very simple concatenation question

Hi all,

I really can't figure out what I'm doing wrong in a
simple javascript block. I want to parse the letters of a word one by one,
modify each letter, then output the modified set of letters.


... <snip> ...
lower = "hi"
for (i=0;i<=strLen-1;i++)
currChar = lower.charCodeAt(i);
{
resultChar = currChar + 1;
strOutput = String.fromCharCode(resultChar);
totOutput = totOutput + strOutput;
}
displayMessage (totOutput);


any ideas why totOutput only ever shows the very last modified letter
of the string (in this case "j" is the output, when I'd expect it to
be "ij")?

your for loop only increments i.
the block enclosed with braces ({}) is not a loop, and runs only once,
after i has been incremented to strLen.

Your code should be:


... <snip> ...
lower = "hi"
for (i=0;i<=strLen-1;i++)
{
currChar = lower.charCodeAt(i);
{
resultChar = currChar + 1;
strOutput = String.fromCharCode(resultChar);
totOutput = totOutput + strOutput;
}
}
displayMessage (totOutput);

You all rock, thanks so much!