How to automatically add protocol to incomplete URL? [closed]

1. What is the protocol in a URL?
2. What is the format of a URL?
3. Which of the following is a part of URL?

What is the protocol in a URL?

The first part of the URL is the scheme, which indicates the protocol that the browser must use to request the resource (a protocol is a set method for exchanging or transferring data around a computer network). Usually for websites the protocol is HTTPS or HTTP (its unsecured version).

What is the format of a URL?

Most web browsers display the URL of a web page above the page in an address bar. A typical URL could have the form http://www.example.com/index.html , which indicates a protocol ( http ), a hostname ( www.example.com ), and a file name ( index. html ).

Which of the following is a part of URL?

A URL consists of five parts: the scheme, subdomain, top-level domain, second-level domain, and subdirectory.