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Generating the carousel

From: Create a Rotating Carousel with jQuery and Dreamweaver

Video: Generating the carousel

Now that we have the document ready finding all of the images and putting them into the carousel container, what we're going to do next is create our custom function to initialize the carousel. So, outside of the document ready, we're going to create our own function. We're going to call this function, space, createCarousel, beginning and ending parentheses, beginning and ending bracket. So createCarousel is a function name we're making up. And so what we're going to do first is initialize the carousel. So, we're going to type dollar sign, beginning and ending parentheses, two tick marks for a string literal, div, hash sign, carousel.

Generating the carousel

Now that we have the document ready finding all of the images and putting them into the carousel container, what we're going to do next is create our custom function to initialize the carousel. So, outside of the document ready, we're going to create our own function. We're going to call this function, space, createCarousel, beginning and ending parentheses, beginning and ending bracket. So createCarousel is a function name we're making up. And so what we're going to do first is initialize the carousel. So, we're going to type dollar sign, beginning and ending parentheses, two tick marks for a string literal, div, hash sign, carousel.

So, we're going to target the div with the carousel ID. Then we're going to type .roundabout, beginning and ending parentheses, then a semicolon. So, .roundabout is the name of the plug-in's function that actually creates the roundabout on the div with the carousel ID. Inside of the parentheses we're going to put two brackets and then split that open. And inside of here, we can define custom parameters for our roundabout.

So, the first thing we want to do is to find what the childSelector is. This is which items inside of the carousel ID are going to be turned into the roundabout and put along the circle to create the carousel. So, childSelector, colon, two tick marks for a string literal. We're going to type img. We're going to take all the image tags of the teapots that are being injected into the carousel ID and turn those into the roundabout. So after img, we're going to hit a comma. Let's hit a line return.

Next, we're going to define the tilt. This is again going to give you that sort of 3D angle effect, and we're going to set it to -4.5, then a comma. Next line, we're going to set minimum opacity. We're going to type a 1. This is going to be the items that are in the back, whether or not they're semi-transparent. In this case I don't want the teapots to be semi-transparent if they're in the back. Let's hit a return. Next, we're going to set minimum scale, how small do the items get when they're in the background? We're going to type .45, so they get 45% of their original size, comma, and then lastly, duration.

This is going to decide how long each item takes to go from wherever it currently is to being the item in the forefront. And we're going to type 1200 for 1.2 seconds. Now, before we can test this, we actually need to call this function so that the carousel gets generated. So, let's come up here and select the createCarousel name. Let's copy that to the clipboard, and let's come inside of the document ready. After we've gone through and injected all of the items into the carousel, let's hit paste to run the createCarousel function. So, once the document .ready gets done and all of the images are placed in, this will run the createCarousel function, which will come down here, look for the carousel ID item on that div, and then generate the carousel based on all of the images that are found inside of the div carousel ID.

So, at this point, let's choose File > Save All. Let's switch over to carousel.html and then choose File > Preview in Browser. Now, once this loads in a browser, we can see all of the images are being pulled out of the carousel data and being placed in the carousel ID and then being positioned around on the carousel based on the Roundabout plug-in. When I roll my cursor over to the top of these items, I see my cursor turns into a little pointer. Now I can click on the individual teapots and whatever on I click on will actually rotate around to be the first item in that carousel.

So now that the carousel is functioning properly, in the next movie we'll hook up the previous and next buttons that we positioned on the right and left to actually have them rotate the carousel as well.

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