博客園markdown顯示行號探索心路歷程

前言

​ 剛剛25分鍾打完了一道樹剖，感覺非常爽，但是覺得代碼沒有行數覺得心里不舒服。沒有行數顯示，感受不到代碼的力量了。於是我就在百度搜索博客園markdown怎樣顯示行號 ，然后找到第一個，按照指示做完了，就多了個目錄功能，然后又瞎搞了半天沒有結果，於是我十分沮喪，打開了第二個打開。這次看起來不錯，直接復制粘貼，但是貌似還是不行。於是又搞了半天，最終我將兩篇文章的代碼結合起來，瞎搞了一通，終於弄好了。作為一位對沒學過css,javascript,看github又看不懂的超級大白菜，只能靠着實踐，看看哪里貌似可以改，改了試試，有時是“哇，出效果啦”，但更多的是“什么鬼，沒有反應”。就這樣，摸爬滾打，最終快要放棄的時候搞出來了，真是沒有激動，只有悲傷，深感菜的真實。

參考博客

第一篇： https://www.cnblogs.com/gzdaijie/p/5187171.html

第二篇： https://www.cnblogs.com/enjoy233/p/10410089.html

具體步驟

其實貌似並沒有想象的那么難，只是因為我什么都不懂，而各位博主懂的太多，所以導致溝通障礙，接下來我會以小白的身份分享。

1. 在博客園設置默認編輯器為mark：點擊你的博客園首頁上的管理-->選項-->看到默認編輯器，勾選markdown

按順序提供幾張圖片以供參考：

2. 點擊選項左邊的設置，在頁面定制CSS代碼中直接復制粘貼下面的代碼：

@font-face {
  font-family: octicons-anchor;
  src: url(data:font/woff;charset=utf-8;base64,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) format('woff');
}
#cnblogs_post_body {
  margin: 20px 0;
}

.cnblogs-markdown {
  -ms-text-size-adjust: 100%;
  -webkit-text-size-adjust: 100%;
  color: #333;
  overflow: hidden;
  font-family: "Helvetica Neue", Helvetica, "Segoe UI", Arial, freesans, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  word-wrap: break-word;
}

.cnblogs-markdown a {
  background: transparent;
}

.cnblogs-markdown a:active,
.cnblogs-markdown a:hover {
  outline: 0;
}

.cnblogs-markdown strong {
  font-weight: bold;
}

.cnblogs-markdown h1 {
  font-size: 2em;
  margin: 0.67em 0;
}

.cnblogs-markdown img {
  border: 0;
}

.cnblogs-markdown hr {
  box-sizing: content-box;
  height: 0;
}

.cnblogs-markdown pre {
  overflow: auto;
}

.cnblogs-markdown code,
.cnblogs-markdown kbd,
.cnblogs-markdown pre {
  font-family: monospace, monospace;
  font-size: 1em;
}

.cnblogs-markdown input {
  color: inherit;
  font: inherit;
  margin: 0;
}

.cnblogs-markdown html input[disabled] {
  cursor: default;
}

.cnblogs-markdown input {
  line-height: normal;
}

.cnblogs-markdown input[type="checkbox"] {
  box-sizing: border-box;
  padding: 0;
}

.cnblogs-markdown table {
  border-collapse: collapse;
  border-spacing: 0;
}

.cnblogs-markdown td,
.cnblogs-markdown th {
  padding: 0;
}

.cnblogs-markdown * {
  box-sizing: border-box;
}

.cnblogs-markdown input {
  font: 13px/1.4 Helvetica, arial, nimbussansl, liberationsans, freesans, clean, sans-serif, "Segoe UI Emoji", "Segoe UI Symbol";
}

.cnblogs-markdown a {
  color: #4183c4;
  text-decoration: none;
}

.cnblogs-markdown a:hover,
.cnblogs-markdown a:active {
  text-decoration: underline;
}

.cnblogs-markdown hr {
  height: 0;
  margin: 15px 0;
  overflow: hidden;
  background: transparent;
  border: 0;
  border-bottom: 1px solid #ddd;
}

.cnblogs-markdown hr:before {
  display: table;
  content: "";
}

.cnblogs-markdown hr:after {
  display: table;
  clear: both;
  content: "";
}

.cnblogs-markdown h1,
.cnblogs-markdown h2,
.cnblogs-markdown h3,
.cnblogs-markdown h4,
.cnblogs-markdown h5,
.cnblogs-markdown h6 {
  margin-top: 15px;
  margin-bottom: 10px;
  line-height: 1.1;
}

