Reflect Me !: ECMAScript

Showing posts with label ECMAScript. Show all posts

Thursday, April 4, 2013

Javascript Image Object Methods

The Image object represents an embedded image.

Image Object Properties

Align Sets or returns how to align an image according to the surrounding text

Alt Sets or returns an alternate text to be displayed, if a browser cannot show an image

Border Sets or returns the border around an image

Complete Returns whether or not the browser has finished loading the image

Height Sets or returns the height of an image

Hspace Sets or returns the white space on the left and right side of the image

Id Sets or returns the id of the image

isMap Returns whether or not an image is a server-side image map

longDesc Sets or returns a URL to a document containing a description of the image

Lowsrc Sets or returns a URL to a low-resolution version of an image

Name Sets or returns the name of an image

Src Sets or returns the URL of an image

useMap Sets or returns the value of the usemap attribute of an client-side image map

Vspace Sets or returns the white space on the top and bottom of the image

Width Sets or returns the width of an image

Javascript Button Object Properties and Event Handlers

The Button object represents a push button.

Button Object Properties

accessKey Sets or returns the keyboard key to access a button

Disabled Sets or returns whether a button should be disabled

Form Returns a reference to the form that contains the button

Id Sets or returns the id of a button

Name Sets or returns the name of a button

tabIndex Sets or returns the tab order for a button

Type Returns the type of form element a button is

Value Sets or returns the text that is displayed on a button

Event Handlers

Onabort Loading of an image is interrupted

Onblur An element loses focus

Onchange The content of a field changes

Onclick Mouse clicks an object

Ondblclick Mouse double-clicks an object

Onerror An error occurs when loading a document or an image

Onfocus An element gets focus

Onkeydown A keyboard key is pressed

Onkeypress A keyboard key is pressed or held down

Onkeyup A keyboard key is released

Onload A page or an image is finished loading

Onmousedown A mouse button is pressed

Onmousemove The mouse is moved

Onmouseout The mouse is moved off an element

Onmouseover The mouse is moved over an element

Onmouseup A mouse button is released

Onreset The reset button is clicked

Onresize A window or frame is resized

Onselect Text is selected

Onsubmit The submit button is clicked

Onunload The user exits the page

Javascript Methods on Document Object

The Document object represents the entire HTML document and can be used to access all elements in a page.

Document Object Collections

anchors[] Returns a reference to all Anchor objects in the document

forms[] Returns a reference to all Form objects in the document

images[] Returns a reference to all Image objects in the document

links[] Returns a reference to all Area and Link objects in the document

Document Object Properties

Body Gives direct access to the <body> element

Cookie Sets or returns all cookies associated with the current document

Domain Returns the domain name for the current document

lastModified Returns the date and time a document was last modified

Referrer Returns the URL of the document that loaded the current document

Title Returns the title of the current document

URL Returns the URL of the current document

Document Object Methods

close() Closes an output stream opened with the document.open() method

getElementById() Returns a reference to the first object with the specified id

getElementsByName() Returns a collection of objects with the specified name

getElementsByTagName() Returns a collection of objects with the specified tagname

open() Opens a stream to collect the output from any document.write() or document.writeln()

write() Writes HTML expressions or JavaScript code to a document

writeln() Identical to the write(), with the addition of writing a new line character after expression

Javascript Screen Object Properties

The Screen object is actually a JavaScript object, not an HTML DOM object..

Screen Object Properties

availHeight Returns the height of the display screen (excluding the Windows Taskbar)

availWidth Returns the width of the display screen (excluding the Windows Taskbar)

bufferDepth Sets or returns the bit depth of the color palette in the off-screen bitmap buffer

colorDepth Returns the bit depth of the color palette on the destination device or buffer

deviceXDPI Returns the number of horizontal dots per inch of the display screen

deviceYDPI Returns the number of vertical dots per inch of the display screen

fontSmoothingEnabledReturns whether the user has enabled font smoothing in the display control panel

Height The height of the display screen

logicalXDPI Returns the normal number of horizontal dots per inch of the display screen

logicalYDPI Returns the normal number of vertical dots per inch of the display screen

pixelDepth Returns the color resolution (in bits per pixel) of the display screen

updateInterval Sets or returns the update interval for the screen

Width Returns width of the display screen

Javascript functions on Windows Object

The Window object is the top level object in the JavaScript hierarchy.

