在Google Blogger中使用Markdown語法

markdownInBlogger.js

<script src="https://cdnjs.cloudflare.com/ajax/libs/showdown/1.6.4/showdown.min.js"></script>
<script>
var converter = new showdown.Converter();
var posts = document.querySelectorAll(".post-body");
//定義要替換的字元
var insteadWords = {
    "&gt;": ">",
    "&lt;": "<",
    "&amp;": "&"
};
//loop每一篇文章
Array.prototype.forEach.call(posts, function(el, i){
  /*有在開頭找到 markdown 字眼才處理，把整個文章取出來替換成 html
   * 從文章取出內容時，應該有某些字元早就被轉換過，但因為是寫 markdown，根本不需要轉
   * 所以再寫一段程式把某些特定的字轉回來，暫時只定義了 3 組
   */
  if(el.innerHTML.indexOf("markdown") <= 1){
    var origin = el.innerHTML;
    origin = origin.replace("markdown","");
    for (var key in insteadWords){
        origin = origin.replace(new RegExp(key,'g'),insteadWords[key]);
    };
    //先把特殊字元轉回來再作 markdown 的轉換
    el.innerHTML = converter.makeHtml(origin);
  }
});

var pres = document.querySelectorAll("pre");
Array.prototype.forEach.call(pres, function(el, i){
  el.classList.add("prettyprint");
});
</script>
<script src="https://cdn.rawgit.com/google/code-prettify/master/loader/run_prettify.js?skin=sunburst"></script>