Sort Stack Exchange tags by relevance

se-sort-tags-by-relevance.js

var $c = $('#h-related-tags').parent().contents(),
    s = null,
    arr = [];

$c.each(function(i, e) {
    var $sl, counts;

    if (e.tagName === 'A') {
        s = i;
    } else if (e.tagName == 'BR') {
        $sl = $c.slice(s, i + 1);
        counts = $.makeArray(
            $sl.find('.item-multiplier-count').map(function() {
                return parseInt(this.textContent, 10);
            })
        );
        
        counts = [1, 1].concat(counts).splice(counts.length, 2);

        arr.push(
            [$sl].concat(
                counts[0] / counts[1]
            )
        );
    }
});

arr.sort(function(a, b) {
    return b[1] - a[1];
});

arr.forEach(function(e, i) {
    $('#h-related-tags').parent().append(e[0]);
});