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I guess that if you can insert javascript to the page, you can add style tags with the desired class(es), not to mention to link to a new CSS file.
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my understanding was you can only edit an existing javascript file, not the document?<br />
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(just don't put the script tags inside the js).
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If you can edit the javascript file, simply use it to write a new &lt;link&gt; in the head pointing to the url for a stylesheet of your choice :)
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Can I add (define) a class inside a JS file? &nbsp;I don't have access to the CSS file of this particular site so I'm wondering &nbsp;if I can do it from the java script file to which I do have access. &nbsp;Complete newbie here, thanks for the comments.
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Can I add (define) a class inside a JS file?  I don't have access to the CSS file of this particular site so I'm wondering  if I can do it from the java script file to which I do have access.  Complete newbie here, thanks for the comments.

I guess that if you can insert javascript to the page, you can add style tags with the desired class(es), not to mention to link to a new CSS file.

my understanding was you can only edit an existing javascript file, not the document?

(just don&#39;t put the script tags inside the js).

If you can edit the javascript file, simply use it to write a new &lt;link&gt; in the head pointing to the url for a stylesheet of your choice :)

Define a class in JS file

Can I add (define) a class inside a JS file?  I don&#39;t have access to the CSS file of this particular site so I&#39;m wondering  if I can do it from the java script file to which I do have access.  Complete newbie here, thanks for the comments.

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.

JavaScript

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.

Java

Cascading Style Sheets (CSS) is a language used for describing the look and formatting of a document written in a markup language. Usually used to change web pages and user interfaces written in HTML, it can also be applied to any kind of XML document. CSS is designed primarily to distinguish the content of a document from its presentation.