Book Image

ASP.NET jQuery Cookbook - Second Edition

By : Sonal Aneel Allana
Book Image

ASP.NET jQuery Cookbook - Second Edition

By: Sonal Aneel Allana

Overview of this book

jQuery is a lightweight JavaScript library that has changed the landscape of client scripting in web applications. Developed by John Resig in 2006, it has taken the web by storm because of its cross-browser compatibility and the ability to get more done with less code. It has gained popularity with ASP.NET developers and is now distributed with Visual Studio and the NuGet package manager. ASP.NET jQuery Cookbook explores the wide range of utilities that the jQuery library provides. It teaches you the nitty-gritty of plugging in these features in ASP.NET web applications. It covers every aspect of interfacing the library, right from downloading and including jQuery on web pages to selecting controls, handling events, and creating animations. This book also walks you through DOM traversal and manipulation in ASP.NET and then through visual effects and graphics in ASP.NET sites. It explores advanced features such as posting AJAX requests and writing plugins. It will provide you with all the information you need to use this library confidently with ASP.NET.
Table of Contents (15 chapters)
ASP.NET jQuery Cookbook Second Edition
About the Author
About the Reviewer

Previewing image uploads in MVC

In this example, let's create an MVC application that can preview images using a client script prior to uploading it on the server. Note that this recipe only covers the client script, and the server code for the upload is not dealt with. The following table shows a quick summary of the constructs used in this example:





jQuery selector

This selects an element based on its ID.

.attr("name") OR

.attr("name", "value")

jQuery method

This returns a string with the required attribute value of a matched element. It can also be used to set the attribute to the required value.


jQuery event

This is fired when the value of an element changes. It corresponds to the JavaScript change event.


Event handler provided by the FileReader interface

This defines the event handler for the loadend event. It is executed each time the event is completed.