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Data Type — The type of data contained in a variable or described by a literal.
Data-tainting — A mechanism for marking data in the client and controlling its use. An obsolete security work-around.
database object — An object that encapsulates the access to a back end database from Netscape Enterprise Server.
database.beginTransaction() — Marks the beginning of a transaction with the database.
database.commitTransaction() — Commits the changes made during this transaction.
database.connect() — Forms a connection to the database using the database type to select the correct one.
database.connected() — A flag, indicating the connection status for this database object.
database.cursor() — Creates a new cursor object with the SQL supplied in the argument.
database.disconnect() — Severs the current connection to the database.
database.execute() — Executes the SQL passed in the argument.
database.majorErrorCode() — Returns the error code for an error that may have happened in the database or the interface to it.
database.majorErrorMessage() — Returns the error message text for an error that may have happened in the database or the interface to it.
database.minorErrorCode() — Returns a supplementary error code for an error that may have happened in the database or the interface to it.
database.minorErrorMessage() — Returns a supplementary error message text for an error that may have happened in the database or the interface to it.
database.prototype — The prototype for the database object that can be used to extend the interface for all database objects.
database.rollbackTransaction() — Undoes any changes made in the current transaction.
database.SQLTable() — Creates an HTML table based on the results of the SQL query provided in the argument.
database.storedProc() — Creates a stored procedure object and runs the specified stored procedure in the database.
database.storedProcArgs() — Creates a prototype for a stored procedure and controls the argument passing.
database.toString() — Returns a string equivalent of the database object.
dataTransfer object — An object used during drag and drop operations to provide access to data being dragged.
dataTransfer.clearData() — Clears any data currently in the transfer object.
dataTransfer.dropEffect — Set the effect when the element is dropped.
dataTransfer.effectAllowed — Indicates whether the drop effect is allowed or not.
dataTransfer.getData() — Gets the data from the transfer object.
dataTransfer.setData() — Sets the data in the transfer object.
Date and time — There is a variety of ways to work with dates and times.
Date constant — A constant date value.
Date from time — A date and time algorithm defined by ECMAScript.
Date number — A date and time algorithm defined by ECMAScript.
Date object — An object of the class "Date".
Date() — A Date object constructor.
Date() — A function that returns the current date.
Date.Class — Internal property that returns an object class.
Date.constructor — A reference to a constructor object.
Date.getDate() — Returns the day number within a month for a date/time.
Date.getDay() — Returns the weekday number for a date/time.
Date.getFullYear() — Returns the full year for a date/time.
Date.getHours() — Returns the hour value for a date/time.
Date.getMilliseconds() — Returns the milliseconds value of a date/time.
Date.getMinutes() — Returns the minutes value of a date/time.
Date.getMonth() — Returns the month value of a date/time.
Date.getSeconds() — Returns the seconds value of a date/time.
Date.getTime() — Returns the time value of a date/time.
Date.getTimezoneOffset() — Returns the time zone offset for the date/time.
Date.getUTCDate() — Returns the UTC day of month value for a date/time.
Date.getUTCDay() — Returns the UTC weekday number for a date/time.
Date.getUTCFullYear() — Returns the UTC full year value for a date/time.
Date.getUTCHours() — Returns the UTC hours value for a date/time.
Date.getUTCMilliseconds() — Return the UTC milliseconds for a date/time.
Date.getUTCMinutes() — Returns the UTC minutes value for a date/time.
Date.getUTCMonth() — Returns the UTC month number for a date/time.
Date.getUTCSeconds() — Returns the UTC seconds value for a date/time.
Date.getVarDate() — A special date format for use with ActiveX objects.
Date.getYear() — Returns a 2 digit non-Y2K compliant year for a date/time.
Date.length — The length of a date object.
Date.parse() — A class based factory method for converting strings to Date objects.
Date.prototype — The prototype for the Date object that can be used to extend the interface for all Date objects.
Date.setDate() — Sets the day number within a month of the time object.
Date.setFullYear() — Sets the full year value of a date/time object.
Date.setHours() — Sets the hours of a date/time object.
