Rails spinoffs - Mar 2008 - Compare array

Hi,

I have an array containing between 1 to 8 characters.  A-H

var myChars =
[''a'',''b'',''c'',''d''];

myChars may vary in 36 different combinations. What is the easiest way
to compare that array with my combinations?

if(myChars.Contains(''a'',''b'') --> Do this;

else
if(myChars.Contains(''a'',''b'',''c'')
--> Do that;

I don''t know if there is a "Contains" method in prototype,
neither I
know if there is a standard method in javascript to solve my problem.
But in any case the solution must be strict, if myChars contains a,b,c
it won''t return true if I compare with a array that conints a,b only.

Notice that I haven''t written any code yet so there is no must to use
an array.

Do you guys know how to do this in a simple way?

Regards
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if(/\b(?:a|b|c)\b/.test(myChars.join('','')){
  //do something
}

since it is strictly characters this will work faster than looping
though items.
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