{
  "title":"Cross-Origin Resource Sharing",
  "description":"Method of performing XMLHttpRequests across domains",
  "spec":"https://fetch.spec.whatwg.org/#http-cors-protocol",
  "status":"ls",
  "links":[
    {
      "url":"http://hacks.mozilla.org/2009/07/cross-site-xmlhttprequest-with-cors/",
      "title":"Mozilla Hacks blog post"
    },
    {
      "url":"http://msdn.microsoft.com/en-us/library/cc288060(VS.85).aspx",
      "title":"Alternative implementation by IE8"
    },
    {
      "url":"https://dev.opera.com/articles/view/dom-access-control-using-cross-origin-resource-sharing/",
      "title":"DOM access using CORS"
    },
    {
      "url":"https://raw.github.com/phiggins42/has.js/master/detect/features.js#native-cors-xhr",
      "title":"has.js test"
    }
  ],
  "bugs":[
    {
      "description":"IE10+ does not send cookies when withCredential=true ([IE Bug #759587](https://connect.microsoft.com/IE/feedback/details/759587/ie10-doesnt-support-cookies-on-cross-origin-xmlhttprequest-withcredentials-true)). A workaround is [to use a P3P policy](http://www.techrepublic.com/blog/software-engineer/craft-a-p3p-policy-to-make-ie-behave/)"
    },
    {
      "description":"IE10+ does not make a CORS request if port is the only difference ([IE Bug #781303](http://connect.microsoft.com/IE/feedback/details/781303))"
    },
    {
      "description":"Android and some old versions of WebKit (that may be found in various webview implementations) do not support Access-Control-Expose-Headers: https://code.google.com/p/android/issues/detail?id=56726"
    },
    {
      "description":"IE11 does not appear to support CORS for images in the `canvas` element"
    }
  ],
  "categories":[
    "JS API"
  ],
  "stats":{
    "ie":{
      "5.5":"n",
      "6":"n",
      "7":"n",
      "8":"a #2",
      "9":"a #2",
      "10":"a #1",
      "11":"y"
    },
    "edge":{
      "12":"y",
      "13":"y",
      "14":"y"
    },
    "firefox":{
      "2":"n",
      "3":"n",
      "3.5":"y",
      "3.6":"y",
      "4":"y",
      "5":"y",
      "6":"y",
      "7":"y",
      "8":"y",
      "9":"y",
      "10":"y",
      "11":"y",
      "12":"y",
      "13":"y",
      "14":"y",
      "15":"y",
      "16":"y",
      "17":"y",
      "18":"y",
      "19":"y",
      "20":"y",
      "21":"y",
      "22":"y",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y",
      "44":"y",
      "45":"y",
      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y"
    },
    "chrome":{
      "4":"a #1",
      "5":"a #1",
      "6":"a #1",
      "7":"a #1",
      "8":"a #1",
      "9":"a #1",
      "10":"a #1",
      "11":"a #1",
      "12":"a #1",
      "13":"y",
      "14":"y",
      "15":"y",
      "16":"y",
      "17":"y",
      "18":"y",
      "19":"y",
      "20":"y",
      "21":"y",
      "22":"y",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y",
      "44":"y",
      "45":"y",
      "46":"y",
      "47":"y",
      "48":"y",
      "49":"y",
      "50":"y",
      "51":"y",
      "52":"y",
      "53":"y",
      "54":"y",
      "55":"y",
      "56":"y",
      "57":"y"
    },
    "safari":{
      "3.1":"n",
      "3.2":"n",
      "4":"a #1 #3",
      "5":"a #1 #3",
      "5.1":"a #1 #3",
      "6":"y #3",
      "6.1":"y #3",
      "7":"y #3",
      "7.1":"y #3",
      "8":"y #3",
      "9":"y #3",
      "9.1":"y #3",
      "10":"y #3",
      "TP":"y #3"
    },
    "opera":{
      "9":"n",
      "9.5-9.6":"n",
      "10.0-10.1":"n",
      "10.5":"n",
      "10.6":"n",
      "11":"n",
      "11.1":"n",
      "11.5":"n",
      "11.6":"n",
      "12":"y",
      "12.1":"y",
      "15":"y",
      "16":"y",
      "17":"y",
      "18":"y",
      "19":"y",
      "20":"y",
      "21":"y",
      "22":"y",
      "23":"y",
      "24":"y",
      "25":"y",
      "26":"y",
      "27":"y",
      "28":"y",
      "29":"y",
      "30":"y",
      "31":"y",
      "32":"y",
      "33":"y",
      "34":"y",
      "35":"y",
      "36":"y",
      "37":"y",
      "38":"y",
      "39":"y",
      "40":"y",
      "41":"y",
      "42":"y",
      "43":"y"
    },
    "ios_saf":{
      "3.2":"a #1 #3",
      "4.0-4.1":"a #1 #3",
      "4.2-4.3":"a #1 #3",
      "5.0-5.1":"a #1 #3",
      "6.0-6.1":"y #3",
      "7.0-7.1":"y #3",
      "8":"y #3",
      "8.1-8.4":"y #3",
      "9.0-9.2":"y #3",
      "9.3":"y #3",
      "10-10.1":"y #3"
    },
    "op_mini":{
      "all":"n"
    },
    "android":{
      "2.1":"a #1",
      "2.2":"a #1",
      "2.3":"a #1",
      "3":"a #1",
      "4":"a #1",
      "4.1":"a #1",
      "4.2-4.3":"a #1",
      "4.4":"y",
      "4.4.3-4.4.4":"y",
      "53":"y"
    },
    "bb":{
      "7":"a #1",
      "10":"y"
    },
    "op_mob":{
      "10":"n",
      "11":"n",
      "11.1":"n",
      "11.5":"n",
      "12":"y",
      "12.1":"y",
      "37":"y"
    },
    "and_chr":{
      "54":"y"
    },
    "and_ff":{
      "50":"y"
    },
    "ie_mob":{
      "10":"a #1",
      "11":"y"
    },
    "and_uc":{
      "11":"y"
    },
    "samsung":{
      "4":"y"
    }
  },
  "notes":"",
  "notes_by_num":{
    "1":"Does not support CORS for images in `<canvas>`",
    "2":"Supported somewhat in IE8 and IE9 using the XDomainRequest object (but has [limitations](http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx))",
    "3":"Does not support CORS for `<video>` in `<canvas>`: https://bugs.webkit.org/show_bug.cgi?id=135379"
  },
  "usage_perc_y":91.82,
  "usage_perc_a":2,
  "ucprefix":false,
  "parent":"",
  "keywords":"",
  "ie_id":"",
  "chrome_id":"",
  "firefox_id":"",
  "webkit_id":"",
  "shown":true
}