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O

O command (debugger) : Debugger Commands
-O file test operator : Named Unary and File Test Operators
-o file test operator : Named Unary and File Test Operators
/o modifier : Pattern-Matching Operators
object context : Conversions to Objects
<object> tags <object> Internet Explorer HTML Exclusives The <object> Tag The type attribute
object-oriented libraries : Why are so many of these CGI Perl l...
object-oriented programming (OOP) Brief Refresher on Object-Oriented ... Object-Oriented Scaling Tips Object-Oriented Programming
objects (Object objects) Objects Class Context and the Object Objects The JavaScript Object Hierarchy Conversions to Objects Conversions to and from Objects access operators : Array and Object Access Operators arrays as : Array/Object Dual Nature as associative arrays : Objects as Associative Arrays blessing : bless classes for (see classes) comparing : Equality (==) constructors (see constructors) converting (see converting) creation operator : Object Creation Operator (new) for/in statement : for...in functions as : Functions are objects hidden (see Hidden element) JavaObject object The JavaObject Object JavaScript Conversion of JavaObjects JavaScript (see JavaScript) methods (see methods) prototypes : Object Prototypes read-only : The assign() Method reference counting : Reference Counting in Navigator 3.0 special methods for : Special Object Methods testing for existence of : Event Handlers with statement and : with wrapper objects Data Type Wrapper Objects Wrapper Objects
obtaining Perl : How to Get Perl
oct function : oct
octal numbers Octal and Hexadecimal Literals Escape Sequences in String Literals String literals The rules of regular expression matching oct Converting Strings to Numbers specifying $/ as : Switches
ODBC (Open Database Connectivity) : Visual Basic
ODBM_File module AnyDBM_File--Provide Framework for ... ODBM_File--Tied Access to ODBM Files
off-screen images : Off-Screen Images and Caching
off/on (see Boolean data type)
offsets for m// successes : pos read function and : read seek function : seek (see also alignment)
$OFMT (see $# variable) a2p
$OFS (see $, variable)
<ol> tags <ol> Unordered, Ordered, and Definition Lists The <ol> Tag The style and class attributes
omitting HTML tags : Omitting Tags
on/off (see Boolean data type)
onAbort( ) Event handlers Image.onabort() Image Event Handlers
onAbort attribute (<img>) The name, onAbort, onError, and onL... JavaScript Event Handlers
onAnchorClick() : Live3D
onBlur( ) Event handlers Event handlers Event handlers Event handlers onBlur() and onFocus() Form Elements for Element object : Element.onblur() for Window object Window.onblur() The Window Object
onBlur attribute JavaScript Event Handlers Window.onblur()
onChange( ) Event handlers Event handlers Event handlers Event handlers for Element object : Element.onchange() for FileUpload element : FileUpload.onchange() for Password element : Password.onchange() for Select element : Select.onchange() for Text element : Text.onchange() for Textarea element : Textarea.onchange()
onChange attribute : JavaScript Event Handlers
onClick( ) Event Handlers Event handlers Event handlers Event handlers Event handlers Event handlers onClick() event handlers ignored Forms and Form Elements The Link Object for Button element : Button.onclick() for Checkbox element : Checkbox.onclick() for Element object : Element.onclick() for Link object : Link.onclick() for Radio element : Radio.onclick() for Reset element onClick() in reset button Reset.onclick() for Submit element : Submit.onclick()
onClick attribute Executable Content: JavaScript in a... Event Handlers in JavaScript <a> The onClick, onMouseOver, and OnMou... Regular buttons JavaScript Event Handlers <input> : Client-Side JavaScript Examples
one-liners : How to Do It
onError( ) Event handlers Event handlers The Window Object Opening and Closing Windows Image Event Handlers Image.onerror() for Window object : Window.onerror()
onError attribute The name, onAbort, onError, and onL... JavaScript Event Handlers
onFocus( ) Event handlers Event handlers Event handlers Event handlers onBlur() and onFocus() Form Elements The Window Object for Element object : Element.onfocus() for Window object : Window.onfocus()
onFocus attribute JavaScript Event Handlers Window.onfocus()
online help/documentation (see documentation)
onLoad( ) Event handlers Event handlers Event handlers Event Handlers Image Event Handlers Image.onload() for Window object onLoad() event handler called early Window.onload()
onLoad attribute The name, onAbort, onError, and onL... JavaScript Event Handlers Window.onload()
onMouseMove( ) : Live3D
onMouseOut( ) Event handlers Miscellaneous Changes The Link Object Ignore the Problem Link.onmouseout()
onMouseOut attribute The onClick, onMouseOver, and OnMou... The onMouseOver and OnMouseOut attr...
