{"mdn_url":"https://developer.mozilla.org/docs/Web/API/MutationObserver/observe","source_file":"api/MutationObserver.json","spec_url":"https://dom.spec.whatwg.org/#ref-for-dom-mutationobserver-observe②","status":{"deprecated":false,"experimental":false,"standard_track":true},"support":{"chrome":{"notes":"Before Chrome 33, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Chrome throws a syntax error.","version_added":"18"},"chrome_android":{"notes":"Before Chrome 33, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Chrome throws a syntax error.","version_added":"18"},"edge":{"notes":"Before Edge 79, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Edge throws a syntax error.","version_added":"12"},"firefox":{"notes":"Before Firefox 36, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Firefox throws a syntax error.","version_added":"14"},"firefox_android":{"notes":"Before Firefox 36, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Firefox throws a syntax error.","version_added":"14"},"ie":{"notes":"Internet Explorer requires <code>attributes: true</code> when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Internet Explorer throws a syntax error.","version_added":"11"},"oculus":{"notes":"Before Chrome 33, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Chrome throws a syntax error.","version_added":"5.0"},"opera":{"notes":"Before Opera 20, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Opera throws a syntax error.","version_added":"15"},"opera_android":{"notes":"Before Opera 20, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Opera throws a syntax error.","version_added":"14"},"safari":{"notes":"Before Safari 10.1, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Safari throws a syntax error.","version_added":"6"},"safari_ios":{"notes":"Before Safari iOS 10.3, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Safari throws a syntax error.","version_added":"6"},"samsunginternet_android":{"notes":"Before Samsung Internet 2.0, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then Samsung Internet throws a syntax error.","version_added":"1.0"},"webview_android":{"notes":"Before WebView 4.4.3, <code>attributes: true</code> is required when using <code>attributeFilter</code> or <code>attributeOldValue</code>. If <code>attributes: true</code> is not present, then WebView throws a syntax error.","version_added":"4.4"}}}