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。
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
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
title |
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support
- Partial support
- Partial support
- Has more compatibility info.
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.