Question

197

rated 0 times [ 199] [ 2] / answers: 1 / hits: 34724 / 12 Years ago, wed, may 23, 2012, 12:00:00

I've been trying to figure out how to map a set of characters in a string to another set similar to the tr function in Perl.

the tr (transliteration) function in Perl maps characters one to one, so

     data =~ tr|-_|+/|;

would map

     - => + and _ => /

How can this be done efficiently in JavaScript?

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answered 12 Years ago zachariaho · Accepted Answer

There isn't a built-in equivalent, but you can get close to one with replace:

data = data.replace(/[-_]/g, function (m) {

    return {

        '-': '+',

        '_': '/'

    }[m];

});