How to Retrieve the URL of an iFrame

Retrieving the URL of an iFrame

In web development, iFrames are commonly utilized to display external content within a web page. While JavaScript allows for the modification of iFrame URLs, accessing the current URL of an iFrame poses security concerns.

One approach to obtaining the iFrame's URL is through the server side. By executing the code on the server, it is possible to read the iFrame's contents and extract the URL. This method requires access to the server-side code that manages the iFrame and the content it displays.

Another alternative is to utilize .NET's browser in browser controls. These controls can embed a web browser within a web page, providing the ability to execute JavaScript code within the embedded browser. This allows for accessing the iFrame's URL through JavaScript and passing it back to the host application.

In Firefox 3, the .src property of an iFrame always holds the initial URL loaded, regardless of user interactions. To obtain the URL after user navigation, the .documentWindow.location.href property can be used, provided the iFrame content is from the same domain as the containing page. However, cross-domain access will result in an error.

The above is the detailed content of How to Retrieve the URL of an iFrame. For more information, please follow other related articles on the PHP Chinese website!