:: Developer Zone ::

Method

Description

FF

N

IE

concat()

Joins two or more arrays and returns the result

1

4

4

join()

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

1

3

4

pop()

Removes and returns the last element of an array

1

4

5.5

push()

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

1

4

5.5

reverse()

Reverses the order of the elements in an array

1

3

4

shift()

Removes and returns the first element of an array

1

4

5.5

slice()

Returns selected elements from an existing array

1

4

4

sort()

Sorts the elements of an array

1

3

4

splice()

Removes and adds new elements to an array

1

4

5.5

toSource()

Represents the source code of an object

1

4

-

toString()

Converts an array to a string and returns the result

1

3

4

unshift()

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

1

4

6

valueOf()

Returns the primitive value of an Array object

1

2

4

Property

Description

FF

N

IE 

constructor

A reference to the function that created the object

1

2

4

index

1

3

4

input

1

3

4

length

Sets or returns the number of elements in an array

1

2

4

prototype

Allows you to add properties and methods to the object

1

2

4

Method

Description

FF

N

IE

toSource()

Represents the source code of an object

1

4

-

toString()

Converts a Boolean value to a string and returns the result

1

4

4

valueOf()

Returns the primitive value of a Boolean object

1

4

4

Property

Description

FF

N

IE 

constructor

A reference to the function that created the object

1

2

4

prototype

Allows you to add properties and methods to the object

1

2

4

Method

Description

FF

N

IE

Date()

Returns today’s date and time

1

2

3

getDate()

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

1

2

3

getDay()

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

1

2

3

getMonth()

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

1

2

3

getFullYear()

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

1

4

4

getYear()

Returns the year, as a two-digit or a four-digit number, from a Date object. Use getFullYear() instead !!

1

2

3

getHours()

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

1

2

3

getMinutes()

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

1

2

3

getSeconds()

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

1

2

3

getMilliseconds()

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

1

4

4

getTime()

Returns the number of milliseconds since midnight Jan 1, 1970

1

2

3

getTimezoneOffset()

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

1

2

3

getUTCDate()

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

1

4

4

getUTCDay()

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

1

4

4

getUTCMonth()

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

1

4

4

getUTCFullYear()

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

1

4

4

getUTCHours()

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

1

4

4

getUTCMinutes()

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

1

4

4

getUTCSeconds()

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

1

4

4

getUTCMilliseconds()

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

1

4

4

parse()

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

1

2

3

setDate()

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

1

2

3

setMonth()

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

1

2

3

setFullYear()

Sets the year in a Date object (four digits)

1

4

4

setYear()

Sets the year in the Date object (two or four digits). Use setFullYear() instead !!

1

2

3

setHours()

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

1

2

3

setMinutes()

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

1

2

3

setSeconds()

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

1

2

3

setMilliseconds()

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

1

4

4

setTime()

Calculates a date and time by adding or subtracting a specified number of milliseconds to/from midnight January 1, 1970

1

2

3

setUTCDate()

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

1

4

4

setUTCMonth()

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

1

4

4

setUTCFullYear()

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

1

4

4

setUTCHours()

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

1

4

4

setUTCMinutes()

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

1

4

4

setUTCSeconds()

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

1

4

4

setUTCMilliseconds()

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

1

4

4

toSource()

Represents the source code of an object

1

4

-

toString()

Converts a Date object to a string

1

2

4

toGMTString()

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

1

2

3

toUTCString()

Converts a Date object, according to universal time, to a string

1

4

4

toLocaleString()

Converts a Date object, according to local time, to a string

1

2

3

UTC()

Takes a date and returns the number of milliseconds since midnight of January 1, 1970 according to universal time

1

2

3

valueOf()

Returns the primitive value of a Date object

1

2

4

Property

Description

FF

N

IE 

constructor

A reference to the function that created the object

1

4

4

prototype

Allows you to add properties and methods to the object

1

3

4

Method

Description

FF

N

IE

abs(x)

Returns the absolute value of a number

1

2

3

acos(x)

Returns the arccosine of a number

1

2

3

asin(x)

Returns the arcsine of a number

1

2

3

atan(x)

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

1

2

3

atan2(y,x)

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

1

2

3

ceil(x)

Returns the value of a number rounded upwards to the nearest integer

1

2

3

cos(x)

Returns the cosine of a number

1

2

3

exp(x)

Returns the value of E^x

1

2

3

floor(x)

Returns the value of a number rounded downwards to the nearest integer

1

2

3

log(x)

