分类: Python/Ruby
2012-05-13 01:36:29
Property | Description |
---|---|
constructor | Returns the function that created the Array object's prototype |
length | Sets or returns the number of elements in an array |
prototype | Allows you to add properties and methods to an Array object |
Method | Description |
---|---|
concat() | Joins two or more arrays, and returns a copy of the joined arrays |
indexOf() | Search the array for an element and returns it's position |
join() | Joins all elements of an array into a string |
lastIndexOf() | Search the array for an element, starting at the end, and returns it's position |
pop() | Removes the last element of an array, and returns that element |
push() | Adds new elements to the end of an array, and returns the new length |
reverse() | Reverses the order of the elements in an array |
shift() | Removes the first element of an array, and returns that element |
slice() | Selects a part of an array, and returns the new array |
sort() | Sorts the elements of an array |
splice() | Adds/Removes elements from an array |
toString() | Converts an array to a string, and returns the result |
unshift() | Adds new elements to the beginning of an array, and returns the new length |
valueOf() | Returns the primitive value of an array |
Property | Description |
---|---|
constructor | Returns the function that created the Boolean object's prototype |
prototype | Allows you to add properties and methods to a Boolean object |
Method | Description |
---|---|
toString() | Converts a Boolean value to a string, and returns the result |
valueOf() | Returns the primitive value of a Boolean object |
Property | Description |
---|---|
constructor | Returns the function that created the Date object's prototype |
prototype | Allows you to add properties and methods to an object |
Method | Description |
---|---|
getDate() | Returns the day of the month (from 1-31) |
getDay() | Returns the day of the week (from 0-6) |
getFullYear() | Returns the year (four digits) |
getHours() | Returns the hour (from 0-23) |
getMilliseconds() | Returns the milliseconds (from 0-999) |
getMinutes() | Returns the minutes (from 0-59) |
getMonth() | Returns the month (from 0-11) |
getSeconds() | Returns the seconds (from 0-59) |
getTime() | Returns the number of milliseconds since midnight Jan 1, 1970 |
getTimezoneOffset() | Returns the time difference between GMT and local time, in minutes |
getUTCDate() | Returns the day of the month, according to universal time (from 1-31) |
getUTCDay() | Returns the day of the week, according to universal time (from 0-6) |
getUTCFullYear() | Returns the year, according to universal time (four digits) |
getUTCHours() | Returns the hour, according to universal time (from 0-23) |
getUTCMilliseconds() | Returns the milliseconds, according to universal time (from 0-999) |
getUTCMinutes() | Returns the minutes, according to universal time (from 0-59) |
getUTCMonth() | Returns the month, according to universal time (from 0-11) |
getUTCSeconds() | Returns the seconds, according to universal time (from 0-59) |
getYear() | Deprecated. Use the getFullYear() method instead |
parse() | Parses a date string and returns the number of milliseconds since midnight of January 1, 1970 |
setDate() | Sets the day of the month of a date object |
setFullYear() | Sets the year (four digits) of a date object |
setHours() | Sets the hour of a date object |
setMilliseconds() | Sets the milliseconds of a date object |
setMinutes() | Set the minutes of a date object |
setMonth() | Sets the month of a date object |
setSeconds() | Sets the seconds of a date object |
setTime() | Sets a date and time by adding or subtracting a specified number of milliseconds to/from midnight January 1, 1970 |
setUTCDate() | Sets the day of the month of a date object, according to universal time |
setUTCFullYear() | Sets the year of a date object, according to universal time (four digits) |
setUTCHours() | Sets the hour of a date object, according to universal time |
setUTCMilliseconds() | Sets the milliseconds of a date object, according to universal time |
setUTCMinutes() | Set the minutes of a date object, according to universal time |
setUTCMonth() | Sets the month of a date object, according to universal time |
setUTCSeconds() | Set the seconds of a date object, according to universal time |
setYear() | Deprecated. Use the setFullYear() method instead |