Date.setMilliseconds() — Sets the milliseconds value of the time object.
Date.setMinutes() — Sets the minutes of the time object.
Date.setMonth() — Sets the month number of the time object.
Date.setSeconds() — Sets the seconds value of the time object.
Date.setTime() — Sets the time value of the time object.
Date.setUTCDate() — Sets the UTC day within a month of the time object.
Date.setUTCFullYear() — Sets the UTC full year value of the time object.
Date.setUTCHours() — Sets the UTC hours of the time object.
Date.setUTCMilliseconds() — Set the UTC milliseconds value of the time object.
Date.setUTCMinutes() — Sets the UTC minutes of the time object.
Date.setUTCMonth() — Sets the UTC month number of the time object.
Date.setUTCSeconds() — Sets the UTC seconds value of the time object.
Date.setYear() — Sets a non-Y2K compliant year number of the time object.
Date.toDateString() — The value of the Date object is presented just as a date.
Date.toGMTString() — Converts a Date object to a string containing a GMT time.
Date.toLocaleDateString() — The value of the Date object is presented just as a date taking the present locale into consideration.
Date.toLocaleString() — Converts a Date object to a string with the locale specific time.
Date.toLocaleTimeString() — The value of the Date object is presented just as a time taking the present locale into consideration.
Date.toSource() — Outputs a date formatted as a Date literal contained in a string.
Date.toString() — Return a string primitive version of an object.
Date.toTimeString() — The value of the Date object is presented just as a time.
Date.toUTCString() — Converts a Date object to a string with UTC time.
Date.UTC() — A class based factory method for converting numeric values to Date objects.
Date.valueOf() — Returns a number that is the date and time value for the receiving Date object.
Day from year — A date and time algorithm defined by ECMAScript.
Day number — A date and time algorithm.
Day within year — A date and time algorithm defined by ECMAScript.
Daylight savings time adjustment — An adjustment to the local time value.
Days in year — A date and time algorithm.
DbPool object — An object of the class "DbPool" which provides a means of pooling connections to multiple databases.
DbPool() — Used for creating new pools of connections to a database.
DbPool.connect() — Connect the DbPool object to a database.
DbPool.connected() — A flag that indicates the connection status for this DbPool object.
DbPool.connection() — Requests a connection object from the pool of available connections.
DbPool.disconnect() — Disconnect from the database discarding all connections in the pool in the process.
DbPool.majorErrorCode() — Returns an error code value for an error that happened in the database or the interface to it.
DbPool.majorErrorMessage() — Returns an error message text for an error that happened in the database or the interface to it.
DbPool.minorErrorCode() — Returns a supplementary error code value for an error that happened in the database or the interface to it.
DbPool.minorErrorMessage() — Returns a supplementary error message text for an error that happened in the database or the interface to it.
DbPool.prototype — The prototype for the DbPool object that can be used to extend the interface for all DbPool objects.
DbPool.storedProcArgs() — Creates a prototype for a stored procedure and controls the argument passing.
DbPool.toString() — Returns a string primitive version of the DbPool object.
DD object — An object that represents the <DD> HTML tag.
DD.noWrap — A switch to control text wrapping within the <DD> block.
Debugger — A tool to help with the location of bugs in your script.
debugger — Reserved for future language enhancements.
Debugging - client side — How to debug faulty client side scripts.
Debugging - server side — How to debug faulty stand-alone scripts.
Decimal point (.) — A delimiter that marks the beginning of the fractional part of a floating point value.
Decimal value — A numeric value based on a radix of 10.
Declaration — Declares the attributes of an identifier.
Declared function — A function can be declared in the script source text.
decodeURI() — This ECMA defined function can be used to decode an entire URI value that was encoded with the encodeURI() function.
decodeURIComponent() — This ECMA defined function can be used to decode a URI component value that was encoded with the encodeURIComponent() function.
Decrement value (--) — Pre or post decrementing operator.
Deep copying — Making a duplicate of objects, property by property.
default: — A target label for use with the switch statement as a catch-all for any unmatched cases.
defaultStatus — The default status text of the window.
DefaultValue() — Internal private function.