Window Object Collections

frames[] Returns all named frames in the window

Closed Returns whether or not a window has been closed

defaultStatus Sets or returns the default text in the statusbar of the window

Document See Document object

history

Length Sets or returns the number of frames in the window

Location

Name Sets or returns the name of the window

Opener Returns a reference to the window that created the window

outerHeight Sets or returns the outer height of a window

outerWidth Sets or returns the outer width of a window

pageXOffset Sets or returns the X position of the current page in relation to the upper left corner

pageYOffset Sets or returns the Y position of the current page in relation to the upper left corner

Parent Returns the parent window

Personalbar Sets whether or not the browser's personal bar (or directories bar) should be visible

Scrollbars Sets whether or not the scrollbars should be visible

Self Returns a reference to the current window

Status Sets the text in the statusbar of a window

Statusbar Sets whether or not the browser's statusbar should be visible

Toolbar Sets whether or not the browser's tool bar is visible or not

Top Returns the topmost ancestor window

Window Object Methods

alert() Displays an alert box with a message and an OK button

blur() Removes focus from the current window

clearInterval() Cancels a timeout set with setInterval()

clearTimeout() Cancels a timeout set with setTimeout()

close() Closes the current window

confirm() Displays a dialog box with a message and an OK and a Cancel button

createPopup() Creates a pop-up window

focus() Sets focus to the current window

moveBy() Moves a window relative to its current position

moveTo() Moves a window to the specified position

open() Opens a new browser window

print() Prints the contents of the current window

prompt() Displays a dialog box that prompts the user for input

resizeBy() Resizes a window by the specified pixels

resizeTo() Resizes a window to the specified width and height

scrollBy() Scrolls the content by the specified number of pixels

scrollTo() Scrolls the content to the specified coordinates

setInterval() Evaluates an expression at specified intervals

setTimeout() Evaluates an expression after a specified number of milliseconds

Javascript function on Number Object

The Number object is an object wrapper for primitive numeric values.

Syntax for creating a Number object: var myNum=new Number(number);

Number Object Properties

Constructor Returns a reference to the Number function that created the object

MAX_VALUE Returns the largest possible value in JavaScript

MIN_VALUE Returns the smallest possible value in JavaScript

NaN Represents "Not-a-number" value

NEGATIVE_INFINITY Represents a value that is less than MIN_VALUE

POSITIVE_INFINITY Represents a value that is greater than MAX_VALUE

Prototype Allows you to add properties and methods to the object

Number Object Methods

toExponential() Converts the value of the object into an exponential notation

toFixed() Formats a number to the specified number of decimals

toLocaleString()

toPrecision() Converts a number into a number with a specified number of digits

toString() Converts the Number object into a string

valueOf() Returns the value of the Number object

Javascript Functions on Math Object

The Math object allows you to perform mathematical tasks.

Syntax for using properties/methods of Math:

var pi_value=Math.PI; var

sqrt_value=Math.sqrt(16);

Math Object Properties

E Returns Euler's constant (approx. 2.718)

Ln2 Returns the natural logarithm of 2 (approx. 0.693)

Ln10 Returns the natural logarithm of 10 (approx. 2.302)

LOG2E Returns the base-2 logarithm of E (approx. 1.442)

LOG10E Returns the base-10 logarithm of E (approx. 0.434)

PI Returns PI (approx. 3.14159)

SQRT1_2 Returns the square root of 1/2 (approx. 0.707)