toDateString() | Converts the date portion of a Date object into a readable string |
toGMTString() | Deprecated. Use the toUTCString() method instead |
toISOString() | Returns the date as a string, using the ISO standard |
toJSON() | Returns the date as a string, formated as a JSON date |
toLocaleDateString() | Returns the date portion of a Date object as a string, using locale conventions |
toLocaleTimeString() | Returns the time portion of a Date object as a string, using locale conventions |
toLocaleString() | Converts a Date object to a string, using locale conventions |
toString() | Converts a Date object to a string |
toTimeString() | Converts the time portion of a Date object to a string |
toUTCString() | Converts a Date object to a string, according to universal time |
UTC() | Returns the number of milliseconds in a date string since midnight of January 1, 1970, according to universal time |
valueOf() | Returns the primitive value of a Date object |
Property | Description |
---|---|
E | Returns Euler's number (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. 3.14) |
SQRT1_2 | Returns the square root of 1/2 (approx. 0.707) |
SQRT2 | Returns the square root of 2 (approx. 1.414) |
Method | Description |
---|---|
abs(x) | Returns the absolute value of x |
acos(x) | Returns the arccosine of x, in radians |
asin(x) | Returns the arcsine of x, in radians |
atan(x) | Returns the arctangent of x as a numeric value between -PI/2 and PI/2 radians |
atan2(y,x) | Returns the arctangent of the quotient of its arguments |
ceil(x) | Returns x, rounded upwards to the nearest integer |
cos(x) | Returns the cosine of x (x is in radians) |
exp(x) | Returns the value of Ex |
floor(x) | Returns x, rounded downwards to the nearest integer |
log(x) | Returns the natural logarithm (base E) of x |
max(x,y,z,...,n) | Returns the number with the highest value |
min(x,y,z,...,n) | Returns the number with the lowest value |
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 x to the nearest integer |
sin(x) | Returns the sine of x (x is in radians) |
sqrt(x) | Returns the square root of x |
tan(x) | Returns the tangent of an angle |
Property | Description |
---|---|
constructor | Returns the function that created the Number object's prototype |
MAX_VALUE | Returns the largest number possible in JavaScript |
MIN_VALUE | Returns the smallest number possible in JavaScript |
NEGATIVE_INFINITY | Represents negative infinity (returned on overflow) |
POSITIVE_INFINITY | Represents infinity (returned on overflow) |
prototype | Allows you to add properties and methods to an object |
Method | Description |
---|---|
toExponential(x) | Converts a number into an exponential notation |
toFixed(x) | Formats a number with x numbers of digits after the decimal point |
toPrecision(x) | Formats a number to x length |
toString() | Converts a Number object to a string |
valueOf() | Returns the primitive value of a Number object |
Property | Description |
---|---|
constructor | Returns the function that created the String object's prototype |
length | Returns the length of a string |
prototype | Allows you to add properties and methods to an object |
Method | Description |
---|---|
charAt() | Returns the character at the specified index |
charCodeAt() | Returns the Unicode of the character at the specified index |
concat() | Joins two or more strings, and returns a copy of the joined strings |
fromCharCode() | Converts Unicode values to characters |
indexOf() | Returns the position of the first found occurrence of a specified value in a string |
lastIndexOf() | Returns the position of the last found occurrence of a specified value in a string |
match() | Searches for a match between a regular expression and a string, and returns the matches |
replace() | Searches for a match between a substring (or regular expression) and a string, and replaces the matched substring with a new substring |
search() | Searches for a match between a regular expression and a string, and returns the position of the match |
slice() | Extracts a part of a string and returns a new string |
split() | Splits a string into an array of substrings |
substr() | Extracts the characters from a string, beginning at a specified start position, and through the specified number of character |
substring() | Extracts the characters from a string, between two specified indices |
