JAVASCRIPT CODE
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Syntax
<script [language="JavaScript] [src="scriptURL"]>
<!-- hide fron non-javaScript browsers

    //JavaScript statements

//-->
</script>

WINDOW
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frames[]            Array of child frames
frames.length       Number of defined child frames
self                The current window
status              Display message at bottom of document
opener              The window name of the calling window
parent              The parent window
top                 Top most window

alert("message")    Displays JavaScript Alert dialog box
blur()              Removes focus from current window
close()             Closes new window
confirm("message")  Displays a Confirm dialog box
focus()             Brings focus to current window
prompt("message")   Displays a prompt dialog box
scroll(x,y)         Scrolls current window to pixel coordinates (x,y)
open("URL," "windowname" "feature1, feature2, feature3, etc.")
                    Opens a new window with specified name and feature

- toolbar=yes or no         Determine whether to include Back, Forward, Home
- location=yes or no        Determine whether to show current URL location
- directories=yes or no     Determine to show other buttons
- status=yes or no          Determine to display status bar or not
- menubar=yes or no         Determine to display menu bar or not
- scrollbars=yes or no      Determine to create scroll bars or not
- resizable=yes or no       Determine whether user may resize the window
- copyhistory=yes or no     Determine whether new window contain current info
- width = # pixels          Defines how wide the window should be
- height= # pixels          Defines how tall the window should be

LOCATION
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current             Contains the value of the current URL
href                The entire URL as JavaScript string
protocol            A string consisting first part of the URL
host                A string consisting of the hostname of the URL
hostname            A string consisting of the hostname of the URL
port                A string consisting of the port from the URL
pathname            A string consisting everthing after third slash
hash                A string consisting of any text after the #
search              A string consisting of any text after the ?
length              Contains the current length of history list

back()              Moves user to the URL of the back page
forward()           Moves user to the URL of the forward page
go()                Moves user to the desire URL

DOCUMENT
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title               Current document title
location            Full URL of the document
lastModified        A date object string of document was last modified
referrer            Contains the URL of the calling document
bgColor             Background color
fgColor             Foreground (text) color
linkColor           Hyperlink color
vlinkColor          Visited hyperlink color
alinkColor          Activated hyperlink color
forms[]             Array of forms objects in the document
forms.length        The number of form objects within the document
links[]             Array objects corresponding to all HREF links
links.length        The number of HREF links in the document
anchors[]           Array of all "named" anchors within the document
anchors.length      The number of named anchors in the document
images[]            Image objects that correspond to each image
applets[]           Java applets that correspond to each applet
embeds[]            Plugins objects that represent each plug-in

write("string")     Write strings to the current window
writeln("string")   Perform same as write(), but adds a carriage
clear()             Clears the window
close()             Closes the window

FORM
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name                String value of the "name" attribute of <form>
method              Numeric value of the "method" attribute of <form>
action              String value of the "action" attribute of <form>
target              Window targeted for form response ater submitted
elements[index]     Object that contains object of each element
length              Contains the number of elements in the form

submit()            Submits the form
reset()             Resets the form

onSubmit()          Identifies code to run when the form is submitted
onReset()           Identifies code to run when the form is reset

TEXT and TEXTAREA
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name                String value of the name attribute
value               String value of the contents in the field
defaultValue        String value of the initial contents of the field
type                Specifies what type of object this form field is

focus()             Sets input focus to the object
blur()              Removes input focus from the object
select()            Selects the object's input field

onFocus             Executes when input focus enters field
onBlur              Executes when input focus leaves the field
onSelect            Executes when the field is input-focus
onChange            Executes when input focus exits field with change

CHECKBOX
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name                String value of the "name" attribute
value               String value of the contents of the checkbox
checked             Boolean value that reflects the "checked" attrib
defaultChecked      Same as checked but defaulted
type                Specifies what type of object the form field is

click()             Selects the checkbox, causing it to be "on"

onClick             Excecutes when the user checks or unckecks box

RADIO
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name                String value of the "name" attribute
length              The number of radio buttons in the radio object
value               String value of the "value" attribute
checked             Boolean value. True if pressed; false if not
defaultChecked      Boolean property that reflects the "checked" attrib
type                Specifies what type of object this form field is

click()             Selects the radio button

onClick             Executes when the radio button is selected

SELECT
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length              Contains the number of objects in the select object
name                The internal name of the select object by "name"
selectedIndex       The index number of currently selected option
type                Specifies what type of object this form field is
options[]           Property is an object reflecting <option> tag
- text              String containing the text after the <option> tag
- value             Reflecting of the "value" attribute
- defaultSelected   Boolean, which reflects the "selected" attribute
- selected          Boolean, which indicates the current selected state

onFocus             Executes when input enters the field
onBlur              Executes when input focus leaves the field
onChange            Executes when input focus exits field with changes

