by clicking a button then you put that code in a function say unIFrameMe() and then call that function when onclick the button.

      In general, you’ll want this code to be outside of a function, so it is run when the js is loaded.

      EMILIO!

  2. Thanks for the answers re the javascript.

    htaccess solutions might be better as they are not so easily bypassed:

    To blocks all sites (including your own) from iframing your pages:

    Header append X-FRAME-OPTIONS "DENY"
    

    or to block any external site from iframing your pages:

    Header append X-FRAME-OPTIONS "SAMEORIGIN"
    
  3. You can also only block some of your urls with the x-frame-options header. Here’s an apache solution

    Header always append X-Frame-Options SAMEORIGIN # Block any site from applying an iframe.

  4. Apparently I didn’t use `pre` tags.

    Header always append X-Frame-Options SAMEORIGIN # Block any site from applying an iframe.
    

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!