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Letterboxd Average Rating

Adds average rating of film to film pages

目前為 2014-08-28 提交的版本，檢視 最新版本。

// ==UserScript==
// @name        Letterboxd Average Rating
// @namespace   https://github.com/rcalderong/userscripts
// @description Adds average rating of film to film pages
// @copyright   2014, Ramón Calderón (http://rcalderon.es)
// @homepageURL https://github.com/rcalderong/userscripts
// @supportURL  https://github.com/rcalderong/userscripts/issues
// @icon        https://raw.githubusercontent.com/rcalderong/userscripts/master/img/letterboxd_icon.png
// @license     GPLv3; http://www.gnu.org/licenses/gpl.html
// @version     1.1
// @include     /^http:\/\/(www.)?letterboxd.com\/film\/[\w|\-]+\/$/
// @grant       none
// ==/UserScript==

(function () {
    var newElt,         // Element with average rating to be inserted in page
        newInnerElt,    // Element with average rating to be inserted in page
        rating5,        // Average rating of the film in a five-star scale
        rating10,       // Average rating of the film in a one-to-ten scale
        ratingsElt;     // Page element of the ratings section

    // Get average rating from page metadata
    ratingsElt = document.querySelector(".ratings-histogram-chart");
    rating10 = ratingsElt.querySelector("span meta").getAttribute("content");
    rating5 = (rating10 / 2).toFixed(1);            

    // Create element to be inserted in page
    newElt = document.createElement("a");
    newElt.className = "rating-green tooltip";
    newElt.setAttribute("href",
            ratingsElt.querySelector("h3 a").getAttribute("href"));
    newElt.setAttribute("title", rating5.replace(/\./, ",") + " stars");
    newElt.setAttribute("style", "position: absolute; top: 0; left: 72px;");
    newInnerElt = document.createElement("span");
    newInnerElt.className = "rating rated-" + Math.round(rating10);
    newElt.appendChild(newInnerElt);

    // Insert element in page
    ratingsElt.insertBefore(newElt, ratingsElt.children[1]);
}());