The HTML <script> Tag:
Result : In the above example, the document.write() document refers to the current html document page and write method will write the text given inside the () braces. Here, it will write "Welcome World!!" inside the current document.
The HTML <noscript> Tag:
<noscript> </noscript> The <noscript> tag is used to provide an alternate content for users who have disabled scripts in their browser or for users having browsers that doesn't support client-side scripting. The <noscript> element can contain all the elements that you can find inside the element of a normal HTML page. The content inside the <noscript> element will only be displayed if scripts are not supported, or disabled in the user's browser. Example :