Defensive coding — Allowing your scripts to be downwards compatible and coding for portability and robustness.
Definition — Define the storage for an identifier.
DEL object — An object that represents a <DEL> HTML tag within the document.
DEL.cite — A URL that references a document that describes why the item was deleted.
DEL.dateTime — The date and time that the deletion occurred.
delete — Property deletion operator.
Delete() — Internal private function.
Deprecated functionality — Some language features are to be discontinued in later versions of the language.
Desktop JavaScript — Control of desktop automation with JavaScript.
detachEvent() — A means of detaching events from windows and documents that were previously attached with the attachEvent() method.
Determining the object type — To determine what kind of object type you have, this function may be useful.
Developing JavaScript source code — Techniques for easing developer headaches.
DFN object — An object representing the HTML content delimited by the <DFN> HTML tags.
DHTML — Dynamic HTML controlled by JavaScript. A fourth generation browser technology for dynamically altering the document that describes a web page.
DHTML Behavior — A mechanism for enhancing the dynamic capabilities of HTML.
Diagnostic message — A message from the interpreter warning you about a script error.
Dialog boxes — User communication is effected by means of several different dialog boxes.
Dialog object — This is the parent object of a frame within a modal dialog window.
dialogArguments — The arguments passed to a modal dialog window.
dialogHeight — The height of a modal or modeless dialog window.
dialogLeft — The offset to the left edge of a modal or modeless dialog window. In IE 4, the default measure is the em, in IE 5 it is the pixel.
dialogTop — The offset to the top edge of a modal or modeless dialog window. In IE 4, then default measure is the em, in IE 5 it is the pixel.
dialogWidth — The width of a modal or modeless dialog window. In IE 4, the default measure is the em, in IE 5 it is the pixel.
Dictionary object — A name-value collection object created by the Active X facilities.
Dictionary.Add() — Add a new item to the Dictionary.
Dictionary.Count — Return a count of the number of items in the dictionary.
Dictionary.Exists() — Returns a flag indicating whether a key has an item associated with it in the Dictionary.
Dictionary.Item() — Returns a reference to the Item container for a key.
Dictionary.Items() — Returns an array containing all Items in the dictionary.
Dictionary.Key() — Returns a reference to the named key container.
Dictionary.Keys() — Return a collection of all the keys currently defined in the Dictionary.
Dictionary.Remove() — Remove a key name and its item value from the Dictionary.
Dictionary.RemoveAll() — Remove all key names and item values from the Dictionary.
Digit — A decimal numeric character.
DIR object — A somewhat deprecated object that is now superseded by the <UL> HTML tag and its object representation. This object represents the contents of a <DIR> HTML tag.
DIR.compact — An attribute that controls the display of <DIR> items and the amount of space they require on the screen.
disableExternalCapture() — Part of the Netscape 4 event propagation complex.
DIV object — An object that represents a <DIV> block level element.
DIV.align — The alignment for content within a <DIV> block.
Divide (/) — Divide one operand by another.
Divide then assign (/=) — Divide one operand by another and put the result in the first.
DL object — An object that represents a definition list defined by a <DL> HTML tag.
DL.compact — An attribute that controls the display of <DD> and <DT> items and the amount of space they require on the screen.
do ... while( ... ) — A variant of the while iterator that checks the condition after execution.
Doctype object — An object that represents the document type DTD.
Doctype.entities[] — A named node map containing all the general entities within the DTD.
Doctype.name — The name of the DTD that the Doctype encapsulates.
Doctype.notations[] — A named node map containing the notations declared in the DTD encapsulated by the Doctype object.
Document — An organized collection of objects that represent a document.
document — The document within the current window.
Document component — A component object within a document object model.
Document event handlers — A property containing a reference to an event handler property.
Document object — An object that represents the document currently loaded into the window. This exposes the contents of the HTML document through a variety of collections and properties.
Document.<form_name> — The name of a form if the document contains a <FORM> tag.
Document.activeElement — The input element that currently has input (keyboard and mouse) focus.
Document.alinkColor — The color of a link on the page while it is being activated.
Document.all[] — A collection object containing references to every object in the MSIE DOM.
