<noscript>
HTML <noscript> Tag
The <noscript> tag has an alternative content displayed in the browsers not supporting scripts, or the browsers, where the user disables the script support. Otherwise, the browser ignores this tag and its content.
In HTML5 the <noscript> tag can be placed in the <head> and <body> elements. In HTML4 it can be used only in the <body> element. If the <noscript> is placed in the <head> tag, it must contain only the <link>, <style> and <meta> tags.
You can use the comment tag to “hide” scripts from browsers not supporting client-side scripts. （>您可以使用注释标签对不支持客户端脚本的浏览器“隐藏”脚本。）
Syntax
Syntax （语法）
The <noscript> tag comes in pairs. The content is written between the opening (<noscript>) and closing (</noscript>) tags.
Example of the HTML <noscript> tag:
<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
</head>
<body>
<script>
document.write("My first code in JavaScript!")
（document.write ("我的第一个JavaScript代码！")）
</script>
<noscript>Sorry, your Browser doesn’t support JavaScript!</noscript>
</body>
</html>
Result
Attributes
Attributes （属性）
The <noscript> tag supports the Global Attributes and the Event Attributes.