July 2025
Beginner
768 pages
16h 54m
English
Content preview from PHP, MySQL, & JavaScript All-In-One For Dummies, 2nd Edition
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 4
Reacting to Events with JavaScript and jQuery
IN THIS CHAPTER
Exploring web page events
Using events with JavaScript
Using jQuery and events
In the previous chapters in this book, you've seen how to incorporate both JavaScript and jQuery into your HTML5 code to help create a dynamic web application. The trick to using JavaScript and jQuery, though, is knowing when to use them. How are you supposed to know when your site visitor is hovering the mouse pointer over a product in your catalog to pop up more information? Fortunately, your web page is talking to you, telling you what your site visitors are doing at all times. All you need to do is listen to your web page and direct your JavaScript or jQuery code accordingly. That's exactly what this chapter shows you how to do.
What Are Events?
The world is full of events. There are birthday events, holiday events, school events, and all types of events competing for your time. Your world is loaded with events, and it's your job to determine which events to participate in (such as your birthday), and which ones to ignore (do we really need a special day to honor talking like a pirate?).
The same is true with your web application. ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.