Document.title

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

document.title 属性用于获取或设置文档的标题。如果存在,它的默认为 <title> 的值。

一个包含文档标题的字符串。如果通过设置 document.title 将标题覆盖,则返回覆盖后的值。否则返回 <title> 元素里指定的标题。

js
document.title = newTitle;

newTitle 是文档的新标题。赋值操作影响 document.title 的返回值、文档的显示标题(即窗口或标签页顶部的标题栏),另外还会影响文档的 DOM,即改变 HTML 文档中 <title> 元素的内容。

示例

html
<!doctype html>
<html lang="en-US">
  <head>
    <meta charset="UTF-8" />
    <title>Hello World!</title>
  </head>
  <body>
    <script>
      alert(document.title); // 显示 "Hello World!"
      document.title = "Goodbye World!";
      alert(document.title); // 显示 "Goodbye World!"
    </script>
  </body>
</html>

规范

Specification
HTML
# document.title

浏览器兼容性

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desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
title

Legend

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Full support
Full support
Partial support
Partial support
Has more compatibility info.