本文实例讲述了js实现防止被iframe的方法。分享给大家供大家参考。具体如下：

方法一：

<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 (window.location !== window.top.location) {

window.top.location = window.location;

}

})(this);

</script>

方法二：

<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? :)

this.top.location !== this.location && (this.top.location = this.location);

</script>

希望本文所述对大家的javascript程序设计有所帮助。