Function:  escape
escape(string)
 
The top-level function, escape, encodes the string that is contained in the string argument to make it portable. A string is considered portable if it can be transmitted across any network to any computer that supports ASCII characters.
 
To make a string portable, characters other than the following 69 ASCII characters must be encoded:
 
ABCDEFGHIJKLMNOPQRSTUVWXYZ
abcdefghijklmnopqrstuvwxyz
1234567890
@*-_+./
 
All other characters are converted either to their two digit (%xx) or four digit (%uxxxx) hexadecimal equivalent (refered to as the character's "hexadecimal escape sequence"). For example, a blank space will be represented by %20 and a semicolon by %3B. (Note that the hexadecimal numbers are: 0123456789ABCDEF).
 
Use the unescape function to decode an encoded sequence that was created using escape.
 
Code:
document.write(escape("Miss Piggy."))
 
Output:
Miss%20Piggy.
 
Code:
document.write(escape("!@#$%^&*()_+|"))
 
Output:
%21@%23%24%25%5E%26*%28%29_+%7C

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