$(function() {
    function traverse($node, len, maxCount) {
        var reachMaxCount = len > maxCount;
        if (reachMaxCount) {
            $node.hide();
        }
        var $contents = $node.contents();
        for (var i = 0; i < $contents.length; ++i) {
            if (reachMaxCount) {
                $contents.eq(i).hide();
                continue;
            }
            if ($contents[i].nodeType == 3) { // TextNode
                var tmp = len;
                var s = $contents[i].nodeValue;
                len += s.length;
                reachMaxCount = len > maxCount;
                if (reachMaxCount) {
                    $contents[i].nodeValue = s.substring(0, maxCount - tmp);
                }
            }
            else if ($contents[i].nodeType == 1) { // Element
                len = traverse($contents.eq(i), len, maxCount);
            }
        }
        return len;
    }
    $('.post-excerpt').each(function() {
        traverse($(this), 0, 200);
        $(this).after('...');
    });
});

$(function() {
    function traverse($node, len, maxCount) {
        var reachMaxCount = len > maxCount;
        if (reachMaxCount) {
            $node.hide();
        }
        var $contents = $node.contents();
        for (var i = 0; i < $contents.length; ++i) {
            if (reachMaxCount) {
                $contents.eq(i).hide();
                continue;
            }
            if ($contents[i].nodeType == 3) { // TextNode
                var tmp = len;
                var s = $contents[i].nodeValue;
                len += s.length;
                reachMaxCount = len > maxCount;
                if (reachMaxCount) {
                    $contents[i].nodeValue = s.substring(0, maxCount - tmp);
                }
            }
            else if ($contents[i].nodeType == 1) { // Element
                len = traverse($contents.eq(i), len, maxCount);
            }
        }
        return len;
    }
    $('.article-item').find("p").each(function() {
        traverse($(this), 0, 365);
        $(this).append('...');
    });
});

Adjust the style to truncate post index.