.cnblogs-markdown blockquote {
  margin: 0;
}

.cnblogs-markdown ul,
.cnblogs-markdown ol {
  padding: 0;
  margin-top: 0;
  margin-bottom: 0;
}

.cnblogs-markdown ol ol,
.cnblogs-markdown ul ol {
  list-style-type: lower-roman;
}

.cnblogs-markdown ul ul ol,
.cnblogs-markdown ul ol ol,
.cnblogs-markdown ol ul ol,
.cnblogs-markdown ol ol ol {
  list-style-type: lower-alpha;
}

.cnblogs-markdown dd {
  margin-left: 0;
}

.cnblogs-markdown code {
  font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace;
  font-size: 12px;
}

.cnblogs-markdown pre {
  margin-top: 0;
  margin-bottom: 0;
  font: 12px Consolas, "Liberation Mono", Menlo, Courier, monospace;
}

.cnblogs-markdown .octicon {
  font: normal normal normal 16px/1 octicons-anchor;
  display: inline-block;
  text-decoration: none;
  text-rendering: auto;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

.cnblogs-markdown .octicon-link:before {
  content: '\f05c';
}

.cnblogs-markdown>*:first-child {
  margin-top: 0 !important;
}

.cnblogs-markdown>*:last-child {
  margin-bottom: 0 !important;
}

.cnblogs-markdown a:not(:link):not(:visited) {
  color: inherit;
  text-decoration: none;
}

.cnblogs-markdown .anchor {
  position: absolute;
  top: 0;
  left: 0;
  display: block;
  padding-right: 6px;
  padding-left: 30px;
  margin-left: -30px;
}

.cnblogs-markdown .anchor:focus {
  outline: none;
}

.cnblogs-markdown h1,
.cnblogs-markdown h2,
.cnblogs-markdown h3,
.cnblogs-markdown h4,
.cnblogs-markdown h5,
.cnblogs-markdown h6 {
  position: relative;
  margin-top: 1em;
  margin-bottom: 16px;
  font-weight: bold;
  line-height: 1.4;
}

.cnblogs-markdown h1 .octicon-link,
.cnblogs-markdown h2 .octicon-link,
.cnblogs-markdown h3 .octicon-link,
.cnblogs-markdown h4 .octicon-link,
.cnblogs-markdown h5 .octicon-link,
.cnblogs-markdown h6 .octicon-link {
  display: none;
  color: #000;
  vertical-align: middle;
}

.cnblogs-markdown h1:hover .anchor,
.cnblogs-markdown h2:hover .anchor,
.cnblogs-markdown h3:hover .anchor,
.cnblogs-markdown h4:hover .anchor,
.cnblogs-markdown h5:hover .anchor,
.cnblogs-markdown h6:hover .anchor {
  padding-left: 8px;
  margin-left: -30px;
  text-decoration: none;
}

.cnblogs-markdown h1:hover .anchor .octicon-link,
.cnblogs-markdown h2:hover .anchor .octicon-link,
.cnblogs-markdown h3:hover .anchor .octicon-link,
.cnblogs-markdown h4:hover .anchor .octicon-link,
.cnblogs-markdown h5:hover .anchor .octicon-link,
.cnblogs-markdown h6:hover .anchor .octicon-link {
  display: inline-block;
}

.cnblogs-markdown h1 {
  padding-bottom: 0.3em;
  font-size: 2.25em !important;
  line-height: 1.2;
  border-bottom: 1px solid #eee;
}

.cnblogs-markdown h1 .anchor {
  line-height: 1;
}

.cnblogs-markdown h2 {
  padding-bottom: 0.3em;
  font-size: 1.75em !important;
  line-height: 1.225;
  border-bottom: 1px solid #eee;
}

.cnblogs-markdown h2 .anchor {
  line-height: 1;
}

.cnblogs-markdown h3 {
  font-size: 1.5em!important;
  line-height: 1.43;
}

.cnblogs-markdown h3 .anchor {
  line-height: 1.2;
}

.cnblogs-markdown h4 {
  font-size: 1.25em !important; 
}

.cnblogs-markdown h4 .anchor {
  line-height: 1.2;
}

.cnblogs-markdown h5 {
  font-size: 1em !important;
}

.cnblogs-markdown h5 .anchor {
  line-height: 1.1;
}

.cnblogs-markdown h6 {
  font-size: 1em !important;
  color: #777;
}

.cnblogs-markdown h6 .anchor {
  line-height: 1.1;
}

.cnblogs-markdown p,
.cnblogs-markdown blockquote,
.cnblogs-markdown ul,
.cnblogs-markdown ol,
.cnblogs-markdown dl,
.cnblogs-markdown table,
.cnblogs-markdown pre {
  margin-top: 0;
  margin-bottom: 16px;
}

