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JavaScript Debugger JavaScript Editor
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Index

L

label element, forms, 442–443

label object, HTMLLabelElement, 834

<label>

(X)HTML, 273

correspondence to label object, 834

forms, 442–443, 456

labels

break and continue statements and, 106–108

forms, 456

statements, 747

syntax, 747

language attribute, <script>, 7–8, 541, 721–722

language, browser detection, 548–549

languages, core

as component of object model, 221

core principles, 729–730

versions, 730–731

last-in first-out (LIFO), 165

lastIndex property, exec( ) method, 205

lastIndexOf( ) method, String object, 185

lastModified property, Document object, 388

Layer object, proprietary document objects, 479, 834–836

<layer>

correspondence to Layer object, 834

Netscape 4 and, 478–479

same-origin policy and, 681

layers[ ] collection, 397–398

left shift operator (<<), 83–84

legend object, HTMLLegendElement, 836–837

legend, forms, 443–444

<legend>, 444, 836

length property

Array object, 162–165

exec( ) method, 205

forms collection, 419

functions, 125–126, 745

String object, 54, 184

less than (<), 87, 145

less than or equal to (<=), 87, 145

Level 0 collections, DOM, 263

levels, DOM, 249–250

lexicographic order, 88, 743

li object, HTMLLIElement, 837

<li>, 837

libraries

DHTML, 480–489, 533

menus, 513

LIFO (last-in first-out), 165

link, HTMLLinkElement, 837–838

<link>, 285, 837

linked scripts, 15–16

links, 769–771

links[ ] collection, 391–392

lists, 62. See also arrays

literals

definition of, 24

syntax, 737–738

variable declaration and, 48

LiveConnect, 559

LiveScript, 558

local functions, 120–121

Local Intranet, security policies, 686

Local Machine, security policies, 686

local variables, 70, 117–119

Location object, browser objects, 366, 838–839

location property, Document object, 388–389

logical operators

conditional operator (?:), 89–90

list of, 89, 740–741

overview of, 34, 89

short-circuiting evaluation of logical expressions, 99

syntax, 740

lookahead (?!), 216

loops, 37–39

control, 38–39, 105–106

iteration with Enumerator object, 648

statements for, 97

syntax, 746–747

types of, 37–38

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