Sort version-dotted number strings in Javascript?

Question

I have an array of following strings:

[\'5.5.1\', \'4.21.0\', \'4.22.0\', \'6.1.0\', \'5.1.0\', \'4.5.0\'] 

...etc.

I need a soluti

Answer 1

Inspired from the accepted answer, but ECMA5-compatible, and with regular string padding (see my comments on the answer):

function sortCallback(a, b) {

    function padParts(version) {
        return version
            .split('.')
            .map(function (part) {
                return '00000000'.substr(0, 8 - part.length) + part;
            })
            .join('.');
    }

    a = padParts(a);
    b = padParts(b);

    return a.localeCompare(b);
}

Usage:

['1.1', '1.0'].sort(sortCallback);