Training Guide: Programming in HTML5 with JavaScript and CSS3 Ebook

642

number primitive type

arithmetic operations, 68

described, 67

operator precedence, 68–69

special values supported, 68

number types, 67–69

numbers, validating in forms, 329

NVDA (Nonvisual Desktop Access) devices,

206–207

O

<object> element

creating nested browser context, 52

data attribute, 51

declare attribute, 322

described, 34, 51

embedding plug-in content, 50–52

form attribute, 51

height attribute, 51

name attribute, 51

<param> tag and, 52

passing parameters to objects, 52

type attribute, 51

usemap attribute, 51

width attribute, 51

object literals, 263–265

Object object

constructor() method, 265

described, 67

hasOwnProperty() method, 265

isPrototypeOf() method, 265

propertyIsEnumerable() method, 265

prototype property, 271–274

toLocalString() method, 265

toString() method, 265

valueOf() method, 265

object-oriented programming

JavaScript caveat, 263

naming variables, 72–73

<nav> element, 34, 208, 211

navigating DOM, 112–114

Navigation App template, 7

navigation class, 212

navigator.geolocation global variable, 540

nesting

elements, 179, 210

functions, 78

operations, 398–399

new keyword, 108, 269

no-quirks mode, 40

no value coalescing operators, 83–84

node package manager (npm), 342

Node.js platform

creating Hello World program, 342–344

creating Node.js module, 344–345

creating Node.js package, 345–354

creating RESTful web service, 366–368

described, 341

express framework, 354–363

installing, 342

lesson summary and review, 363, 391

practice exercises, 382–386, 390

Socket.IO library and, 424

nonbreaking space, 41–42

Nonvisual Desktop Access (NVDA) devices,

206–207

normalizing HTML documents, 217

<noscript> element, 34

not (!) logical operator, 70–71

:not pseudo class, 149

noupdate event, 610

npm (node package manager), 342

:nth-child(formula) pseudo class, 149

NuGet package-management system, 90, 95, 286

null primitive type, 67

Number() function, 78–79

Number object, 67

naming variables