Tag

A tag allows users to quickly and easily insert snippets into their posts.

概要

hexo.extend.tag.register(
  name,
  function (args, content) {
    // ...
  },
  options,
);

Two arguments will be passed into the tag function: args and content. args contains the arguments passed into the tag plugin and content is the wrapped content from the tag plugin.

自 Hexo 3 開始，因為新增了非同步渲染功能，而改用 Nunjucks 作為渲染引擎，其行為可能會與過去使用的 Swig 有些許差異。 The behavior may be somewhat different from that in Swig.

Unregister Tags

Use unregister() to replace existing tag plugins with custom functions.

hexo.extend.tag.unregister(name);

Example

const tagFn = (args, content) => {
  content = "something";
  return content;
};

// https://hexo.io/docs/tag-plugins#YouTube
hexo.extend.tag.unregister("youtube");

hexo.extend.tag.register("youtube", tagFn);

選項

ends

Use end tags. This option is false by default.

async

Enable async mode. This option is false by default.

範例

Without End Tags

插入 Youtube 影片。

hexo.extend.tag.register("youtube", function (args) {
  var id = args[0];
  return (
    '<div class="video-container"><iframe width="560" height="315" src="http://www.youtube.com/embed/' +
    id +
    '" frameborder="0" allowfullscreen></iframe></div>'
  );
});

With End Tags

插入 pull quote。

hexo.extend.tag.register(
  "pullquote",
  function (args, content) {
    var className = args.join(" ");
    return (
      '<blockquote class="pullquote' +
      className +
      '">' +
      content +
      "</blockquote>"
    );
  },
  { ends: true },
);

非同步渲染

插入檔案。

var fs = require("hexo-fs");
var pathFn = require("path");

hexo.extend.tag.register(
  "include_code",
  function (args) {
    var filename = args[0];
    var path = pathFn.join(hexo.source_dir, filename);

    return fs.readFile(path).then(function (content) {
      return "<pre><code>" + content + "</code></pre>";
    });
  },
  { async: true },
);

Front-matter and user configuration

Any of the following options is valid:

hexo.extend.tag.register('foo', function (args) {
  const [firstArg] = args;

  // User config
  const { config } = hexo;
  const editor = config.author + firstArg;

  // Theme config
  const { config: themeCfg } = hexo.theme;
  if (themeCfg.fancybox) // do something...

  // Front-matter
  const { title } = this; // article's (post/page) title

  // Article's content
  const { _content } = this; // original content
  const { content } = this; // HTML-rendered content

  return 'foo';
});

index.js

hexo.extend.tag.register("foo", require("./lib/foo")(hexo));

lib/foo.js

module.exports = hexo => {
  return function fooFn(args) {
    const [firstArg] = args;

    const { config } = hexo;
    const editor = config.author + firstArg;

    const { config: themeCfg } = hexo.theme;
    if (themeCfg.fancybox) // do something...

    const { title, _content, content } = this;

    return 'foo';
  };
};