What is an advantage of a client-side programming solution over a server-side one?
The advantage of the client-side programming first is that the processing of scripts in this language can be performed without having to send the document to the server. This is easier to explain with an example: Let's say you need to check if the user has entered the e-mail ( for example, to check that it contains a "@"),& the user would have to submit a form with the data filled in, then wait until it is processed, and only then get the error message (if, of course, it& is present). The process is too long. From the client-side the same language program immediately check the correct form filling before sending and, if necessary, will fix the bug. Hence it follows, and then the restriction that by using the client programming language, nothing can be written to the server,& for example, it fails to make a guest book, because then you have to write messages to a file on the server.