.cnblogs-markdown hr {
  height: 4px;
  padding: 0;
  margin: 16px 0;
  background-color: #e7e7e7;
  border: 0 none;
}

.cnblogs-markdown ul,
.cnblogs-markdown ol {
  padding-left: 2em;
  font-size: 14px;
}

.cnblogs-markdown ul ul,
.cnblogs-markdown ul ol,
.cnblogs-markdown ol ol,
.cnblogs-markdown ol ul {
  margin-top: 0;
  margin-bottom: 0;
}

.cnblogs-markdown li>p {
  margin-top: 16px;
}

.cnblogs-markdown dl {
  padding: 0;
}

.cnblogs-markdown dl dt {
  padding: 0;
  margin-top: 16px;
  font-size: 1em;
  font-style: italic;
  font-weight: bold;
}

.cnblogs-markdown dl dd {
  padding: 0 16px;
  margin-bottom: 16px;
}

.cnblogs-markdown blockquote {
  color: #333;
  padding: 10px 15px;
  border: none;
  border-left: 10px solid #D6DBDF;
}

.cnblogs-markdown blockquote>:first-child {
  margin-top: 0;
}

.cnblogs-markdown blockquote>:last-child {
  margin-bottom: 0;
}

.cnblogs-markdown table {
  display: block;
  width: 100%;
  overflow: auto;
  word-break: normal;
  word-break: keep-all;
}

.cnblogs-markdown table th {
  font-weight: bold;
}

.cnblogs-markdown table th,
.cnblogs-markdown table td {
  padding: 6px 13px;
  border: 1px solid #ddd;
}

.cnblogs-markdown table tr {
  background-color: #fff;
  border-top: 1px solid #ccc;
}

.cnblogs-markdown table tr:nth-child(2n) {
  background-color: #f8f8f8;
}

.cnblogs-markdown img {
  max-width: 100%;
  box-sizing: border-box;
}

.cnblogs-markdown code {
  padding: 0;
  padding-top: 0.2em;
  padding-bottom: 0.2em;
  margin: 0;
  font-size: 85%;
  background-color: rgba(0,0,0,0.04);
  border-radius: 3px;
  border: none !important;
  display: inline-block;
}

.cnblogs-markdown code:before,
.cnblogs-markdown code:after {
  letter-spacing: -0.2em;
  content: "\00a0";
}

/*only for syntaxhighlighter */
/*--start--*/
.cnblogs-markdown .syntaxhighlighter table td.code {
  width:95% !important; 
}

.cnblogs-markdown .syntaxhighlighter code {
  font-family: "Consolas","Bitstream Vera Sans Mono","Courier New",Courier,monospace!important;
  padding: 0 !important;
  border-radius: 0 !important;
  background-color: transparent !important;
}

.cnblogs-markdown .syntaxhighlighter code:before,
.cnblogs-markdown .syntaxhighlighter code:before {
  letter-spacing: -0.5em;
}
/*--end--*/

.cnblogs-markdown pre>code {
  padding: 0;
  margin: 0;
  font-size: 100%;
  word-break: normal;
  white-space: pre;
  background: transparent;
  border: 0;
}

.cnblogs-markdown .highlight {
  margin-bottom: 16px;
}

.cnblogs-markdown .highlight pre,
.cnblogs-markdown pre {
  padding: 16px;
  overflow: auto;
  font-size: 85%;
  line-height: 1.45;
  background-color: #f7f7f7;
  border-radius: 3px;
}

.cnblogs-markdown .highlight pre {
  margin-bottom: 0;
  word-break: normal;
}

.cnblogs-markdown pre {
  word-wrap: normal;
}

.cnblogs-markdown pre code {
  display: inline;
  max-width: initial;
  padding: 0;
  margin: 0;
  overflow: initial;
  line-height: inherit;
  word-wrap: normal;
  background-color: transparent;
  border: 0;
}

