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Important Notice: Project moved to http://github.com/ilinsky/xmlhttprequest

This project aims to:

  • Deliver unobtrusive standard-compliant (W3C) cross-browser implementation of the XMLHttpRequest 1.0 object
  • Fix ALL browsers quirks observed in their native XMLHttpRequest object implementations
  • Enable transparent logging of XMLHttpRequest object activity

Browser quirks fixed:

Browser Name Problem description
All browsers missing static members (UNSENT, OPENED, HEADERS_RECEIVED, LOADING, DONE)
Internet Explorer All / Opera All missing EventTarget interface implementation
Internet Explorer 7.0 Native XMLHttpRequest object can't load local files in IE7 new
Internet Explorer<7.0 missing native XMLHttpRequest object support
Internet Explorer 6.0 memory leak caused by onreadystatechange handler (on-page)
Internet Explorer 6.0 memory leak caused by onreadystatechange handler (inter-page)
Internet Explorer All connections leakage between pages
Internet Explorer All onreadystatechange wrong execution context
Gecko All onreadystatechange wrong execution context
Internet Explorer All readystatechange OPENED fired twice
Gecko All readystatechange OPENED fired twice
Gecko All missing readystatechange calls in synchronous requests
Gecko All unnecessary readystatechange DONE call when request aborted
Gecko All annoying "&gt;parsererror /&lt;" document for invalid XML documents
Internet Explorer All empty documents for invalid XML documents
Opera 9.x empty documents for invalid XML documents
Internet Explorer 6.0 cached document is not checked against modification date (uncomment in source to use)
Internet Explorer All responseXML is not properly initialized for application/xxx+xml responses
Safari 3.0 sending document created/modified dynamically chunks serializing
Internet Explorer All custom Content-Type overridden when sending XML nodes

How To Use:

<head>
    ...
        <script type="text/javascript" src="XMLHttpRequest.js"></script>
    ...
</head>

Known issues:

  • implementation doesn't throw errors on accessing status and statusText properties in an inappropriate moment of time

Links to online resources

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