jQuery を使わないはてなブログ用タグクラウド表示

gistfile1.txt

<script>
    !function () {
        var range = 11, base = 90;
        var data = [];
        var list = document.querySelectorAll(".hatena-module-category ul li a");
        for (var i = 0; i < list.length; i++) {
            data.push(parseInt(list[i].innerHTML.match(/\((\d+)\)/)[1]));
        }
        var min = Math.min.apply(null, data), max = Math.max.apply(null, data);
        var sqrtMin = Math.sqrt(min), sqrtMax = Math.sqrt(max);
        var factor = range / (sqrtMax - sqrtMin);
        for (var i = 0; i < list.length; i++) {
            var count = data[i];
            var level = parseInt((Math.sqrt(count) - sqrtMin) * factor);

            var elem = list[i];
            var text = elem.innerHTML.replace(/^\s+|\s+$/g, "");

            elem.style.fontSize = (level * 10 + base) + "%";

            elem.innerHTML = text.replace(/\([^\(\s +]+\)/, "").replace(/^\s+|\s+$/g, "");
            elem.title = text;
        }
    }();
</script>