.cnblogs-markdown pre code:before,
.cnblogs-markdown pre code:after {
  content: normal;
}

.cnblogs-markdown kbd {
  display: inline-block;
  padding: 3px 5px;
  font-size: 11px;
  line-height: 10px;
  color: #555;
  vertical-align: middle;
  background-color: #fcfcfc;
  border: solid 1px #ccc;
  border-bottom-color: #bbb;
  border-radius: 3px;
  box-shadow: inset 0 -1px 0 #bbb;
}

.cnblogs-markdown .pl-c {
  color: #969896;
}

.cnblogs-markdown .pl-c1,
.cnblogs-markdown .pl-mdh,
.cnblogs-markdown .pl-mm,
.cnblogs-markdown .pl-mp,
.cnblogs-markdown .pl-mr,
.cnblogs-markdown .pl-s1 .pl-v,
.cnblogs-markdown .pl-s3,
.cnblogs-markdown .pl-sc,
.cnblogs-markdown .pl-sv {
  color: #0086b3;
}

.cnblogs-markdown .pl-e,
.cnblogs-markdown .pl-en {
  color: #795da3;
}

.cnblogs-markdown .pl-s1 .pl-s2,
.cnblogs-markdown .pl-smi,
.cnblogs-markdown .pl-smp,
.cnblogs-markdown .pl-stj,
.cnblogs-markdown .pl-vo,
.cnblogs-markdown .pl-vpf {
  color: #333;
}

.cnblogs-markdown .pl-ent {
  color: #63a35c;
}

.cnblogs-markdown .pl-k,
.cnblogs-markdown .pl-s,
.cnblogs-markdown .pl-st {
  color: #a71d5d;
}

.cnblogs-markdown .pl-pds,
.cnblogs-markdown .pl-s1,
.cnblogs-markdown .pl-s1 .pl-pse .pl-s2,
.cnblogs-markdown .pl-sr,
.cnblogs-markdown .pl-sr .pl-cce,
.cnblogs-markdown .pl-sr .pl-sra,
.cnblogs-markdown .pl-sr .pl-sre,
.cnblogs-markdown .pl-src {
  color: #183691;
}

.cnblogs-markdown .pl-v {
  color: #ed6a43;
}

.cnblogs-markdown .pl-id {
  color: #b52a1d;
}

.cnblogs-markdown .pl-ii {
  background-color: #b52a1d;
  color: #f8f8f8;
}

.cnblogs-markdown .pl-sr .pl-cce {
  color: #63a35c;
  font-weight: bold;
}

.cnblogs-markdown .pl-ml {
  color: #693a17;
}

.cnblogs-markdown .pl-mh,
.cnblogs-markdown .pl-mh .pl-en,
.cnblogs-markdown .pl-ms {
  color: #1d3e81;
  font-weight: bold;
}

.cnblogs-markdown .pl-mq {
  color: #008080;
}

.cnblogs-markdown .pl-mi {
  color: #333;
  font-style: italic;
}

.cnblogs-markdown .pl-mb {
  color: #333;
  font-weight: bold;
}

.cnblogs-markdown .pl-md,
.cnblogs-markdown .pl-mdhf {
  background-color: #ffecec;
  color: #bd2c00;
}
.cnblogs-markdown .pl-mdht,
.cnblogs-markdown .pl-mi1 {
  background-color: #eaffea;
  color: #55a532;
}

.cnblogs-markdown .pl-mdr {
  color: #795da3;
  font-weight: bold;
}

.cnblogs-markdown .pl-mo {
  color: #1d3e81;
}

.cnblogs-markdown kbd {
  display: inline-block;
  padding: 3px 5px;
  font: 11px Consolas, "Liberation Mono", Menlo, Courier, monospace;
  line-height: 10px;
  color: #555;
  vertical-align: middle;
  background-color: #fcfcfc;
  border: solid 1px #ccc;
  border-bottom-color: #bbb;
  border-radius: 3px;
  box-shadow: inset 0 -1px 0 #bbb;
  padding-top: 20px;
}

.cnblogs-markdown .task-list-item {
  list-style-type: none;
}

.cnblogs-markdown .task-list-item+.task-list-item {
  margin-top: 3px;
}

.cnblogs-markdown .task-list-item input {
  margin: 0 0.35em 0.25em -1.6em;
  vertical-align: middle;
}

