Markdown可预览编辑器 —— Codemirror+Marked+Prism

半兽人 发表于: 2018-12-08   最后更新时间: 2018-12-08  

插件

  • 文本编辑: Codemirror
  • Markdown解析: Marked
  • Markdown Css: Github-markdown-css
  • 代码高亮: prismjs

效果预览

screenshot

代码

除了插件那些的js和css文件,就只有三个自己要写的。主页index.html,样式style.css,还有一个初始化 codemirror 和 marked 配置的 main.js。

index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Markdown</title>
  <link rel="stylesheet" href="codemirror/lib/codemirror.css">
  <link rel="stylesheet" href="codemirror/theme/material.css">
  <link rel="stylesheet" href="codemirror/addon/dialog/dialog.css">
  <link rel="stylesheet" href="stylesheets/style.css">
  <link rel="stylesheet" href="stylesheets/github-markdown.css">
  <link rel="stylesheet" href="stylesheets/prism.css">
</head>
<body>
  <div class="editor-wrap">
    <textarea name="editor" id="editor" cols="30" rows="10"></textarea>
  </div>
  <div class="preview-wrap">
    <div class="markdown-body"></div>
  </div>

  <script src="javascripts/jquery.min.js"></script>
  <script src="javascripts/marked.min.js"></script>
  <script src="codemirror/lib/codemirror.js"></script>
  <script src="codemirror/addon/edit/continuelist.js"></script>
  <script src="codemirror/addon/edit/matchbrackets.js"></script>
  <script src="codemirror/addon/edit/closebrackets.js"></script>
  <script src="codemirror/mode/markdown/markdown.js"></script>
  <script src="codemirror/keymap/sublime.js"></script>
  <script src="codemirror/addon/search/search.js"></script>
  <script src="codemirror/addon/search/searchcursor.js"></script>
  <script src="codemirror/addon/dialog/dialog.js"></script>
  <script src="codemirror/addon/comment/comment.js"></script>
  <script src="codemirror/addon/wrap/hardwrap.js"></script>
  <script src="javascripts/prism.js"></script>
  <script src="javascripts/main.js"></script>
</body>
</html>

main.js

(function() {
  $(function() {
    // marked
    var markedRender = new marked.Renderer();
    marked.setOptions({
      renderer: markedRender,
      gfm: true,
      tables: true,
      breaks: true,  // '>' 换行,回车换成 <br>
      pedantic: false,
      sanitize: true,
      smartLists: true,
      smartypants: false
    });

    // codemirror editor
    var editor = CodeMirror.fromTextArea($('#editor').get(0), {
      mode: 'markdown',
      lineNumbers: true,
      autoCloseBrackets: true,
      matchBrackets: true,
      showCursorWhenSelecting: true,
      lineWrapping: true,  // 长句子折行
      theme: "material",
      keyMap: 'sublime',
      extraKeys: {"Enter": "newlineAndIndentContinueMarkdownList"}
    });
    editor.on('change', editorOnHandler);
  });

  function editorOnHandler(cm, co) {
    $('.markdown-body').html(marked(cm.getValue()));
    $('.markdown-body pre code').each(function(i, block) {
      Prism.highlightElement(block);
    });
  }
})();

style.css

html,
body {
  margin: 0px;
  padding: 0px;
  height: 100%;
}

.editor-wrap {
  float: left;
  width: 50%;
  height: 100%;
  overflow: auto;
}
.editor-wrap .CodeMirror {
  font-size: 18px;
  height: 100%;
}

.preview-wrap {
  float: left;
  width: 50%;
  height: 100%;
  overflow: auto;
}
.preview-wrap .markdown-body {
  box-sizing: border-box;
  width: 100%;
  max-width: 980px;
  padding: 45px;
  font-size: 18px;
}
.preview-wrap .markdown-body ul > li {
  list-style-type: disc;
}
.preview-wrap .markdown-body ol > li {
  list-style-type: lower-roman;
}

完整代码: codemirror-markdown - Github



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