An ETag is an opaque identifier allocated by a web server to a specific version of a resource found at a URL. The ETag is a part of HTTP, the protocol for the world wide web and when the server reads the ETag from client request, the server can then tell whether to send the file (HTTP 200) or tell the client just to use their local copy (HTTP 304).
Explain what are the key responsibilities of a Web Developer? Explain what is long polling? Explain what is CORS? How does it work? Explain in CSS, how can you make a form element’s background color change when the user is entering text? Does this work in all browsers? What web developer should know? In HTML […]
Explain in CSS, how can you make a form element’s background color change when the user is entering text? Does this work in all browsers?
Yes, you can change the default look of form elements by styling their HTML tags: input, select and textarea but it won’t work for all browsers.
The advantage of HTTP/2 compared to HTTP/1.1 is HTTP headers data compression Server push technologies Over a single TCP connection parallel loading of page elements Prioritization of request