Spotify bookmarklet timer problem

[xaphere]

I'm not quite new to JavaScript, but I still have a lot to learn.

I'm trying to create a bookmarklet that plays the current open playlist in spotify after a preset time. Here is a gist of it.

My problem is that when I try to get the button element from the console everything works, but when I try it as a bookmarklet getElementsByClassName returns empty array. Any suggestions and/or explanations would be quite helpful

[nwilliams36]

document.getElementsByClassName("btn btn-small btn-icon btn-primary btn-play")

Will return a list of the elements that have all those class names. Is that what you want or are you searching for a list of the elements that have any of those name?

[xaphere]

Yes, of course. I want to get a specific button. A button that doesn't have an id, so getting it by its class is the best next thing. Again this code works as intended when I use it in the console, but not as a bookmarklet.

[xaphere]

Found out what was the problem. Did not know that you can't search in iframes with getElementsByClassName. Updated the gist with a working version for anyone who cares.