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An example of a back-end language is PHP, which is a scripting language. When a PHP page is requested, the server reads any PHP code and renders the markup. The result is HTML that is sent to you. You, the web page viewer, never see one line of PHP code. Assuming that the web server administrator has done his or her job correctly, the server would and could never show you the actual PHP code. It is parsed when the page is served up and the result of that code are turned into HTML.
Front End Programming LanguagesJavaScript is probably the most commonly used front-end web development language. It is a scripting language and unless you explicitly have JavaScript disabled in your browser, you see and interact with JavaScript every day. When you request a web page, the JavaScript is either in the page, or is downloaded in a separate file. JavaScript runs in your browser. Most associate JavaScript with the annoying pop-up ads that we all find very annoying. This was true in the past, but today, JavaScript plays an integral part in creating rich user experiences.
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What is use multiple reflection?
In a barber shop: a mirror is held at your back so that you can see the back of your head in the front mirror. In a trial room, you can view how the clothing looks from different angles and places. -Akshat
A Wagon train is one mile long travels one mile at a constant rate At same time a wagon master rides his horse at a constant rate from the front of the train to the rear then back how far did he ride?
3 miles
What is the sum of 2 numbers is 13 and their difference is 7?
3 and 10 The sum of 3 and 10 is 13 The difference of 3 and 10 is 7 Using algebraic notation, if the two numbers are x and y: x + y = 13 x - y = 7 If you add these two equations you get 2x = 20 so x = 10 Substituting this back into the original equations you find that y must then be 3
What is the smallest and biggest palindromic number?
Since a palindrome is just a number that reads the same way back and forth, the smallest palindrome would be 1. As there are an infinite number of palindromes (as you could just take any palindrome and simply place the same number in front of it and behind it, for example: 3, 939,99399,9993999,999939999, etc.), there is no biggest palindrome (infinity)
What is the difference between RequestDispatcher.forward and HttpServletResponse.sendRedirect?
In send Redirect whenever the client makes any request it goes to the container, there the container decides whether the concerned servlet can handle the request or not. If not then the servlet decides that the request can be handle by other servlet or jsp. Then the servlet calls the sendRedirect() method of the response object and sends back the response to the browser along with the status code. Then the browser sees the status code and look for that servlet which can now handle the request. Again the browser makes a new request, but with the name of that servlet which can now handle the request and the result will be displayed to you by the browser. In all this process the client is unaware of the processing.