BUTTON
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value               String containing the "value" attribute
name                String containing the "name"  attribute
type                Sepcifies what type of object this form field is

click()             Selects the button

onClick             Executes when a button is clicked

SUBMIT and RESET
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name                The contents of the "name"  attribute
value               The contents of the "value" attribute

click()             Selects the button

onClick             Triggers when the button is clicked

PASSWORD
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defaultValue        Contains the contents of the "value" atrribute
name                The contents of the "name" attribute
value               The current data entered into the password field
type                Specifies waht type of object this form field is

focus()             Brings focus onto the password element
blur()              Removes focus from the password element
select()            Selects the current data in the password

NAVIGATOR
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appCodeName         Reflects the "codename" of the user's browser
appName             Reflects the real name of the user's browser
appVersion          Reflects the version number of the user's browser
userAgent           Reflects the full information of the browser
plugins[]           This array reflects which plug-ins are installed
mimeType[]          An array reflects which mime type are configured

javaEnabled()       This method returns value of true if javs enabled

STRING              strvar = new String(string)
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length              he length of the string

big()               Yield the string <big></big>
blink()             Yield the string <blink></blink>
bold()              Yield the string <b></b>
fixed()             n/a
italics()           Yield the string <i></i>
small()             Yield the string <small></small>
sub()               n/a
strike()            n/a
sup()               n/a
fontColor(color)    Yield the string <font color="color"></font>
fontSize(size)      n/a
charAt(index)       returns the character located at index in string
indexOf(searchValue, [fromIndex]
                    Searches the string for the first instance of the
                    string searchValue
lastIndexOf(searchValue, [fromIndex]
                    Searches for searchValue beginning at (rightmost)
                    the end of the string and working backward
substring(indexA, indexB)
                    Extracts the substring starting from indexA to
                    indexB
toLoweCase()        Convert string to all lowercase letters
toUpperCase()       Convert string to all uppercase letters

DATE                variablename = new Date();
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getDay()            Returns the current number of days
getDate()           Returns the current string of dates
getHours()          Returns the current number of hours
getMinutes()        Returns the current number of minutes
getMonth()          Returns the current number of months
getSeconds()        Returns the current number of seconds
getTime()           Returns the current string of time
getTimeZoneOffset() Returns the current string of time to terminate
getYear()           Returns the current number of years
setDate()           Set date
setHours()          Set hours
setMinutes()        set minutes
setSeconds()        set seconds
setTime()           set time
setYear()           set year
toGMTString()       Returns the current date in GMT format
toLocaleString()    Returns the current date in locale format
parse(date)         Convert a traditional date string into millisecond
                    format for use with the setTime() method

MATH
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LN10                2.302   (natural log of 10)
LN2                 0.693   (natural log of  2)
PI                  3.1415  (value of PI)
SQRT_2              0.707   (the square root of 1/2)
SQRT2               1.414   (the square root of 2)

abs(x)              Returns absolute value of x
acos(x)             Returns arc cosine of x
asin(x)             Returns arc sine of x
atan(x)             Returns arc tangent of x
ceil(x)             Returns the least integer greater or equal to x
cos(x)              Returns the cosine of x
exp(x)              Returns e to the power of x
floor(x)            Returns the greatest integer less or equal to x
log(x)              Returns the natural log of x
max(x,y)            Returns the greater of x and y
min(x,y)            Returns the smaller of x and y
pow(x,y)            Returns x to the yth power
round(x)            Returns x rounded to the nearest integer
random(x)           Returns a random real number between 0 and 1
sin(x)              Returns sine of x
sqrt(x)             Returns square root of x
tan(x)              Returns tangent of x

IMAGE               document.images[index].p or document.formname.p
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border              Reflects the "boder" attribute
complete            Boolean value whether image loaded or not
height              Reflects the "height" attribute
hspace              Reflects the "hspace" attribute
lowsrc              Reflects the "lowsrc" attribute
name                Reflects the "name" attribute
prototype           Lets you and properties to an Image object
src                 Reflects the "src" attribute
vspace              Reflects the "vspace" attribute
width               Reflects the "width" attribute
length              Reflects how many images are in the page

ARRAY               arrayvar = new Array(length)
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length              Reflects the number of elements in the array

join(separator)     Joins all elements in array into one string
reverse()           Reverses the index order of all elements in array
sort(sortfunc)      Sorts the index order of elements in array

Basic JavaScript Codes and Conditions
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//          Single line comment
/* ... */       Mutiple line comment

<!-- var statement -->
var variablename = value;

<!-- if...else statement -->
if (condition)
{
    statements if true
}
else
{
    statements if false
}

<!-- while statement -->
while (condition)
{
    statments
}

<!-- for statement -->
for (initialize counter; condition; update counter)
{
    statements
}

<!-- for...in statement -->
for (counter in object)
{
    statements
}

<!-- with statement -->
with (object)
{
    statements
}

<!-- functions -->
defined:
function funcname(parameter1, parameter2, ...)
{
    statements
}

called:
funcname(parameter1, parameter2, ...);

assignment operator for returned results:
variable = funcname(parameter1, parameter2, ...);

object creation:
objectname = new objfunction(property1, property2, ...);