{
  "url": "https://unifast.dev/zh-TW/docs/packages/node/code-meta/",
  "locale": "zh-TW",
  "title": "codeMeta()",
  "description": "將程式碼圍籬的 meta 字串解析為程式碼區塊上的 data 屬性。",
  "section": "packages",
  "body": "```ts\nimport { codeMeta } from \"@unifast/node\";\n```\n\n## 函式簽名\n\n```ts\nfunction codeMeta(): UnifastPlugin\n```\n\n## 參數\n\n無。\n\n## 用法\n\n```ts\nimport { compile, codeMeta } from \"@unifast/node\";\n\nconst md = `\\`\\`\\`js title=\"example.js\"\nconsole.log(\"hello\");\n\\`\\`\\``;\n\nconst result = compile(md, {\n  plugins: [codeMeta()],\n});\n// The <pre> element gets data-title=\"example.js\"\n```\n\n## 範例\n\n### 基本的 meta 解析\n\n`codeMeta()` 外掛會解析圍籬式程式碼區塊中語言識別字之後的 meta 字串，並將可識別的鍵轉換為 `<pre>` 元素上的 `data-*` 屬性：\n\n```ts\nimport { compile, codeMeta } from \"@unifast/node\";\n\nconst md = `\\`\\`\\`js title=\"app.ts\"\nconst x = 1;\n\\`\\`\\``;\n\nconst result = compile(md, { plugins: [codeMeta()] });\nconsole.log(result.output);\n// <pre data-lang=\"js\" data-title=\"app.ts\"><code class=\"language-js\">const x = 1;\n// </code></pre>\n```\n\n### 多個 meta 屬性\n\n您可以組合多個 meta 屬性，例如 `title`、用於行號高亮的 `{1,3-5}`、`showLineNumbers`、`diff` 與 `wordWrap`：\n\n```ts\nimport { compile, codeMeta } from \"@unifast/node\";\n\nconst md = `\\`\\`\\`ts title=\"server.ts\" {1,3} showLineNumbers\nimport express from \"express\";\nconst app = express();\napp.listen(3000);\n\\`\\`\\``;\n\nconst result = compile(md, { plugins: [codeMeta()] });\n// The <pre> element receives:\n//   data-title=\"server.ts\"\n//   Lines 1 and 3 get data-highlighted attributes\n//   showLineNumbers is recognized as a boolean flag\n```",
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