Add a Wraparound Effect for a Marquee with jQuery and Dreamweaver
Illustration by John Hersey

Add a Wraparound Effect for a Marquee with jQuery and Dreamweaver

with Chris Converse

Video: Duplicating and rearranging the first and last photos

Now to rearrange our photography, we are going to go into our photo lineup statements and make some changes. So let's scroll down in our script here. The first thing we are going to do is on the line where we take the marquee photos and append the image, which is where we actually are injecting image items into that particular div, we want to take off this style attribute that's inside up here. So let's select style=, select this all the way out, even including the concatenation of the variable photo position, and let's delete that from the statement here. Next, we want to take this next line here with the css, with the width setting on the outermost container, and delete that altogether.

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Watch the Online Video Course Add a Wraparound Effect for a Marquee with jQuery and Dreamweaver
41m 46s Intermediate May 18, 2012

Viewers: in countries Watching now:

Join Chris Converse as he teaches how to add a wraparound effect to your homepage marquee with Dreamweaver and a concise bit of jQuery code. The course covers positioning the photos, adjusting the navigation, activating the marquee, and making sure the marquee auto-plays. In a few short movies, designers can learn how to add this dynamic feature to their web sites.

For more information on creating the marquee, please watch Create an Interactive Homepage Marquee with jQuery and Dreamweaver.

Subject:
Web
Software:
Dreamweaver jQuery
Author:
Chris Converse

Duplicating and rearranging the first and last photos

Now to rearrange our photography, we are going to go into our photo lineup statements and make some changes. So let's scroll down in our script here. The first thing we are going to do is on the line where we take the marquee photos and append the image, which is where we actually are injecting image items into that particular div, we want to take off this style attribute that's inside up here. So let's select style=, select this all the way out, even including the concatenation of the variable photo position, and let's delete that from the statement here. Next, we want to take this next line here with the css, with the width setting on the outermost container, and delete that altogether.

So now that we those two changes in place, let's hit a few line returns. So now what we are going to do is write two statements that are going to actually clone the first photo and the last photo and then rearrange their position within the photo lineup. So let's start with the last photo first. Let's start with the dollar sign and parentheses, tick marks inside for a string literal. We are going to type .marquee_photos img, and then a colon, last-child.

Outside of the parentheses, we are going to type .clone, beginning and ending parentheses. That's going to duplicate that item. Then we are going to type .insertBefore beginning and ending parentheses, then a semicolon. Inside of the parentheses for insertBefore, two tick marks for strings literal, .marquee_photos img: first-child.

So what this is going to do is search for all of the images inside of marquee photos, find the very last item, duplicate it, and then insert the duplicate before the first image item in the photo marquee's div. Let's add another line. Now what we want to do is take the first photo and put it to the end, although that's no longer the first photo anymore because this statement here took the last photo and made it first. So now we need to target the second photo and clone that and make that the last item in the list.

So we are going to do that by starting with the dollar sign and parentheses, tick marks inside again for string literal, marquee_photos img: and then nth for nth child, so nth-child. Then we are going to do put beginning and ending parentheses and then the number 2. Outside of the main parentheses for our original statement, we are going to type .clone, beginning and ending parentheses, then .insertAfter, beginning and ending parentheses, semicolon.

Inside of the parentheses, two tick marks for a string literal. Then we are going to type .marquee_photos img: last-child. So now what this script is going to do is look for the second image inside of marquee photos, clone that, and then insert it after the very last image in our list. So this statement here on line 47 is going to give us our last item as the first, so now we are going to have five photos, and then this one is going to take the second one, duplicate it, and add it to the end, which is going to give us our sixth photo.

So the original four photos we are getting from the lineup statements up here are now getting two additional photos added and having them placed on either end of our photo lineup. So now that we've manipulated our photo lineup in a way that we looked that in the introduction video, in the next movie, we will work on positioning all of these six photos in that photo lineup.

Find answers to the most frequently asked questions about Add a Wraparound Effect for a Marquee with jQuery and Dreamweaver .


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Q: This course was updated in April, 2013. What changed?
A: Since the release of this course, Chrome conflicts with jQuery 1.6, and browsers run the autoplay when the windows is not in focus. To remedy these issues, the author has added a movie to Chapter 5 that will show you how to:
- Update the version of jQuery
- Detect the focus state of a web window
- Create a compound conditional JavaScript statement
 
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