toLowerCase() | Converts a string to lowercase letters |
toUpperCase() | Converts a string to uppercase letters |
valueOf() | Returns the primitive value of a String object |
HTML Wrapper Method | Description |
---|---|
anchor() | Creates an anchor |
big() | Displays a string using a big font |
blink() | Displays a blinking string |
bold() | Displays a string in bold |
fixed() | Displays a string using a fixed-pitch font |
fontcolor() | Displays a string using a specified color |
fontsize() | Displays a string using a specified size |
italics() | Displays a string in italic |
link() | Displays a string as a hyperlink |
small() | Displays a string using a small font |
strike() | Displays a string with a strikethrough |
sub() | Displays a string as subscript text |
sup() | Displays a string as superscript text |
Modifier | Description |
---|---|
i | Perform case-insensitive matching |
g | Perform a global match (find all matches rather than stopping after the first match) |
m | Perform multiline matching |
Expression | Description |
---|---|
[abc] | Find any character between the brackets |
[^abc] | Find any character not between the brackets |
[0-9] | Find any digit from 0 to 9 |
[A-Z] | Find any character from uppercase A to uppercase Z |
[a-z] | Find any character from lowercase a to lowercase z |
[A-z] | Find any character from uppercase A to lowercase z |
[adgk] | Find any character in the given set |
[^adgk] | Find any character outside the given set |
(red|blue|green) | Find any of the alternatives specified |
Metacharacter | Description |
---|---|
. | Find a single character, except newline or line terminator |
\w | Find a word character |
\W | Find a non-word character |
\d | Find a digit |
\D | Find a non-digit character |
\s | Find a whitespace character |
\S | Find a non-whitespace character |
\b | Find a match at the beginning/end of a word |
\B | Find a match not at the beginning/end of a word |
\0 | Find a NUL character |
\n | Find a new line character |
\f | Find a form feed character |
\r | Find a carriage return character |
\t | Find a tab character |
\v | Find a vertical tab character |
\xxx | Find the character specified by an octal number xxx |
\xdd | Find the character specified by a hexadecimal number dd |
\uxxxx | Find the Unicode character specified by a hexadecimal number xxxx |
Quantifier | Description |
---|---|
n+ | Matches any string that contains at least one n |
n* | Matches any string that contains zero or more occurrences of n |
n? | Matches any string that contains zero or one occurrences of n |
n{X} | Matches any string that contains a sequence of X n's |
n{X,Y} | Matches any string that contains a sequence of X to Y n's |
n{X,} | Matches any string that contains a sequence of at least X n's |
n$ | Matches any string with n at the end of it |
^n | Matches any string with n at the beginning of it |
?=n | Matches any string that is followed by a specific string n |
?!n | Matches any string that is not followed by a specific string n |
Property | Description |
---|---|
global | Specifies if the "g" modifier is set |
ignorecase | Specifies if the "i" modifier is set |
lastIndex | The index at which to start the next match |
multiline | Specifies if the "m" modifier is set |
source | The text of the RegExp pattern |
Method | Description |
---|---|
compile() | Compiles a regular expression |
exec() | Tests for a match in a string. Returns the first match |
test() | Tests for a match in a string. Returns true or false |
Property | Description |
---|---|
Infinity | A numeric value that represents positive/negative infinity |
NaN | "Not-a-Number" value |
undefined | Indicates that a variable has not been assigned a value |
Function | Description |
---|---|
decodeURI() | Decodes a URI |
decodeURIComponent() | Decodes a URI component |
encodeURI() | Encodes a URI |
encodeURIComponent() | Encodes a URI component |
escape() | Encodes a string |
eval() | Evaluates a string and executes it as if it was script code |
isFinite() | Determines whether a value is a finite, legal number |
isNaN() | Determines whether a value is an illegal number |
Number() | Converts an object's value to a number |
parseFloat() | Parses a string and returns a floating point number |
parseInt() | Parses a string and returns an integer |
String() | Converts an object's value to a string |
unescape() | Decodes an encoded string |