SoFunction
Updated on 2025-03-06

js implements a method to prevent being iframed

This article describes the method of implementing js to prevent being iframed. Share it for your reference. The details are as follows:

Method 1:

<script>
// Break out of an iframe, if someone shoves your site
// into one of those silly top-bar URL shortener things.
//
// Passing `this` and re-aliasing as `window` ensures
// that the window object hasn't been overwritten.
//
// Example:
//  var window = 'haha, punked!';
//
// Note: Probably unnecessary, but just for kicks.
(function(window) {
 if ( !== ) {
   = ;
 }
})(this);
</script>

Method 2:

<script>
// A more cryptic one-liner, to awe & impress.
//
// No need to protect `window` since `this` is
// immutable, and at the topmost level means
// `window` anyways. Here, we compare locations
// on the left side of the "&&" and execute the
// code in parenthesis if that condition is
// true (top location isn't iframe location).
//
// Otherwise, nothing happens. It's basically an
// if statement without wrapping curly brackets.
//
// Weird, I know. But pretty cool, right? :)
 !==  && ( = );
</script>

I hope this article will be helpful to everyone's JavaScript programming.