Index

u object, HTMLElement, 901

<u>, 901

UI (user interface) events, DOM2, 336–337

ul object, UListElement, 901

<ul>, 901

UListElement, 901

unary operator, 81, 740

undefined data type, 58–60

undefined values, 113, 745

unescape( ) method, strings, 180

Unicode character set, 54–55

unshift( ) method, arrays, 166

untyped languages, 48

URL

URL property, Document object, 388

user interface (UI) events, DOM2, 336–337

userAgent property, Navigator object, 536, 538–539

user-defined objects, 133–134, 147–148, 754

userProfile object, 901–902

users, privacy protection, 682

UTC (Coordinated Universal Time), 174