.cnblogs-markdown :checked+.radio-label {
  z-index: 1;
  position: relative;
  border-color: #4183c4;
}

.cnblogs-markdown .hljs {
   border: none !important;
}
#cnblogs_post_body th, #cnblogs_post_body td, .cnblogs-post-body th, .cnblogs-post-body td {
   border: none !important;
   padding: 0;
}
 
.postCon {
   font-size: 14px;
}
 
.cnblogs-markdown .hljs, .cnblogs-post-body .hljs {
   font-family: "Consolas",sans-serif !important;
   font-size: 13px! important;
}
 
.cnblogs-markdown .hljs, .cnblogs-post-body .hljs {
   font-family: "Courier New",sans-serif!important;
   font-size: 13px!important;
   line-height: 1.5!important;
   padding: 5px!important;
}
 
#cnblogs_post_body table, .cnblogs-post-body table {
   border: none !important;
   border-collapse: collapse;
   word-break: break-word;
}

3. 在頁腳Html代碼插入下面的代碼

<link rel="stylesheet"
      href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.15.6/styles/default.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.15.6/highlight.min.js"></script>

<script src="//cdn.jsdelivr.net/npm/highlightjs-line-numbers.js@2.7.0/dist/highlightjs-line-numbers.min.js"></script>
	
<script>
$(function () {
    /* markdown模式下為代碼加入行號, 調用插件highlightjs-line-numbers.js */
    hljs.initHighlightingOnLoad();	
    hljs.initLineNumbersOnLoad();
});
</script>

<script type="text/javascript">  
    var setMyBlog = {
        setCopyright: function() {
            //設置版權信息，轉載出處自動根據頁面url生成
            var info_str = '<p>作者：<a target="_blank">@gzdaijie</a><br>'+
                '本文為作者原創，轉載請注明出處：<a class="uri"></a></p><hr></hr>', 
                info = $(info_str),
                info_a = info.find("a"),
                url = window.location.href;
            $(info_a[0]).attr("href","https://github.com/gzdaijie");
            $(info_a[1]).attr("href",url).text(url);
            $("#cnblogs_post_body").prepend(info);
        },
        setCodeRow: function(){
            // 代碼行號顯示
            var pre = $("pre.sourceCode"); //選中需要更改的部分
            if(pre && pre.length){
                pre.each(function() {
                    var item = $(this);
                    var lang = item.attr("class").split(" ")[1]; //判斷高亮的語言
                    item.html(item.html().replace(/<[^>]+>/g,"")); //將<pre>標簽中的html標簽去掉
                    item.removeClass().addClass("brush: " + lang +";"); //根據語言添加筆刷
                    SyntaxHighlighter.all();
                })
            }
        },
        setAtarget: function() {
            // 博客內的鏈接在新窗口打開
            $("#cnblogs_post_body a").each(function(){
                this.target = "_blank";
            }) 
        },
        setContent: function() {
            // 根據h2、h3標簽自動生成目錄
            var captions_ori = $("#cnblogs_post_body h2"),
                captions = $("#cnblogs_post_body h2,#cnblogs_post_body h3").clone(),
                content = $("<blockquote><h4>目錄</h4></blockquote>");
            $("#cnblogs_post_body").prepend(content.append(captions));
            var index = -1;
            captions.replaceWith(function(){
                var self = this;
                if(self.tagName == "H2" || self.tagName == "h2"){
                    // 設置點擊目錄跳轉
                    index += 1;
                    $('<a name="' + '_caption_' + index + '"></a>').insertBefore(captions_ori[index]); 
                    return '<a href="#_caption_' + index + '"><strong>' + self.innerHTML + '</strong></a><br>';
                } else {
                    return self.innerHTML + "<br>";
                }
            });
        },
        runAll: function() {
            /* 運行所有方法
             * setAtarget() 博客園內標簽新窗口打開
             * setContent() 設置目錄
             * setCopyright() 設置版權信息
             * setCodeRow() 代碼行號顯示
             */ 
            this.setAtarget(); 
            this.setContent();
            //這里我把設置版權的功能給停了，你只需要吧雙斜杠去掉即可
            //this.setCopyright();
            this.setCodeRow();
        }
    }
    setMyBlog.runAll();
</script>

總結

因為我也是直接裁剪的別人的代碼，所以我也不是很懂，但是其實很多地方都有解釋說明，你可以自己嘗試更改。但是如果你只是追求結果，這樣大概就能滿足你了。