AJAX is a web development technique for creating interactive web applications.
- AJAX stands for Asynchronous JavaScript and XML.
It is a new technique for creating better, faster, and more interactive
web applications with the help of XML, HTML, CSS, and Java Script.
- Ajax uses XHTML for content, CSS for presentation, along with Document Object Model and JavaScript for dynamic content display.
- Conventional web applications transmit information to and from the server using synchronous requests. It means you fill out a form, hit submit, and get directed to a new page with new information from the server.
- With AJAX, when you hit submit, JavaScript will make a request to the server, interpret the results, and update the current screen. In the purest sense, the user would never know that anything was even transmitted to the server.
- XML is commonly used as the format for receiving server data, although any format, including plain text, can be used.
- AJAX is a web browser technology independent of web server software.
- A user can continue to use the application while the client program requests information from the server in the background.
<html> <head> <title>The jQuery Example</title> <script type = "text/javascript" src = "https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script> <script type = "text/javascript" language = "javascript"> $(document).ready(function() { $("#driver").click(function(event){ $('#stage').load('/jquery/result.html'); }); }); </script> </head> <body> <p>Click on the button to load /jquery/result.html file −</p> <div id = "stage" style = "background-color:cc0;"> STAGE </div> <input type = "button" id = "driver" value = "Load Data" /> </body> </html>Here load() initiates an Ajax request to the specified URL /coffeescript/result.html file. After loading this file, all the content would be populated inside <div> tagged with ID stage. Assuming that our /jquery/result.html file has just one HTML line −
<h1>THIS IS RESULT...</h1>When you click the given button, then result.html file gets loaded.
CoffeeScript with Ajax
We can rewrite the above example using CoffeeScript as shown below.<html> <head> <title>The jQuery Example</title> <script type = "text/javascript" src = "https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script> <script src="http://coffeescript.org/extras/coffee-script.js"></script> <script type="text/coffeescript"> $(document).ready -> $('#driver').click (event) -> $('#stage').load '/jquery/result.html' return return </script> </head> <body> <p>Click on the button to load /jquery/result.html file -</p> <div id = "stage" style = "background-color:cc0;"> STAGE </div> <input type = "button" id = "driver" value = "Load Data" /> </body> </html>
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