9.14. Converting Between Strings and Unicode or ASCII
You want to convert between characters and their corresponding Unicode code point (a.k.a. character codes) or ASCII codes.
String.charCodeAt( ) and
String.fromCharCode( ) methods.
You can use
fromCharCode( ) to
characters that you cannot enter into your
Flash document directly. The method is a static method, which means
that it is invoked from the top-level String
object instead of from a string instance. For values less than 128,
fromCharCode( ) essentially converts a numeric
ASCII code to its equivalent character.
/* Outputs: New paragraph: ¶ Cents: ¢ Name: Joey */ trace("New paragraph: " + String.fromCharCode(182)); trace("Cents: " + String.fromCharCode(162)); trace("Name: " + String.fromCharCode(74, 111, 101, 121));
You can use the
charCodeAt( ) method to retrieve
the code point of the character at a particular index of a string.
For characters whose Unicode code point is less than 128,
charCodeAt( ) essentially converts a character
to its equivalent ASCII code.
myString = "abcd"; // Outputs the code point, 97, of the first character, a trace(myString.charCodeAt(0));
fromCharCode( ) method is an alternative to
using Unicode escape sequences to display special characters.
However, you can also use
fromCharCode( ) in
charCodeAt( ) to test for the
existence of special characters:
myString = String.fromCharCode(191) + "Donde es el ba" + String.fromCharCode(241) + "o?"; ...