imdbRate.js

// ==UserScript==
// @name         豆瓣显示IMDb评分&MPAA评级
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       eve8
// @connect      imdb.com
// @grant        GM_xmlhttpRequest
// @require      https://cdn.bootcss.com/jquery/3.2.1/jquery.min.js
// @match        https://movie.douban.com/subject/*
// ==/UserScript==

(async function() {
    'use strict';
    const MPAA = {
        'G': '大众级，任何人都可以观看',
        'PG': '辅导级，该级别电影中的一些内容可能不适合儿童观看。',
        'PG-13': '特别辅导级，建议13岁后儿童观看',
        'R': '限制级，建议17岁以上观看',
        'NC-17': '17岁以下（包括17岁）禁止观看',
        'NR/OR': '未定级',
        'M/X/P': '不准在大院线放映的电影',
    };
    const imdbHtml = `<div class="rating_wrap clearbox" rel="v:rating" style="border-top: 1px solid #eaeaea; padding-top: 15px;">
                    <div class="clearfix">
                        <div class="rating_logo ll">IMDb评分</div>
                    </div>
                    <div class="rating_self clearfix" typeof="v:Rating">
                        <strong class="ll rating_num" property="v:average"></strong>
                        <span property="v:best" content="10.0"></span>
                        <div class="rating_right ">
                            <div class="ll bigstar"></div>
                            <div class="rating_sum">
                                <a href="javascript:;" class="rating_people"><span property="v:votes"></span>人评价</a>
                            </div>
                        </div>
                    </div>
                </div>`;
    const request = options => new Promise((resolve, reject) => {
        if (!(options instanceof Object)) {
            return reject('options is not an object');
        }
        if (!options.url) {
            return reject('url required');
        }
        options = $.extend({
            method: 'GET',
            headers: {
                'User-agent': window.navigator.userAgent,
            },
            onload: function(res) {
                if (200 !== res.status) {
                    // console.log(res);
                    return reject('request error');
                }
                return resolve(res.responseText);
            },
        }, options || {});
        GM_xmlhttpRequest(options);
    });
    try {
        const imdb = $('div#info a[href^=\'http://www.imdb.com/title/\']');
        if (!imdb.length) { return false; }
        const href = imdb.attr('href');
        const rs = await request({ url: href });
        const html = $(rs);
        const mpaaRate = html.find('meta[itemprop="contentRating"]').attr('content');
        const imdbRateing = html.find('span[itemprop="ratingValue"]').text();
        const imdbRateingCount = html.find('span[itemprop="ratingCount"]').text();
        if (mpaaRate) {
            const mpaaText = MPAA[mpaaRate] || '';
            console.log(mpaaText);
            imdb.after(`<br/><span class="pl">MPAA评级:</span> ${mpaaRate}，${mpaaText}`);
        }
        if (imdbRateing && imdbRateingCount) {
            const imdbRate = $(imdbHtml);
            const imdbRateStar = Math.round(imdbRateing) / 2 * 10;
            imdbRate.find('.rating_num').text(imdbRateing).siblings('.rating_right').find('.bigstar').addClass(`bigstar${imdbRateStar}`).next().find('span').text(imdbRateingCount).end();
            $('#interest_sectl').append(imdbRate);
        }
    } catch (e) {
        console.error(e);
    }
})();