Create an array of characters from specified range

Question

I read some code where someone did this in Ruby:

puts (\'A\'..\'Z\').to_a.join(\',\')

output:

A,B,C,D,E,F,G,H,I,J,K,L,M,N,O         


        

Answer 1

Take a look at the answer from kannebec for a similar question.

Does JavaScript have a method like "range()" to generate an array based on supplied bounds?

If you don't want to add an own function, but in one line:

var abc = 
(function(){var output = []; for(var i='A'.charCodeAt(0); i <= 'Z'.charCodeAt(0); i++)
    output.push(String.fromCharCode(i)); return output;})().join(',');