Book Image

MooTools 1.3 Cookbook

By : Jay L Johnston
Book Image

MooTools 1.3 Cookbook

By: Jay L Johnston

Overview of this book

MooTools is a JavaScript framework that abstracts the JavaScript language. JavaScript itself, complex in syntax, provides the tools to write a layer of content interaction for each different browser. MooTools abstracts those individual, browser-specific layers to allow cross-browser scripting in an easy-to-read and easy-to-remember syntax. Animation and interaction, once the domain of Flash, are being taken by storm by the MooTools JavaScript framework, which can cause size, shape, color, and opacity to transition smoothly. Discover how to use AJAX to bring data to today's web page users who demand interactivity without clunky page refreshes. When searching for animation and interactivity solutions that work, MooTools 1.3 Cookbook has individual, reusable code examples that get you running fast! MooTools 1.3 Cookbook readies programmers to animate, perform AJAX, and attach event listeners in a simple format where each section provides a clear and cross-browser compatible sketch of how to solve a problem, whether reading from beginning to finish or browsing directly to a particular recipe solution. MooTools 1.3 Cookbook provides instant solutions to MooTools problems – whatever you want to do with MooTools, this book will tell you how to do it. MooTools 1.3 Cookbook is presented in a progressive order that builds concepts and ideas, while simultaneously being a collection of powerful individual, standalone, recipe solutions.
Table of Contents (17 chapters)
MooTools 1.3 Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Viewing the members of an OBJECT using three different methods


The contents of an OBJECT differ from those of an ARRAY. Unlike an array, the keys are not incrementing integers. The values in an object have keys that may be strings or integers or even functions.

Getting ready

Create an object like a hash over which to iterate. Though objects may contain functions, only create string and integer elements for this recipe.

var my_object = {
'one':'one',
'two':2,
3:'Trinity'
};

How to do it...

The iteration of an OBJECT varies from that of an ARRAY in two ways. The first is that the Object.each() class method must be used to begin the iteration, as opposed to iterating using dot concatenation syntax directly as is possible with an ARRAY. Secondly, the bound function does not return the index parameter. It does return a copy of the object.

Object.each(
// 1st param is the object
my_object,
// 2nd param is the function to iterate with
function(obj_val,obj_key,obj_object) {
// the third param is...