Document.anchors[] — An array of all the anchor objects in the document.
Document.applets[] — An array containing a list of all the applets in the document.
Document.attachEvent() — A means of attaching events to windows and documents.
Document.background — DOM originally intended this to be the URL of a background image for the current document.
Document.bgColor — The background color of the document.
Document.body — The contents of the <BODY> tag.
Document.captureEvents() — Part of the Netscape 4 event propagation complex.
Document.characterset — A Netscape 6.0 equivalent of the Document.charset property.
Document.charset — The character set currently being used.
Document.classes[] — Part of the JSS style control model supported only by Netscape .
Document.clear() — A deprecated method that clears the document.
Document.close() — Close a document body after you have finished writing to it.
Document.contextual() — Returns a style object that represents the contextual style for the receiver.
Document.cookie — Access to a cookie for the current document.
Document.createAttribute() — Creates an Attribute object that can then set on an Element with the setAttributeNode() method.
Document.createCDATASection() — Creates a new CDATASection object whose value is the string passed as an argument.
Document.createComment() — Creates a new comment node object containing the data passed in the string argument.
Document.createDocumentFragment() — Creates a new and empty document fragment.
Document.createElement() — A method to create a new element within a document.
Document.createEntityReference() — A new EntityReference object is created. It may acquire the same child list as the entity it refers to.
Document.createProcessingInstruction() — A new processing instruction node is created. Its name and content are specified by the arguments.
Document.createStyleSheet() — A style sheet factory method.
Document.createTextNode() — A means of constructing a new textNode object.
Document.defaultCharset — The default character set of the document.
Document.designMode — Part of a page authoring control system built into the MSIE browser.
Document.detachEvent() — A means of detaching events from windows and documents that were previously attached with the attachEvent() method.
Document.doctype — The current document type of the document.
Document.documentElement — An HTML element that represents the document.
Document.domain — A means of allowing web servers that trust one another to allow normally insecure access from one another's documents.
Document.elementFromPoint() — Determine which element is under a particular x, y location.
Document.embeds[] — An array of all the <EMBED> tag objects within the document.
Document.execCommand() — Part of an MSIE special document command handling mechanism. A method for executing commands.
Document.expando — A means of locking objects to prevent new properties being added.
Document.fgColor — The foreground color for text in the current document.
Document.fileCreatedDate — The date that the document file was created.
Document.fileModifiedDate — The date that the document file was last modified.
Document.fileSize — The size in bytes of the file that was received by the browser.
Document.forms[] — An array containing a list of all the forms in the document.
Document.frames[] — An array containing references to all the frame objects within a document.
Document.getElementById() — An accessor method for retrieving objects from within the DOM hierarchy specifically according to their ID value.
Document.getElementsByName() — An accessor method for retrieving objects from within the DOM hierarchy specifically according to their NAME value.
Document.getElementsByTagName() — A node list is returned that contains references to all the child elements having the specified tag name.
Document.getSelection() — Return the currently selected text string.
Document.handleEvent() — Pass an event to the appropriate handler for this object.
Document.height — The height of the document.
Document.ids[] — Part of the JSS model supported only by Netscape 4.
Document.images[] — An array containing a list of all the images in the document.
Document.implementation — A reference to a DOM Implementation object.
Document.lastModified — The modification date of the document is stored in this property.
Document.layers[] — An array containing a list of layers in the document.
Document.linkColor — The color of links that have not yet been visited.
Document.links[] — An array of links in the document.
Document.location — This is another name for the Document.URL property.
Document.open() — Open a document body ready for writing.
Document.parentWindow — The window object that contains the document.
Document.plugins[] — Another (confusing) name for the document.embeds property and NOT the navigator.plugins property.
Document.protocol — The protocol that was used when the document was loaded.
Document.queryCommandEnabled() — Part of an MSIE special document command handling mechanism. Indicates if a command is available for a document or text range.
Document.queryCommandIndeterm() — Part of an MSIE special document command handling mechanism. Indicates whether the command is in the indeterminate state.
Document.queryCommandState() — Part of an MSIE special document command handling mechanism. The current state of a command for the document or text range.
