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CHAPTER 9 WRITING BETTER JAVASCRIPT$(window).bind("orientationchange resize", function() {setOrientation();});setInterval(setOrientation, 500);if (window.matchMedia) {var orientQuery = window.matchMedia('screen AND (orientation:landscape)')if (orientQuery.addListener) {orientQuery.addListener(setOrientation);}}function setupMediaQuery() {var screenQuery = window.matchMedia('screen AND (max-width: 500px)');deviceConfig.smallScreen = ko.observable(screenQuery.matches);if (screenQuery.addListener) {screenQuery.addListener(function(mq) {deviceConfig.smallScreen(mq.matches);});}deviceConfig.largeScreen = ko.computed(function() {return !deviceConfig.smallScreen();});setInterval(function() {deviceConfig.smallScreen(window.innerWidth
CHAPTER 9 WRITING BETTER JAVASCRIPTUnit Testing Client-Side CodeThe last topic that I want to cover in this book is unit testing. The tools for unit testing web apps are notas sophisticated as those for desktop or server-side code, but they are still pretty good, and you will findit easy to embrace client-side unit testing as part of your development cycle—if you are a believer in unittesting, anyway.As I said at the beginning of this chapter, I am not going to lecture you about the importance oftesting or tell you when you should begin testing your code. From my own experience, I resisted unittesting for a long time, in part because of the number of zealots that kept insisting that testing be done ata certain time and in a certain way. These days, I have come to see the value in unit testing, but whenand how unit testing is best applied varies from project to project and programmer to programmer. I ama big believer in writing better-quality code, but I have an intense dislike for rigid approaches that treatevery situation in the same way.With that in mind, I am going to briefly introduce you to the client-side testing tool that I like to useand then leave you to figure out how to apply it. Like all of the techniques in this book, you should pickwhat works for you, adapt everything to your own needs, and simply ignore anything that doesn’t solveany problems you are facing.Using QUnitI use QUnit, which is the tool developed by the jQuery team for their unit testing. It is simple andeffective and works well. You can get QUnit from http://github.com/jquery/qunit. To install QUnit,download the QUnit package and copy the qunit.js and qunit.css files from the qunit folder in thearchive to the Node.js content folder.QUnit tests are run from an HTML document, and there is a basic structure of elements required inthis document so that QUnit can display the test results. Listing 9-16 shows the template that I usedwhen testing AMD modules, which I have created as the file tests.html in the content directory.Listing 9-16. A QUnit Template Document for AMD Testing$(document).ready(function() {require(["utils-amd"], function(utils) {module("Utils-AMD Module");// tests for utils-amd module will go here});});AMD Tests253www.it-ebooks.info
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Contents at a Glance• About the A
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CHAPTER 1 GETTING READYWhat Do You
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CHAPTER 1 GETTING READYChapter 8:
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CHAPTER 1 GETTING READYThe server-
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CHAPTER 1 GETTING READYListing 1-3
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CHAPTER 1 GETTING READY{{each prop
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C H A P T E R 2Getting StartedIn th
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CHAPTER 2 GETTING STARTEDListing 2
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CHAPTER 2 GETTING STARTEDHandling
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CHAPTER 2 GETTING STARTED($0)Total
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CHAPTER 2 GETTING STARTED})}$('.la
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CHAPTER 2 GETTING STARTEDOnce agai
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CHAPTER 2 GETTING STARTED...$('spa
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CHAPTER 2 GETTING STARTEDFigure 2-
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CHAPTER 2 GETTING STARTEDSummaryAs
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CHAPTER 3 ADDING A VIEW MODELCreat
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CHAPTER 3 ADDING A VIEW MODEL$('#b
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CHAPTER 3 ADDING A VIEW MODEL};{id
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CHAPTER 3 ADDING A VIEW MODEL $()T
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CHAPTER 3 ADDING A VIEW MODEL});if
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C H A P T E R 4Using URL RoutingIn
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CHAPTER 4 USING URL ROUTINGwe requ
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CHAPTER 4 USING URL ROUTINGAdding
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CHAPTER 4 USING URL ROUTINGThe app
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CHAPTER 4 USING URL ROUTINGurl att
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CHAPTER 4 USING URL ROUTING• Not
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CHAPTER 4 USING URL ROUTING}"#sele
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C H A P T E R 5Creating Offline Web
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CHAPTER 5 CREATING OFFLINE WEB APP
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C H A P T E R 6Storing Data in the
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CHAPTER 6 STORING DATA IN THE BROW
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C H A P T E R 7Creating Responsive
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CHAPTER 7 CREATING RESPONSIVE WEB
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C H A P T E R 8Creating Mobile Web
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CHAPTER 8 CREATING MOBILE WEB APPS
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CHAPTER 8 CREATING MOBILE WEB APPS
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Page 269 and 270: • CONTENTS• Chapter 3: Adding a
Page 271 and 272: • CONTENTSUsing Persistence in th
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