Does it have to be js/css/html as a combo?

Question

Do you have to use html js and css together or can use c# instead of js cuz i see everybody using them 3 together.
So why, do they flow better with each other or is it that they only work together.
And what do you advice me to do, i am learning c# as we speak and i am wondering should i switch to javascript to do cool stuff like thet do just stick with c#. From the prespective of a beginner ofc

Answer 1

HTML => page structure
JavaScript => Behavior (validation,etc)
CSS => stilling (colors, flowless design )

so without this combo web page wouldn't​ complete.

even in C# u use them.
Go to .aspx or .cshtml u gonna see html. JavaScript is auto generated for client side stuff. Check some controllers. When u change color of button it's genetating CSS for u.
in web everything comes as HTML, CSS and JavaScript to the browser.
C# is a general purpose language. Using ASP net u get more power to handle server side.
I think u better start with HTML, JavaScript,CSS u will get better understanding abt the web.

Answer 2

thank you.

i will start with it and share draft code soon. i have documentation on what the module should work like, however my goal is to see if i can create template code that merges wordpress plugin functionality to this ionic web app platform.