The ability of AJAX applications to make an HTTP connection behind the scenes to fetch small bits of information is one of the powerful tools that the modern browser APIs come equipped with. For most browsers (e.g., Firefox 1.5, Safari 2.0, Opera 8.5), the engine behind this task is the window object’s XHR object. Internet Explorer 5.5-6 has different syntax for this object, such as XMLHttp, but IE 7 is expected to adopt the same object as the other browsers. |
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