| Command | Definition |
|---|---|
charAt(x) |
returns the character of a string at position x where x
is a number. The first index of a string is 0. |
charCodeAt(x) |
returns the ANSI code of the character of a string at position x where
x is a number. The first index of a string is 0. |
fromCharCodeAt(x,y,z) |
pass this function a series of comma separated numbers that represent ANSI characters
and it will create a string of them. Example: foo = String.fromCharCodeAt(65,66,67); will give foo = "ABC". |
indexOf("foo") |
returns the position of the string foo in a larger string. The position of the first character in a string is 0. If the string is not found, it returns -1. |
lastIndexOf("foo") |
same as the above except the code searches the string starting at the end of the string. If the string is not found it retunrs -1. |
substr(x,y) |
will cut out part of a string. The cut begins at character x and will have length
y. |
substring(x,y) |
will cut out part of a string. The cut string begins at position x and ends at position
y-1. |
toLowerCase() |
changes all alphabetical characters in a string to lowercase. Does not effect other characters. |
toUpperCase() |
changes all alphabetical characters in a string to uppercase. Does not effect other characters. |
split("x") |
Splits a string at the character x and returns the parts as an array. |
replace("test", "foo") |
Replaces all occurences of test with foo in a string. For example,
newstring = oldstring.replace("test", "foo") will give newstring a copy of
oldstring except with the new replacesment(s). The value of oldstring, however,
remains unchanged. |
search("foo") |
Searches for a particular string and returns the character position where it begins. If the string is not found, -1 is returned. |
match("foo") |
Matches the substring in a larger string and returns an array with the substing as it's elements. The returned array has an element of the substring for each occurence of the substing. |
test() |
The Array Object
| Command | Definition |
|---|---|
concat("foo") |
Will concatonate one array onto another. For example, newarray = array1.concat(array2);
will make a new array of array1 + array2. |
slice(x,y) |
will cut out part of an array from x through y-1 and put them into a new
array. |
join("x") |
will join an array into a string where the elements will be separated by the character(s) x
(such as a comma). |
sort() |
Will sort an array into ANSI order. |
reverse() |
reverses the order of the array. |
The Math Object
| Command | Definition |
|---|---|
abs() |
|
ceil() |
|
floor() |
|
round() |
|
random() |
|
pow() |
The Date Object
| Command | Definition |
|---|