Replace more than one thing in a string

Question

I'm trying to make some kind of secret code language for kids with an online translator. However, I stumbled upon a problem. I replace the letters of the word from A to Z. But if I have a word like "hi" and I replace the letter 'h' with an 'i', the code will see "ii" when it arrives at the 'h'. Naturally, it will replace both i's with the connected letter. Is there a way I can stop this from happening?

Code example:

var tekst, tevertalen;

tevertalen = prompt("Geef je boodschap in: ",'Default');

...
tekst = tekst.replace("P","S");
tekst = tekst.replace("Q","T");
tekst = tekst.replace("R","A");
...

Thanks in advance!

Duplicate http://stackoverflow.com/questions/10947046/jquery-find-and-replace-multiple-items — Akshay Joy, May 25 '13 at 18:26
Downvoting for tagging this as "jQuery". People *really* need to learn the difference between jQuery and JavaScript. One's a library, one's a language. Not at all the same. — mpen, May 25 '13 at 18:31
Thanks, I took a look at these topics and I understand what they do now. I think I'll be using Blender's solution though. — M. Boeckx, May 25 '13 at 18:32

score 3 · Accepted Answer · answered May 25 '13 at 18:27

3

Iterate over the string character-by-character and use a lookup table:

var mapping = {
    'P': 'S',
    'Q': 'T',
    'R': 'A',
    ...
};

var encoded = '';
var plaintext = 'HI';

for (var i = 0; i < plaintext.length; i++) {
    encoded += mapping[plaintext.charAt(i)];
}

answered May 25 '13 at 18:27

Blender

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Thanks! This was the kind of thing I was searching for! – M. Boeckx May 25 '13 at 18:33

Replace more than one thing in a string

1 Answers1