HTMLTitleElement: text property
The text property of the HTMLTitleElement interface represents the child text content of the document's title as a string. It contains the <title> element's content as text; if HTML tags are included within the <title> element, they are included as part of the string value rather than being parsed as HTML.
Setting a value for the text property replaces the entire text contents of the <title>.
Value
A string.
Examples
Consider the example below:
html
<!doctype html>
<html lang="en-US">
<head>
<title>
Hello world! <span class="highlight">Isn't this wonderful</span> really?
</title>
</head>
<body></body>
</html>
js
const title = document.querySelector("title");
console.log(title.text); // "Hello world! <span class="highlight">Isn't this wonderful</span> really?"
title.text = "Update the title";
As you can see, the span tag remained unparsed; the <title> element's contents were treated as plain text and returned exactly as they appear in the title element.