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Frequently Asked Questions

What is the use of XMLHTTP?

XMLHTTP works by sending a request to the Web server from the client and returning an XML data island. Depending on the structure of the XML that is received, you can use XSLT or the XML DOM to manipulate it and bind portions of the page to that data. This is an extremely powerful technique.

What is an XMLHttpRequest object?

All modern browsers have a built-in XMLHttpRequest object to request data from a server. The XMLHttpRequest object can be used to request data from a web server. The XMLHttpRequest object is a developers dream, because you can:

What is the open method of the XMLHTTP object for?

The open method of the XMLHTTP object is called next. I've used the first three arguments for the open method; the method, the URL, and a Boolean value that specifies whether or not the call is asynchronous. Important If you are making an asynchronous call as I am here, you must set up a callback function through the onreadystatechanged property.

What is the difference between HTTP request and XMLHttpRequest?

HTTP Request is sent to the server by XMLHttpRequest object. Web Server interacts with the database through application server like ASP, JSP, and PHP etc. Data is retrieved from Data Store and return back to Web Server. Server sends XML data or JSON data to the XMLHttpRequest callback function.


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