{
  "title":"XMLHttpRequest advanced features",
  "description":"Adds more functionality to XHR (aka AJAX) requests like file uploads, transfer progress information and the ability to send form data. 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://www.webplatform.org/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"
  ],
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      "6":"n",
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      "16":"y",
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      "18":"y"
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      "2":"n",
      "3":"n",
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      "5":"a #1 #2 #3",
      "6":"a #1 #2",
      "7":"a #1 #2",
      "8":"a #1 #2",
      "9":"a #1 #2",
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      "13":"y",
      "14":"y",
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      "16":"y",
      "17":"y",
      "18":"y",
      "19":"y",
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      "60":"y",
      "61":"y",
      "62":"y",
      "63":"y",
      "64":"y",
      "65":"y"
    },
    "chrome":{
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      "5":"u",
      "6":"u",
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      "8":"a #1 #2",
      "9":"a #1 #2",
      "10":"a #1 #2",
      "11":"a #1 #2",
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      "16":"a #1 #2",
      "17":"a #1 #2",
      "18":"a #1 #2",
      "19":"a #1 #2",
      "20":"a #1 #2",
      "21":"a #1 #2",
      "22":"a #1 #2",
      "23":"a #1 #2",
      "24":"a #1 #2",
      "25":"a #1 #2",
      "26":"a #1 #2",
      "27":"a #1 #2",
      "28":"a #1 #2",
      "29":"a #1",
      "30":"a #1",
      "31":"y",
      "32":"y",
      "33":"y",
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      "37":"y",
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      "10.1":"y",
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      "TP":"y"
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    "opera":{
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    "ios_saf":{
      "3.2":"n",
      "4.0-4.1":"n",
      "4.2-4.3":"n",
      "5.0-5.1":"a #1 #2",
      "6.0-6.1":"a #1 #2",
      "7.0-7.1":"a #1",
      "8":"y",
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      "12":"y"
    },
    "op_mini":{
      "all":"n"
    },
    "android":{
      "2.1":"n",
      "2.2":"n",
      "2.3":"n",
      "3":"a #1 #2 #3",
      "4":"a #1 #2 #3",
      "4.1":"a #1 #2 #3",
      "4.2-4.3":"a #1 #2 #3",
      "4.4":"a #1 #2",
      "4.4.3-4.4.4":"y",
      "67":"y"
    },
    "bb":{
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      "10":"a #1"
    },
    "op_mob":{
      "10":"n",
      "11":"n",
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      "12":"y",
      "12.1":"y",
      "46":"y"
    },
    "and_chr":{
      "69":"y"
    },
    "and_ff":{
      "62":"y"
    },
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      "10":"a #1",
      "11":"a #1"
    },
    "and_uc":{
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    },
    "samsung":{
      "4":"y",
      "5":"y",
      "6.2":"y",
      "7.2":"y"
    },
    "and_qq":{
      "1.2":"y"
    },
    "baidu":{
      "7.12":"y"
    }
  },
  "notes":"",
  "notes_by_num":{
    "1":"Partial support refers to not supporting `json` as `responseType`",
    "2":"Partial support refers to not supporting `.timeout` and `.ontimeout`",
    "3":"Partial support refers to not supporting `blob` as `responseType`"
  },
  "usage_perc_y":89.66,
  "usage_perc_a":3.77,
  "ucprefix":false,
  "parent":"",
  "keywords":"formdata,xhr level 2",
  "ie_id":"",
  "chrome_id":"",
  "firefox_id":"",
  "webkit_id":"",
  "shown":true
}