intersectionobserver.json

{
  "title":"IntersectionObserver",
  "description":"API that can be used to understand the visibility and position of DOM elements relative to a containing element or to the top-level viewport. The position is delivered asynchronously and is useful for understanding the visibility of elements and implementing pre-loading and deferred loading of DOM content.",
  "spec":"https://www.w3.org/TR/intersection-observer/",
  "status":"wd",
  "links":[
    {
      "url":"https://developer.mozilla.org/en-US/docs/Web/API/Intersection_Observer_API",
      "title":"MDN Web Docs - Intersection Observer"
    },
    {
      "url":"https://github.com/w3c/IntersectionObserver/tree/master/polyfill",
      "title":"Polyfill"
    },
    {
      "url":"https://developers.google.com/web/updates/2016/04/intersectionobserver",
      "title":"Google Developers article"
    }
  ],
  "bugs":[
    {
      "description":"[Chromium](https://bugs.chromium.org/p/chromium/issues/detail?id=833725): In a background tab, IntersectionObserver does not trigger its callback."
    }
  ],
  "categories":[
    "DOM",
    "JS API"
  ],
  "stats":{
    "ie":{
      "5.5":"n",
      "6":"n",
      "7":"n",
      "8":"n",
      "9":"n",
      "10":"n",
      "11":"n"
    },
    "edge":{
      "12":"n",
      "13":"n",
      "14":"n",
      "15":"a #3",
      "16":"y",
      "17":"y",
      "18":"y"
    },
    "firefox":{
      "2":"n",
      "3":"n",
      "3.5":"n",
      "3.6":"n",
      "4":"n",
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      "48":"n",
      "49":"n",
      "50":"n",
      "51":"n",
      "52":"n d #1",
      "53":"n d #1",
      "54":"n d #1",
      "55":"y",
      "56":"y",
      "57":"y",
      "58":"y",
      "59":"y",
      "60":"y",
      "61":"y",
      "62":"y",
      "63":"y"
    },
    "chrome":{
      "4":"n",
      "5":"n",
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      "7":"n",
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      "50":"n",
      "51":"a #3",
      "52":"a #3",
      "53":"a #3",
      "54":"a #3",
      "55":"a #3",
      "56":"a #3",
      "57":"a #3",
      "58":"y",
      "59":"y",
      "60":"y",
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      "64":"y",
      "65":"y #4",
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    "safari":{
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    "opera":{
      "9":"n",
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      "45":"y",
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    "ios_saf":{
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      "8":"n",
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      "11.0-11.2":"n",
      "11.3-11.4":"n",
      "12":"n"
    },
    "op_mini":{
      "all":"n"
    },
    "android":{
      "2.1":"n",
      "2.2":"n",
      "2.3":"n",
      "3":"n",
      "4":"n",
      "4.1":"n",
      "4.2-4.3":"n",
      "4.4":"n",
      "4.4.3-4.4.4":"n",
      "67":"y"
    },
    "bb":{
      "7":"n",
      "10":"n"
    },
    "op_mob":{
      "10":"n",
      "11":"n",
      "11.1":"n",
      "11.5":"n",
      "12":"n",
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      "46":"y"
    },
    "and_chr":{
      "67":"y"
    },
    "and_ff":{
      "60":"y"
    },
    "ie_mob":{
      "10":"n",
      "11":"n"
    },
    "and_uc":{
      "11.8":"a #3"
    },
    "samsung":{
      "4":"n",
      "5":"a #3",
      "6.2":"a #3",
      "7.2":"y"
    },
    "and_qq":{
      "1.2":"n"
    },
    "baidu":{
      "7.12":"n"
    }
  },
  "notes":"",
  "notes_by_num":{
    "1":"Enabled in Firefox by setting the `about:config` preference `dom.IntersectionObserver.enabled` to true",
    "2":"\"Preliminary\" support as feature is still in development",
    "3":"`isIntersecting` property of `IntersectionObserverEntry` was not implemented, returning `undefined`",
    "4":"IntersectionObserver does not trigger its callback in a Chrome background tab"
  },
  "usage_perc_y":64.45,
  "usage_perc_a":9.64,
  "ucprefix":false,
  "parent":"",
  "keywords":"",
  "ie_id":"intersectionobserver",
  "chrome_id":"5695342691483648",
  "firefox_id":"intersection-observer",
  "webkit_id":"specification-intersection-observer",
  "shown":true
}