Index_N

N

name attribute, documents, 231, 262

names

accessing document elements by, 231

function, 129

variable, 47, 67 “69

namespace object, 843

NaN (not a number), 51 “52

navigation. See site navigation

Navigator object

browser detection, 536 “539

browser supporting, 134

javaEnabled( ) method, 559

methods , 845

mimeTypes[ ] property, 566 “567

overview of, 843

plugins[ ] collection, 543, 568

properties, 844 “845

Netscape

bug in Netscape 4, 170

debugger for, 707

document properties, Netscape 3, 236 “237

document properties, Netscape 4, 236 “237

document properties, Netscape 6 and 7, 240

DOM document trees and, 261

error handlers, 710 “712

event methods, 809 “810

event model. see event model, Netscape 4

event model compatibility, 299

events, 813 “814

full-screen windows , 383

IE versions corresponding to, 731

innerHTML property support, 291

JavaScript versions corresponding to, 672 “673, 730

language detection, 548

nonstandard event handlers, 303 “309

plugin detection, 543

positioned regions in Netscape 4, 478 “479

preference settings, 553 “554

Screen object detection, 547

signed scripts for security, 683 “684

simulating browser activities, 551

XML and, 629

netscape object, 852 “853

new keyword. See also constructors

building objects, 33, 61 “62, 135

creating Array object with, 93

defining functions, 121 “122

noBR object, proprietary document objects, 845 “846

<nobr>, 845

NodeIterator object, 288

nodes, DOM

copying, 267 “268

creating, 264 “265

deleting/replacing, 268 “269

inserting, 265 “267

modifying, 269 “271

properties, 256

relationship to (X)HTML documents, 253 “254

text node manipulation methods, 270

noFrames object, HTMLElement, 846

<noframes>, 846

non-capturing parentheses (?:), 216

noScript object, HTMLElement, 846 “847

<noscript>

correspondence to noScript object, 846

old browsers and, 723

pseudo-URLs and, 19

pull-down menus , 507

turning script off with, 11 “13

NOT (~), 83

not a number (NaN), 51 “52

not equal to (!=), 87

not equal to and not same type (!==), 87

notation, operator shorthand, 34 “35

null data type

conversion of, 734

defined, 29

overview of, 59

vs. undefined data type, 59 “60

Number object

methods, 847 “848

numeric data type, 52

properties, 183, 847

numeric constants, 733

numeric data type

converting, 66, 734

defined, 29

hexadecimal literals, 50

octal literals, 50

overview of, 49 “50

representation issues, 52 “53

special values, 51 “52