{"mdn_url":"https://developer.mozilla.org/docs/Web/API/UIEvent/which","source_file":"api/UIEvent.json","spec_url":"https://w3c.github.io/uievents/#dom-uievent-which","status":{"deprecated":true,"experimental":false,"standard_track":true},"support":{"chrome":{"version_added":"1"},"chrome_android":{"version_added":"18"},"edge":[{"version_added":"79"},{"notes":"Only supported for <a href='https://developer.mozilla.org/docs/Web/API/KeyboardEvent'><code>KeyboardEvent</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/MouseEvent'><code>MouseEvent</code></a>, not all <code>UIEvent</code> objects.","partial_implementation":true,"version_added":"12","version_removed":"79"}],"firefox":{"notes":"On <code>mousemove</code> events, the <code>which</code> property is incorrectly always set to <code>1</code>.","version_added":"1"},"firefox_android":{"notes":"On <code>mousemove</code> events, the <code>which</code> property is incorrectly always set to <code>1</code>.","version_added":"4"},"ie":{"notes":"Only supported for <a href='https://developer.mozilla.org/docs/Web/API/KeyboardEvent'><code>KeyboardEvent</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/MouseEvent'><code>MouseEvent</code></a>, not all <code>UIEvent</code> objects.","partial_implementation":true,"version_added":"9"},"oculus":{"version_added":"5.0"},"opera":[{"version_added":"15"},{"notes":"Only supported for <a href='https://developer.mozilla.org/docs/Web/API/KeyboardEvent'><code>KeyboardEvent</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/MouseEvent'><code>MouseEvent</code></a>, not all <code>UIEvent</code> objects.","partial_implementation":true,"version_added":"≤12.1","version_removed":"15"}],"opera_android":[{"version_added":"14"},{"notes":"Only supported for <a href='https://developer.mozilla.org/docs/Web/API/KeyboardEvent'><code>KeyboardEvent</code></a> and <a href='https://developer.mozilla.org/docs/Web/API/MouseEvent'><code>MouseEvent</code></a>, not all <code>UIEvent</code> objects.","partial_implementation":true,"version_added":"≤12.1","version_removed":"14"}],"safari":{"version_added":"1"},"safari_ios":{"version_added":"1"},"samsunginternet_android":{"version_added":"1.0"},"webview_android":{"version_added":"≤37"}}}