Manipulating DOM with JavaScript

- [Instructor] So, we have now managed to get to the point…where we're gonna trigger our random learning montage.…And, in order to do that, we need to figure out a way…to invoke some JavaScript at this specific point…in the presentation, and then I want to display…this random collection of images.…And the way this is gonna work is you'll see a shape,…and I'm gonna pick a shape at random from our list…of four available shapes, and what I want to do…is keep showing them on the screen,…and I want this to accelerate.…So, I want it to be faster and faster and faster,…and whenever the shape is a circle,…I want to show my "yes" indication.…

When it's not a circle, I want to show my "no" indication.…So, we're gonna handle this in a couple of steps.…The first step is,…I wanna have a way to kind of cleanly invoke some JavaScript…when we get to this slide, and the easiest way I've found…in the past to do this is to actually encode…the JavaScript function name into my mark-up.…So let's go back to the editor.…Let's go back to our HTML.…