I need help writing a simple html code to read a specific string from an external site, and if the string is there, it should display a custom string on my site using <iframe>. I don't know if it is possible, but read the [Background] for the reason why.
I'm currently working on a Radio Station's site, and I need it to read from the stream hosting site if the stream is active. If it is active, the script should activate a media player script (which I already created) and show that the stream is online, which would obviously be seen on my site. If the stream is down, it should display that the stream is down, and it should NOT show the media player.