api/Element/className.json

{
  "api": {
    "Element": {
      "className": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/Element/className",
          "spec_url": "https://dom.spec.whatwg.org/#ref-for-dom-element-classname①",
          "tags": [
            "web-features:dom"
          ],
          "support": {
            "chrome": [
              {
                "version_added": "22"
              },
              {
                "version_added": "1",
                "version_removed": "22",
                "partial_implementation": true,
                "notes": "Only supported for [`HTMLElement`](https://developer.mozilla.org/docs/Web/API/HTMLElement), not all `Element` objects, such as [`SVGElement`](https://developer.mozilla.org/docs/Web/API/SVGElement)."
              }
            ],
            "chrome_android": "mirror",
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "1"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "5"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "8"
            },
            "opera_android": {
              "version_added": "10.1"
            },
            "safari": {
              "version_added": "1"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}