{ "title":"XMLHttpRequest advanced features", "description":"Updated functionality to the original XHR specification including things like file uploads, transfer progress information and the ability to send FormData. Previously known as [XMLHttpRequest Level 2](https://www.w3.org/TR/2012/WD-XMLHttpRequest-20120117/), these features now appear simply in the XMLHttpRequest spec.", "spec":"https://xhr.spec.whatwg.org/", "status":"ls", "links":[ { "url":"https://developer.mozilla.org/en/XMLHttpRequest/FormData", "title":"MDN Web Docs - FormData" }, { "url":"https://github.com/jimmywarting/FormData", "title":"Polyfill for FormData object" }, { "url":"https://webplatform.github.io/docs/apis/xhr/XMLHttpRequest", "title":"WebPlatform Docs" } ], "bugs":[ { "description":"Firefox 3.5 and 3.6 partial support refers to only including support for the progress event." }, { "description":"WebKit versions 535 and older (r103502) do not implement the onloadend event" }, { "description":"IE10 and 11 do not support synchronous requests, with support being phased out in other browsers too. This is due to [detrimental effects](https://xhr.spec.whatwg.org/#sync-warning) resulting from making them." }, { "description":"The \"progress\" event is reported to not work in Chrome for iOS " }, { "description":"In Internet Explorer the `timeout` property may only be set after calling `open` and before calling `send`." } ], "categories":[ "DOM", "JS API" ], "stats":{ "ie":{ "5.5":"n", "6":"n", "7":"n", "8":"n", "9":"n", "10":"a #1 #4", "11":"a #1 #4" }, "edge":{ "12":"a #4", "13":"a #4", "14":"a #4", "15":"a #4", "16":"a #4", "17":"a #4", "18":"a #4", "79":"y", "80":"y", "81":"y", "83":"y", "84":"y", "85":"y", "86":"y", "87":"y", "88":"y", "89":"y", "90":"y", "91":"y", "92":"y", "93":"y", "94":"y", "95":"y", "96":"y", "97":"y", "98":"y", "99":"y", "100":"y", "101":"y", "102":"y", "103":"y", "104":"y", "105":"y", "106":"y", "107":"y", "108":"y", "109":"y", "110":"y", "111":"y", "112":"y", "113":"y", "114":"y", "115":"y", "116":"y", "117":"y", "118":"y", "119":"y", "120":"y", 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