Document：head 屬性

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨2018年6月⁩.

Document 介面的 head 唯讀屬性回傳當前文件的 <head> 元素。

值

html

<!doctype html>
<head id="my-document-head">
  <title>範例：使用 document.head</title>
</head>

const theHead = document.head;

console.log(theHead.id); // 「my-document-head」;
console.log(theHead === document.querySelector("head")); // true

document.head 是唯讀的。嘗試為此屬性賦值將會靜默失敗，或者在嚴格模式中拋出 TypeError。

Specification
HTML # dom-document-head-dev

This page was last modified on ⁨2025年6月21日⁩ by MDN contributors.