How can I compare arbitrary version numbers?

Question

Does anyone have code to compare two version numbers in JavaScript? I just want simple version comparisons (e.g. \"1.0\" vs \"1.5.6\"), and it shou

Answer 1

function compareVersion(a, b) {
    return compareVersionRecursive(a.split("."), b.split("."));
}

function compareVersionRecursive(a, b) {
    if (a.length == 0) {
        a = [0];
    }
    if (b.length == 0) {
        b = [0];
    }
    if (a[0] != b[0] || (a.length == 1 && b.length == 1)) {
        return a[0] - b[0];
    }
    return compareVersionRecursive(a.slice(1), b.slice(1));
}