SQRT2 Returns the square root of 2 (approx. 1.414)

abs(x) Returns the absolute value of a number

acos(x) Returns the arccosine of a number

asin(x) Returns the arcsine of a number

atan(x) Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians

atan2(y,x) Returns the angle theta of an (x,y) point as a numeric value between -PI and PI radians

ceil(x) Returns the value of a number rounded upwards to the nearest integer

cos(x) Returns the cosine of a number

exp(x) Returns the value of Ex

floor(x) Returns the value of a number rounded downwards to the nearest integer

log(x) Returns the natural logarithm (base E) of a number

max(x,y) Returns the number with the highest value of x and y

min(x,y) Returns the number with the lowest value of x and y

pow(x,y) Returns the value of x to the power of y

random() Returns a random number between 0 and 1

round(x) Rounds a number to the nearest integer

sin(x) Returns the sine of a number

sqrt(x) Returns the square root of a number

tan(x) Returns the tangent of an angle

toSource() Represents the source code of an object

valueOf() Returns the primitive value of a Math object

Javascript Functions on the Boolean Object

The Boolean object represents two values: "true" or "false".

Syntax for creating a Boolean object:

var myBool=new Boolean(value)

Boolean Object Properties

Constructor Returns a reference to the Boolean function that created the object

Prototype Allows you to add properties and methods to the object

Boolean Object Methods

toSource() Returns the source code of the object

toString() Converts a Boolean value to a string and returns the result

valueOf() Returns the primitive value of a Boolean object

Javascript functions on the Array Object

The Array object is used to store multiple values in a single variable.

Syntax for creating an Array object:

var myCars=new Array("Saab","Volvo","BMW")

Array Object Properties

Constructor Returns a reference to the array function that created the object

index

input

Length Sets or returns the number of elements in an array

Prototype Allows you to add properties and methods to the object

Array Object Methods

Method

concat() Joins two or more arrays and returns the result

join() Puts all the elements of an array into a string. The elements are separated by a delimiter

pop() Removes and returns the last element of an array

push() Adds one or more elements to the end of an array and returns the new length

reverse() Reverses the order of the elements in an array

shift() Removes and returns the first element of an array

slice() Returns selected elements from an existing array

sort() Sorts the elements of an array

splice() Removes and adds new elements to an array

toSource() Represents the source code of an object

toString() Converts an array to a string and returns the result

unshift() Adds one or more elements to the beginning of an array and returns the new length

valueOf() Returns the primitive value of an Array object

javascript Functions on the Date Object

The Date object is used to work with dates and times.

Syntax for creating a Date object:

var myDate=new Date()

Date Object Properties

Constructor Returns a reference to the Date function that created the object

Prototype Allows you to add properties and methods to the object

Date Object Methods

Date() Returns today's date and time

getDate() Returns the day of the month from a Date object (from 1-31)

getDay() Returns the day of the week from a Date object (from 0-6)

getFullYear() Returns the year, as a four-digit number, from a Date object

getHours() Returns the hour of a Date object (from 0-23)

getMilliseconds() Returns the milliseconds of a Date object (from 0-999)

getMinutes() Returns the minutes of a Date object (from 0-59)

getMonth() Returns the month from a Date object (from 0-11)

getSeconds() Returns the seconds of a Date object (from 0-59)

getTime() Returns the number of milliseconds since midnight Jan 1, 1970

getTimezoneOffset() Returns the difference in minutes between local time and Greenwich Mean Time (GMT)

getUTCDate() Returns the day of the month from a Date object according to universal time (from 1-31)

getUTCDay() Returns the day of the week from a Date object according to universal time (from 0-6)

getUTCMonth() Returns the month from a Date object according to universal time (from 0-11)

getUTCFullYear() Returns the four-digit year from a Date object according to universal time

getUTCHours() Returns the hour of a Date object according to universal time (from 0-23)

getUTCMinutes() Returns the minutes of a Date object according to universal time (from 0-59)

getUTCSeconds() Returns the seconds of a Date object according to universal time (from 0-59)

getUTCMilliseconds()Returns the milliseconds of a Date object according to universal time (from 0-999)

