AJAX web applications are all the rage these days, and one important aspect of AJAX (the "A" and, depending
who you ask, the "X") is a mechanism of making asynchronous connections from the back end of a web application
with an object called XMLHttpRequest (XMLHTTP for Internet Explorer). This request is used to retrieve XML
or other data from web services such as those provided by us here at Yahoo!. In this HOWTO you'll learn how to
make web service requests to Yahoo! Web Services with JavaScript and the XMLHttpRequest object. This page
contains these sections:

• How it All Works
• Formulate the Yahoo! Web Services Request
• Create the XMLHttpRequest Object & Make the Request
• Create a Callback
• Parse the Result
• For More Information

This HOWTO uses the code contained in Yahoo! Search Web Services REST request, a sample created for the
Yahoo! Developer Network JavaScript Developer Center.

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HOWTO Make Yahoo Web Service REST Calls with JavaScript and XMLHttpRequest