Returns the natural logarithm (base E) of a number

1

2

3

max(x,y)

Returns the number with the highest value of x and y

1

2

3

min(x,y)

Returns the number with the lowest value of x and y

1

2

3

pow(x,y)

Returns the value of x to the power of y

1

2

3

random()

Returns a random number between 0 and 1

1

2

3

round(x)

Rounds a number to the nearest integer

1

2

3

sin(x)

Returns the sine of a number

1

2

3

sqrt(x)

Returns the square root of a number

1

2

3

tan(x)

Returns the tangent of an angle

1

2

3

toSource()

Represents the source code of an object

1

4

-

valueOf()

Returns the primitive value of a Math object

1

2

4

Property

Description

FF

N

IE 

constructor

A reference to the function that created the object

1

2

4

E

Returns Euler’s constant (approx. 2.718)

1

2

3

LN2

Returns the natural logarithm of 2 (approx. 0.693)

1

2

3

LN10

Returns the natural logarithm of 10 (approx. 2.302)

1

2

3

LOG2E

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

1

2

3

LOG10E

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

1

2

3

PI

Returns PI (approx. 3.14159)

1

2

3

prototype

Allows you to add properties and methods to the object

1

2

4

SQRT1_2

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

1

2

3

SQRT2

Returns the square root of 2 (approx. 1.414)

1

2

3

Method

Description

FF

N

IE

anchor()

Creates an HTML anchor

1

2

3

big()

Displays a string in a big font

1

2

3

blink()

Displays a blinking string

1

2

bold()

Displays a string in bold

1

2

3

charAt()

Returns the character at a specified position

1

2

3

charCodeAt()

Returns the Unicode of the character at a specified position

1

4

4

concat()

Joins two or more strings

1

4

4

fixed()

Displays a string as teletype text

1

2

3

fontcolor()

Displays a string in a specified color

1

2

3

fontsize()

Displays a string in a specified size

1

2

3

fromCharCode()

Takes the specified Unicode values and returns a string

1

4

4

indexOf()

Returns the position of the first occurrence of a specified string value in a string

1

2

3

italics()

Displays a string in italic

1

2

3

lastIndexOf()

Returns the position of the last occurrence of a specified string value, searching backwards from the specified position in a string

1

2

3

link()

Displays a string as a hyperlink

1

2

3

match()

Searches for a specified value in a string

1

4

4

replace()

Replaces some characters with some other characters in a string

1

4

4

search()

Searches a string for a specified value

1

4

4

slice()

Extracts a part of a string and returns the extracted part in a new string

1

4

4

small()

Displays a string in a small font

1

2

3

split()

Splits a string into an array of strings

1

4

4

strike()

Displays a string with a strikethrough

1

2

3

sub()

Displays a string as subscript

1

2

3

substr()

Extracts a specified number of characters in a string, from a start index

1

4

4

substring()

Extracts the characters in a string between two specified indices

1

2

3

sup()

Displays a string as superscript

1

2

3

toLowerCase()

Displays a string in lowercase letters

1

2

3

toUpperCase()

Displays a string in uppercase letters

1

2

3

toSource()

Represents the source code of an object

1

4

-

valueOf()

Returns the primitive value of a String object

1

2

4

Property

Description

FF

N

IE

constructor

A reference to the function that created the object

1

4

4

length

Returns the number of characters in a string

1

2

3

prototype

Allows you to add properties and methods to the object

1

2

4

Function

Description

FF

N

IE

decodeURI()

Decodes an encoded URI

1

4

5.5

decodeURIComponent()

Decodes an encoded URI component

1

4

5.5

encodeURI()

Encodes a string as a URI

1

4

5.5

encodeURIComponent()

Encodes a string as a URI component

1

4

5.5

escape()

Encodes a string

1

-

3

eval()

Evaluates a string and executes it as if it was script code

1

2

3

isFinite()

Checks if a value is a finite number

1

4

4

isNaN()

Checks if a value is not a number

1

2

3

Number()

Converts an object’s value to a number

1

parseFloat()

Parses a string and returns a floating point number

1

2

3

parseInt()

Parses a string and returns an integer

1

2

3

String()

Converts an object’s value to a string

1

unescape()

Decodes a string encoded by escape()

1

-

3

Property

Description

FF

N

IE 

Infinity

A numeric value that represents positive or negative infinity

1

4

4

NaN

Indicates that a value is “Not a Number”

1

4

4

undefined

Indicates that a variable has not been assigned a value

1

4

5.5