如何使用 javascript 更改 <title> 元素？
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How do you change the <title> element with javascript?
提问by chromedude
I have a HTML <title>element which I want to dynamically change depending on other elements. I tried using document.getElementsByTagName('title').innerHTML = dynamicContentbut this did not seem to work. I have seen it done before, but I can't seem to figure out exactly how to do this.
我有一个 HTML<title>元素，我想根据其他元素动态更改它。我尝试使用，document.getElementsByTagName('title').innerHTML = dynamicContent但这似乎不起作用。我以前看过它，但我似乎无法确切地弄清楚如何做到这一点。
回答by Tomas Petricek
Do you mean the <title>element in <head>of the page?
If yes, then changing document.titleshould do the trick.
你的意思是页面中的<title>元素<head>？
如果是，那么改变document.title应该可以解决问题。
回答by AndreKR
getElementsByTagName()returns a NodeList, so you need to pick one element:
getElementsByTagName()返回一个 NodeList，因此您需要选择一个元素：
document.getElementsByTagName('title')[0].innerHTML = dynamicContent
There's also a shortcut to the title:
标题还有一个快捷方式：
document.title = dynamicContent
回答by meder omuraliev
You can manipulate
你可以操纵
a) document.title = 'blah';
a) document.title = 'blah';
b) .textContent or .innerText depending on the browser
b) .textContent 或 .innerText 取决于浏览器
