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User:YFdyh000/category item description.js

维基百科，自由的百科全书
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/*
 * 本JS在分类页面上工作，
 * 将该分类下的条目加上一句话的描述，该描述取自条目正文第一段第一句。
 * 描述长度已限制为32个字，外用small标签包裹（字体会显得小一点）。
 * TODO: 更新以上描述和整理代码。
 * mw.loader.load('/w/index.php?title=User:YFdyh000/category_item_description.js&action=raw&ctype=text/javascript');
 */

(function () {
    //console.log(isCategory);
    
    if (mw.config.get('wgNamespaceNumber') != 14) { //14是分类。https://www.mediawiki.org/wiki/Manual:Namespace
        //console.log("停止运行");
        document.execCommand("stop");
        return 'This is not an error. This is just to abort javascript';
    }
    
    
    $(".mw-category-group ul li a").each(function () {
        var $node = $(this);
        var pageName = $node.attr("href");
        pageName = pageName.substring(pageName.indexOf("/wiki/") + 6, pageName.length);
        //console.log(pageName);
        getArticleDescription(pageName, $node);
    });
    }() );
    
    function getArticleDescription(pageName, $node) {
        $.ajax({
            url: mw.config.get('wgScriptPath') + "/api.php?action=query&prop=extracts&exintro&format=json&converttitles&titles=" + pageName + "&variant="+mw.config.get('wgUserVariant'),
            //async: false,
            success: function (data) {
                const showNameOnly = true; // 仅显示转换后的条目名
                const hideNoDiff = true; // 与条目名无差异则不显示

                //console.log(pageName);
    
                //if (data.query.converted) {
                //    console.log(data.query.converted);
                //}
                //console.log(data);
    
                for (key in data.query.pages) {
                    //console.log(key);
                    data = data.query.pages[key];
                    break;
                }
                //console.log(data);
                //console.log(data.title);
                pageName = data.title;//输入的pageName可能是简体，但实际上页面名可能是繁体，需要url上converttitles来转换。
    
                var content = data.extract;
    
                //console.log(content);
    
                //取第一段...
                var i = content.indexOf("<p>"); //正常段落的p标签是没有 class="xxx"之类的属性的。
                var j = content.indexOf("</p>", i);
                if (i == -1 || j == -1) {
                    var e = "条目" + pageName + "的正文里没有段落";
    
                    return;
                    console.log(e + "：" + content);
                    throw new Error(e);
                }
                //if (i > j)
                //    throw new Error("条目" + pageName + "的正文p标签不正常");
    
                var firstParagraph = "<span>" + content.substring(i + 3, j) + "</span>";
                //console.log(firstParagraph);
                var $firstParagraph = $($.parseHTML(firstParagraph));
    
    
                var r = removeName($firstParagraph, showNameOnly);

                if (showNameOnly) {
                    var description = r ? r.text().trim() : "";
                } else {
                    //...的第一句。
                    var description = $firstParagraph.text();
                    i = description.indexOf("。");
                    //console.log(i);
                    if (i > -1) {
                        description = description.substring(0, i);
                        //console.log(description);
                }

                //去除括号。
                description = description.replace(/[\(（].*?[\)）]/g, '');
    
                if (description[0] == "，")
                    description = description.substring(1, description.length);
    
                description = limitDescriptionLength(description, 32);
            }
                if (!(description.length == 0
                    || (hideNoDiff && pageName == description) )) {
                    $node.parent().append("：");
                    $node.parent().append($("<small>" + description + "</small>"));
                }
            }
        });
        return;
    
        $.getJSON("https://wikicn.playgoteam.workers.dev/w/api.php?action=parse&page=" + pageName + "&format=json&section=0&prop=text", function (data) {
            console.log(pageName);
            var content = data.parse.text["*"];
    
            //取第一段...
            var i = content.indexOf("<p>"); //正常段落的p标签是没有 class="xxx"之类的属性的。
            var j = content.indexOf("</p>", i);
            if (i == -1 || j == -1) {
                var e = "条目" + pageName + "的正文里没有段落";
                console.log(e + "：" + content);
                throw new Error(e);
            }
            //if (i > j)
            //    throw new Error("条目" + pageName + "的正文p标签不正常");
    
            var firstParagraph = "<span>" + content.substring(i + 3, j) + "</span>";
            console.log(firstParagraph);
            var $firstParagraph = $($.parseHTML(firstParagraph));
    
    
            removeName($firstParagraph);
    
            //...的第一句。
            var description = $firstParagraph.text();
            i = description.indexOf("。");
            //console.log(i);
            if (i > -1) {
                description = description.substring(0, i);
                //console.log(description);
            }
    
            //去除括号。
            description = description.replace(/[\(（].*?[\)）]/g, '');
    
            if (description[0] == "，")
                description = description.substring(1, description.length);
    
            description = limitDescriptionLength(description, 32);
    
            if (description.length > 0) {
                $node.parent().append("：");
                $node.parent().append($("<small>" + description + "</small>"));
            }
    
    
            //alert(data.length);
        });
        //document.execCommand("stop");
    }
    
    function removeName($paragraph, reverse) {
        //console.log($paragraph);
        var node = $paragraph.contents()[0];
        //console.log(node.nodeType);
        if (node.nodeType == 1) //ELEMENT_NODE
        {
            var $pageName = $(node);
            if ($pageName.prop("tagName") == "B" && !reverse)
                $pageName.detach();
            else if ($pageName.prop("tagName") == "B" && reverse)
                return $pageName
                //$pageName.detach();
        }
        else if (node.nodeType == 3) {
            //console.log(node.data);
            if (node.data == "《" && !reverse) {
                $(node).detach();
                removeName($paragraph, reverse);
                node = $paragraph.contents()[0];
                if (node.nodeType == 3 && node.data[0] == '》') {
                    node.data = node.data.substring(1, node.data.length);
                    //console.log(node);
                }
            }
            //TODO
        }
    }
    
    function limitDescriptionLength(description, length) {
        if (description.length > length)
            return description.substring(0, length) + "…";
        else
            return description;
    }
    
    //[[分类:维基脚本]] 复制後请删除此列避免分类
检索自“https://wikicn.playgoteam.workers.dev/w/index.php?title=User:YFdyh000/category_item_description.js&oldid=78536818”