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U
- -u file test operator
: Named Unary and File Test Operators
- -U switch, perl
: Switches
- -u switch, perl
: Switches
- <u> tags
: The <u> Tag
- uc function
: uc
- ucfirst function
: ucfirst
- UDP communications
: UDP: message passing
- $UID (see $< variable)
- uid (user ID) (see also $<)
-
- chown
- assumed
: Talking to yourself
- passwd file entry from
: getpwuid
- UID (user identification)
- File Permission Problems
- Set UID/GID Wrapper
- $uid file statistic
: stat
- <ul> tag
: <ul>
- <ul> tags
- Unordered, Ordered, and Definition Lists
- The <ul> Tag
- The style and class attributes
-
- umask function
: umask
- unary operators
- Calling conventions for unary operations
- Overloadable operations
- Number of Operands
- arithmetic
: Autoincrement and Autodecrement Ope...
- glob operator as
: Filename globbing operator
- ideographic
: Ideographic Unary Operators
- named
- Filename globbing operator
- Named Unary and File Test Operators
- new
- Data Type Wrapper Objects
- Object Creation Operator (new)
- Creating New Objects with Constructors
- Creating Arrays
- typeof
- Undefined
- The typeof Operator
- typeof operator
: Conversions to Objects
- typeof operators
: Core Language Changes
- void
- The void Operator
- JavaScript in URLs
- - (negation)
: Unary Negation (-)
- "Unauthorized" status code
- Status Codes
- Checking Hypertext (HTTP) Links
- unbuffered input
: getc
- uncgi library
- C Shell (UNIX Only)
- C/C++
- C/C++ decoding using uncgi
- undef (value)
: defined
- undef function
- undef
- Time Efficiency
- undefined
- scalars
: Scalar Values
- Boolean context and
: Boolean context
- undefined (value)
- Undefined
- Undefined Object Properties
- converting
- Conversions to Strings
- Conversions to Numbers
- Conversions to booleans
- Conversions to Objects
- underlining (nroff)
: UNIX Manual Page Gateway
- underscore (see _)
- underscoring
: The <u> Tag
- unequal (see equality operators; relational operators)
- unescape( )
: unescape( ) Function
- unescape()
- Reading Cookies
- unescape()
- uniform resource locators (see URLs)
- uninitialized
- variables
: Singularities
- uninstall( )
: ExtUtils::Install--Install Files fr...
- units attribute (<embed>)
: The units attribute
- UNIVERSAL class
: A Class Is Simply a Package
- Universal Coordinated Time (UTC)
: Date.UTC( ) Method
- universal resource identifiers (see URIs)
- UNIX (see environment variables)
- clients/servers
: UNIX-domain clients and servers
- manual pages
- UNIX Manual Page Gateway
-
- security bugs
: Security bugs
- sockets in
: Overview
- variables (see environment variables)
- Unix platforms
: Window.open() method
- browser background color
: Document Properties
- data tainting on
: Enabling Data Tainting in Navigator 3.0
- window size and
: Window Size on Unix Platforms
- unless statement (see if statement)
- unlink command
: CGI Side Includes
- unlink function
: unlink
- UNLINK method
: Other methods
- unlinking (see deleting)
- unnamed functions
: The Function() Constructor
- unordered lists
- Unordered, Ordered, and Definition Lists
- Unordered Lists
- The style and class attributes
-
-
- <ul>
- custom bullets
: Custom Bullets
- nesting
: Nested Unordered Lists
- unpack function
: unpack
- unsafe characters in URLs
: Handling reserved and unsafe characters
- unsafe operations
: Switches
- unshift function
: unshift
- untaint( )
: untaint( ) Function
- untaint()
- JavaScript Security
- The taint() and untaint() Functions
- untaint()
- untie function
- dbmclose
- untie
- Using Tied Variables
- until statement (see while loop)
- untyped variables
: Untyped Variables
- updating databases
: Updating a database
- Upgrade header
: Upgrade
- uploading files
- BasePlus.pm
-
- uptime command
: Server Redirection
- URI header
- Results Processing
- URI
- URIs (uniform resource identifiers)
: Uniform Resource Locators (URLs)
- URL object
- URL
- URL.hash
- URL.host
- URL.hostname
- URL.href
- URL.pathname
- URL.port
- URL.protocol
- URL.search
- URL property
- Miscellaneous Changes
- Document Properties
- Document.URL
- Properties
- URL protocol specifiers
- javascript:
- Exploring JavaScript
- JavaScript URL Execution
- mailto:
- Security Holes and Security Hobbles
-
- Security Hobbles in Navigator 3.0
- URLs
- Document.URL
-
- about:cache
: Security Holes and Security Hobbles
- extracting information from
: The Location Object
- javascript: protocol specifier
: JavaScript in URLs
- referral
: Document Properties
- URLs (uniform resource locators)
- URLs
- Referencing Documents: The URL
- Using relative URLs
- Uniform Resource Locators (URLs)
- <base> tag for
- The <base> Header Element
- Using <base>
- checking with socket library
: Checking Hypertext (HTTP) Links
- cookies for
: Cookies
- encoding for forms
- URL Encoding
- The <form> Tag
- extra path information
: Extra Path Information
- generating randomly
: A random URL generator
- http
- The http URL
- Sample http URLs
- imagemaps of
: Introduction to Imagemaps
- JavaScript
: JavaScript URLs
- Location object
: Location Object
- query
: The query URL
- randomly following
: Random Links
- returning by redirection
: Server Redirection
- as style property values
: URL property values
- urn attribute
- <link> tag
: Attributes
- <a> tag
: Attributes
- urn attribute (<a>)
: The urn attribute
- URNs (universal resource names)
: The urn attribute
- use command
: Employee database
- use declarations (see pragmas)
- use strict
: Frequently Ignored Advice
- use vars pragma
: AutoLoader--Load Functions Only on ...
- usemap attribute
- <img> tag
: Attributes
- <img>
- Image Maps
- The ismap and usemap attributes
-
- <object>
: The shapes and usemap attributes
- <object> tag
: Attributes
- Usenet, JavaScript newsgroups
: Discussion of JavaScript
- user
- CPU times
: times
- user CPU time
: Notes
- user efficiency
: User Efficiency
- user ID (see uid)
- user identification (UID)
- File Permission Problems
- Set UID/GID Wrapper
- user interface design
: User Interface Considerations
- User-Agent header
- Compatibility Through CGI Scripts
- User-Agent
- user-defined functions (see subroutines)
- userAgent property
- The Navigator, MimeType, and Plugin...
- Compatibility Through CGI Scripts
- Navigator.userAgent
- Properties
- username
- passwd file entry from
: getpwnam
- users (see forms)
- addresses of (see REMOTE_ADDR)
- authenticating
: User Authentication and Identification
- counting (see access counters)
- information from (see forms)
- input from (see input)
- interacting with
- Interact with the User
- Using the Java System Classes
- names of (see REMOTE_HOST)
- notifying of browser incompatibility
: Notifying Users of Old Browsers
- "uses" relationship
: Implementation (the "Uses" Relationship)
- UTC( )
- Methods
- Date.UTC( ) Method
- UTC()
: Date.UTC()
- utime function
: utime
- utmp file (see /etc/utmp file)
Symbols |
A |
B |
C |
D |
E |
F |
G |
H |
I |
J |
K |
L |
M |
N |
O |
P |
Q |
R |
S |
T |
U |
V |
W |
X |
Y |
Z