For web development, is it neccessary to know HTML, CSS, Javascript, PHP and other simultaneously?

Question

Well I'm learning HTML, but I often find that CSS, Javascript are also used along with it. Can one develop a webpage solely based on HTML or on CSS or on Javascript, etc.!

Answer 1

we can use only HTML for a simple, classic static website but in order to make beautiful we must use css, in order to add some functionalities to your website you must use JavaScript and JQuery, to write a server-side application use Php
we need all of them to develop a dynamic professional website.Best of luck..!