Book Image

jQuery HOTSHOT

By : Dan Wellman
Book Image

jQuery HOTSHOT

By: Dan Wellman

Overview of this book

jQuery is used by millions of people to write JavaScript more easily and more quickly. It has become the standard tool for web developers and designers to add dynamic, interactive elements to their sites, smoothing out browser inconsistencies and reducing costly development time.jQuery Hotshot walks you step by step through 10 projects designed to familiarise you with the jQuery library and related technologies. Each project focuses on a particular subject or section of the API, but also looks at something related, like jQuery's official templates, or an HTML5 feature like localStorage. Build your knowledge of jQuery and related technologies.Learn a large swathe of the API, up to and including jQuery 1.9, by completing the ten individual projects covered in the book. Some of the projects that we'll work through over the course of this book include a drag-and-drop puzzle game, a browser extension, a multi-file drag-and-drop uploader, an infinite scroller, a sortable table, and a heat map. Learn which jQuery methods and techniques to use in which situations with jQuery Hotshots.
Table of Contents (18 chapters)
jQuery HOTSHOT
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Adding a jQuery UI progress indicator


In this task we'll add the elements and initialization code required by the jQuery UI Progressbar widget. The widget won't actually do anything yet because we won't be actually uploading anything until the next task, but we need to wire everything up ready.

Engage Thrusters

We'll add an initProgress() method to our widget's prototype to select the <div> elements that we added to the <table> element and convert them into Progressbar widgets. We can also add the method that will be used to update the Progressbars.

Directly after the handleFiles() method, add the following code:

Up.prototype.initProgress = function() {
  
    this.el.find("div.up-progress").each(function() {
        var el = $(this);

        if (!el.hasClass("ui-progressbar")) {
            el.progressbar();
        }
    });
}

Next, we'll need to call this method after new rows have been added to <table>. Add the following call to our new method right at the end of the handleFiles...