Document.queryCommandSupported() — Part of an MSIE special document command handling mechanism. Indicates whether the document or text range supports a command.
Document.queryCommandText() — Part of an MSIE special document command handling mechanism.
Document.queryCommandValue() — Part of an MSIE special document command handling mechanism. The value of a command for a document or text range.
Document.readyState — The current downloading status disposition of the document.
Document.recalc() — A special MSIE supported method that sends a recalculation event to a document.
Document.referrer — The URL of the document that was displayed when the user clicked on a link to request this document.
Document.releaseEvents() — An alias for the window.releaseEvents() method.
Document.routeEvent() — Part of the Netscape event propagation complex.
Document.scripts[] — An array of all the <SCRIPT> blocks in a document.
Document.selection — The selected text within the object.
Document.styleSheets[] — An array containing a list of style sheets in an MSIE document.
Document.tags[] — Part of the JSS model supported only by Netscape 4.
Document.title — The title text for the document.
Document.uniqueID — A unique ID value for this document.
Document.URL — This is the actual URL that was loaded for the document.
Document.vlinkColor — The color of a visited link in the current document.
Document.width — The width of the document.
Document.write() — A method for writing HTML into the document body.
Document.writeln() — A method for writing HTML into the document body.
DocumentEvent — An interface that extends the Document object to support a DOM compliant event structure.
DocumentEvent.createEvent() — A method to create a new event object ready to be dispatched to an EventTarget.
DocumentFragment object — The DOM specification calls this a lightweight or minimal document object. It can be used as a temporary store for a part of the document hierarchy.
DocumentStyle object — Added at DOM level 2 to support document related stylesheets.
DocumentType object — This is implemented in MSIE as a Doctype object.
DOM — A standardized model of a document built with objects.
DOM - Level 0 — The initial collation of document objects and properties from the de-facto HTML & JavaScript implementations.
DOM - Level 1 — A standardized model of a document built with objects.
DOM - Level 2 — A standardized model of a document built with objects.
DOM - Level 3 — An improved model of the document object structure.
DOM Events — A new modular part of the DOM standard introduced at level 2 and implemented in Netscape 6.
Domain error — An error in computation that would normally crash a compiled program.
DOMImplementation object — MSIE implements this class as the Implementation object.
DontDelete — An internal property attribute that prevents a property from being deleted.
DontEnumerate — An internal property attribute that prevents a property from being enumerated.
double — Reserved for future language enhancements.
Double-precision — A type of number value.
Drive object — A special JScript object to represent a disk drive.
Drive.AvailableSpace — The amount of free space on the drive.
Drive.DriveLetter — The name of the drive.
Drive.DriveType — The kind of disk media in the drive.
Drive.FileSystem — The kind of file system on the drive.
Drive.FreeSpace — The amount of free space left on the drive.
Drive.IsReady — Whether the drive is ready to be used.
Drive.Path — The path for the specified drive.
Drive.RootFolder — A folder object that represents the root folder for the drive.
Drive.SerialNumber — The serial number of the drive.
Drive.ShareName — If the drive is shared, then this is its shared name.
Drive.TotalSize — The total space available on the disk if it were empty.
Drive.VolumeName — Access to the volume name of the drive.
Drives object — A collection of drives belonging to a file system.
DropShadow() — A visual filter for creating drop shadows.
DT object — An object that represents the content of a <DT> tag.
DT.noWrap — Controls the wrapping of text within a <DT> block.
DVB-MHP — Digital Video Broadcasting - Multimedia Home Platform.
Dynamic HTML — A fourth generation browser technology for dynamically altering the document that describes a web page.
Dynamic positioning — Cascading style properties for positioning objects within the page.

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Custom object		Data Type
JavaScript Programmer's Reference, Cliff Wootton Wrox Press (www.wrox.com) Join the Wrox JavaScript forum at p2p.wrox.com Please report problems to support@wrox.com © 2001 Wrox Press. All Rights Reserved. Terms and conditions.

JavaScriptProgrammer'sReference

Chapter 4. D

JavaScript
Programmer's
Reference