parse() Takes a date string and returns the number of milliseconds since midnight of January 1, 1970

setDate() Sets the day of the month in a Date object (from 1-31)

setFullYear() Sets the year in a Date object (four digits)

setHours() Sets the hour in a Date object (from 0-23)

setMilliseconds() Sets the milliseconds in a Date object (from 0-999)

setMinutes() Set the minutes in a Date object (from 0-59)

setMonth() Sets the month in a Date object (from 0-11)

setSeconds() Sets the seconds in a Date object (from 0-59)

setTime() Calculates time adding or subtracting a number of milliseconds from midnight January 1, 1970

setUTCDate() Sets the day of the month in a Date object according to universal time (from 1-31)

setUTCMonth() Sets the month in a Date object according to universal time (from 0-11)

setUTCFullYear() Sets the year in a Date object according to universal time (four digits)

setUTCHours() Sets the hour in a Date object according to universal time (from 0-23)

setUTCMinutes() Set the minutes in a Date object according to universal time (from 0-59)

setUTCSeconds() Set the seconds in a Date object according to universal time (from 0-59)

setUTCMilliseconds()Sets the milliseconds in a Date object according to universal time (from 0-999)

toDateString() Returns the date portion of a Date object in readable form

toGMTString() Converts a Date object, according to Greenwich time, to a string. Use toUTCString() instead !!

toLocaleDateString()Converts a Date object, according to local time, to a string and returns the date portion

toLocaleTimeString()Converts a Date object, according to local time, to a string and returns the time portion

toLocaleString() Converts a Date object, according to local time, to a string

toSource() Represents the source code of an object

toString() Converts a Date object to a string

toTimeString() Returns the time portion of a Date object in readable form

toUTCString() Converts a Date object, according to universal time, to a string

UTC() Takes a date and returns the number of milliseconds since midnight of January 1, 1970

valueOf() Returns the primitive value of a Date object

Javascript Functions On the String Object

The String object let's you work with text.

Syntax for creating a String object : var myStr=new String(string);

String Object Properties

Constructor A reference to the function that created the object

Length Returns the number of characters in a string

Prototype Allows you to add properties and methods to the object

String Object Methods

anchor() : Creates an HTML anchor

big() : Displays a string in a big font

blink() : Displays a blinking string

bold() : Displays a string in bold

charAt() : Returns the character at a specified position

charCodeAt() : Returns the Unicode of the character at a specified position

concat() : Joins two or more strings

fixed() : Displays a string as teletype text

fontcolor() : Displays a string in a specified color

fontsize() : Displays a string in a specified size

fromCharCode() : Takes the specified Unicode values and returns a string

indexOf() : Returns the position of the first occurrence of a specified string value in a string

italics() : Displays a string in italic

lastIndexOf() : Returns the position of the last occurrence of a string value, searching backwards

link() : Displays a string as a hyperlink

match() : Searches for a specified value in a string

replace() : Replaces some characters with some other characters in a string

search() : Searches a string for a specified value

slice() : Extracts a part of a string and returns the extracted part in a new string

small() : Displays a string in a small font

split() : Splits a string into an array of strings

strike() : Displays a string with a strikethrough

sub() : Displays a string as subscript

substr() : Extracts a specified number of characters in a string, from a start index

substring() : Extracts the characters in a string between two specified indices

sup() : Displays a string as superscript

toLowerCase() : Displays a string in lowercase letters

toUpperCase() : Displays a string in uppercase letters

toSource() : Represents the source code of an object

valueOf() : Returns the primitive value of a String object

Reflect Me !

Thursday, April 4, 2013

Javascript Image Object Methods

Javascript Button Object Properties and Event Handlers

Javascript Methods on Document Object

Javascript Screen Object Properties

Javascript functions on Windows Object

Javascript function on Number Object

Javascript Functions on Math Object

Javascript Functions on the Boolean Object

Javascript functions on the Array Object

javascript Functions on the Date Object

Javascript Functions On the String Object

Science News

Blog Archive