onMouseOver( ) Event handlers Status and defaultStatus The Status Line The Link Object Link.onmouseover()
onMouseOver attribute The onClick, onMouseOver, and OnMou... The onMouseOver and OnMouseOut attr... JavaScript Event Handlers
onReset( ) Event Handlers Forms and Form Elements Form.onreset() The Form Object
onReset attribute (<form>) The onsubmit and onreset attributes JavaScript Event Handlers
onSelect attribute JavaScript Event Handlers The onsubmit and onreset attributes JavaScript Event Handlers
onSubmit( ) Event Handlers The Form Object Form.onsubmit()
onUnload( ) Event handlers Event handlers Dialogs in onUnload() onLoad() and onUnload() Event Handlers for Window object : Window.onunload()
onUnload attribute JavaScript Event Handlers Window.onunload()
OOP (see object-oriented programming)
open command I try to open a file for writing so... Creating Dynamic Home Pages Digital Clock Pipes and the open Command -s option : Digital Clock
Open Database Connectivity (ODBC) : Visual Basic
open( ) FileHandle--Supply Object Methods f... Methods Methods The Window Object Object Model Differences Scope of event handlers Opening and Closing Windows The write() Method open Anonymous pipes for Document object : Document.open() fileno function and : fileno for Window object Window Size on Unix Platforms Window.open() method Multiple Windows and Explicit Windo... Window.open() $. and : close
open2( ) IPC::Open2--Open a Process for Both... Bidirectional communication
open3( ) IPC::Open3--Open a Process for Read... Bidirectional communication
opendir function opendir DirHandle--Supply Object Methods fo...
opener attribute : Other Window Programming Techniques
opener property The Window Object Multiple Windows and Explicit Windo... The Least-Common-Denominator Approach Defensive Coding Window.opener Properties
opening files FileCache module : FileCache--Keep More Files Open Tha... via low-level system call : sysopen sockets : socket
openlog( ) : Sys::Syslog--Perl Interface to UNIX...
open_connection subroutine : Socket Library
operands : Number of Operands
operating system : Perl in a Nutshell
operator mask : Safe--Create Safe Namespaces for Ev...
operators Operators Operators Operator Overview access : Array and Object Access Operators arithmetic Arithmetic and Mathematical Functions Arithmetic Operators associativity of Operators Operator Associativity autogeneration : Autogeneration bitwise : Bitwise Operators combined with assignment : Assignment with Operation comparison : Comparison Operators data types with : Type of Operands logical : Logical Operators overloading : overload--Overload Perl's Mathemati... Perl Operators File Test Operators precedence of Operators Operator Precedence string : String Operators types of : Number of Operands
optimizing performance (see performance)
Option element Form Elements Form Element Names and Values Option Option.defaultSelected Option.index Option.selected Option.text Option.value Option Object
<option> tags <option> The <select> Tag HTML syntax Menus and Scrolled Lists The <option> Tag Form Element Names and Values
Option() Forms and Form Elements The Select and Option objects
options, Perl command-line : Command Processing
OPTIONS method : Other methods
options[ ] property Properties Forms and Form Elements Removing Elements from an Array The Select and Option objects Select.options[]
OR operators Programming with Style ^ operator Bitwise Xor (^) Awk Traps | operator Bitwise Operators Bitwise Or (|) || operator C-style Logical (Short Circuit) Ope... Miscellaneous Differences Logical Or (||) Logical and, or, not, and xor
Oracle Cursor : A Gateway to an Oracle Database
Oracle databases A Gateway to an Oracle Database
oraperl Utilities and Applications A Gateway to an Oracle Database
ord function : ord
order (see precedence) of array elements, reversing : Array Methods of code execution : Execution of JavaScript Programs for/in statement looping : for...in function precedence : Functions Netscape 2.0 buttons and checkboxes : Backward radio and checkbox arrays of operations : Operator Precedence
ordered lists Unordered, Ordered, and Definition Lists Ordered Lists The style and class attributes <ol> nesting : Nested Ordered Lists
$ORS (see $\ variable)
osax (Open Scripting Architecture eXtended) AppleScript AppleScript
$OSNAME (see $^O variable)
$OS_ERROR (see $! variable)
output (see also filehandles) checking file descriptors for : select (ready file descriptors) from CGI programs How come my Perl CGI program runs f... Overview Complete (Non-Parsed) Headers embedding in other programs Executing CGI Programs Counting Days Until . . . to sockets : Socket I/O in Perl field separator (see $, variable) flushing : Flushing Generated Output inserting from programs : exec pipes : Pipes record separator (see $\ variable) selecting filehandles for : select (output filehandle) from SSI directives : Tailoring SSI Output test script : The test script output
$OUTPUT_AUTOFLUSH (see $| variable)
$OUTPUT_FIELD_SEPARATOR (see $, variable)
$OUTPUT_RECORD_SEPARATOR (see $\ variable)
overload module : overload--Overload Perl's Mathemati...
overloaded functions : Scalar and list context methods, LiveConnect and : Problems with overloaded methods run-time overloading : Run-time overloading
Overloaded( ) : Public functions
overriding base class methods : Overriding Base Class Methods functions : Overriding Built-in Functions MakeMaker methods : Overriding MakeMaker methods
overwriting array elements : Arrays in Navigator 2.0 objects : The assign() Method scripts : Overwriting the current script top-level variables : var
ownership, file : chown 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