From 9daad59fa2578dcc9603833b0a9a22b93d362b5e Mon Sep 17 00:00:00 2001 From: MDN Date: Fri, 16 Apr 2021 00:10:51 +0000 Subject: [CRON] sync translated content --- .../api/parentnode/firstelementchild/index.html | 150 +++++++++++++++++++ .../web/api/parentnode/lastelementchild/index.html | 162 +++++++++++++++++++++ 2 files changed, 312 insertions(+) create mode 100644 files/ru/orphaned/web/api/parentnode/firstelementchild/index.html create mode 100644 files/ru/orphaned/web/api/parentnode/lastelementchild/index.html (limited to 'files/ru/orphaned') diff --git a/files/ru/orphaned/web/api/parentnode/firstelementchild/index.html b/files/ru/orphaned/web/api/parentnode/firstelementchild/index.html new file mode 100644 index 0000000000..21fb90f963 --- /dev/null +++ b/files/ru/orphaned/web/api/parentnode/firstelementchild/index.html @@ -0,0 +1,150 @@ +--- +title: ParentNode.firstElementChild +slug: orphaned/Web/API/ParentNode/firstElementChild +tags: + - API + - DOM + - ParentNode + - Property + - Reference +translation_of: Web/API/ParentNode/firstElementChild +original_slug: Web/API/ParentNode/firstElementChild +--- +

{{ APIRef("DOM") }}

+ +

Доступное только для чтения свойство ParentNode.firstElementChild возвращает первый дочерний элемент объекта ({{domxref("Element")}}) или null если дочерних элементов нет.

+ +
+

This property was initially defined in the {{domxref("ElementTraversal")}} pure interface. As this interface contained two distinct set of properties, one aimed at {{domxref("Node")}} that have children, one at those that are children, they have been moved into two separate pure interfaces, {{domxref("ParentNode")}} and {{domxref("ChildNode")}}. In this case, firstElementChild moved to {{domxref("ParentNode")}}. This is a fairly technical change that shouldn't affect compatibility.

+
+ +

Синтаксис

+ +
var childNode = elementNodeReference.firstElementChild;
+
+ +

Пример

+ +
<p id="para-01">
+  <span>First span</span>
+</p>
+
+<script type="text/javascript">
+  var p01 = document.getElementById('para-01');
+  alert(p01.firstElementChild.nodeName)
+</script>
+ +

В этом примере alert показывает 'span', что является именем тега первого дочернего узла элемента p.

+ +

Polyfill для Internet Explorer 8

+ +

Это свойство не поддерживается браузером Internet Explorer вплоть до 9 версии, поэтому следующий сниппет может быть использован для добавления поддержки IE8:

+ +
// Source: https://github.com/Alhadis/Snippets/blob/master/js/polyfills/IE8-child-elements.js
+if(!("firstElementChild" in document.documentElement)){
+    Object.defineProperty(Element.prototype, "firstElementChild", {
+        get: function(){
+            for(var nodes = this.children, n, i = 0, l = nodes.length; i < l; ++i)
+                if(n = nodes[i], 1 === n.nodeType) return n;
+            return null;
+        }
+    });
+}
+ +

Спецификация

+ + + + + + + + + + + + + + + + + + + +
СпецификацияСтатусКомментарий
{{SpecName('DOM WHATWG', '#dom-parentnode-firstelementchild', 'ParentNode.firstElementChild')}}{{Spec2('DOM WHATWG')}}Splitted the ElementTraversal interface in {{domxref("ChildNode")}} and ParentNode. This method is now defined on the latter.
+ The {{domxref("Document")}} and {{domxref("DocumentFragment")}} implemented the new interfaces.
{{SpecName('Element Traversal', '#attribute-firstElementChild', 'ElementTraversal.firstElementChild')}}{{Spec2('Element Traversal')}}Added its initial definition to the ElementTraversal pure interface and use it on {{domxref("Element")}}.
+ +

Совместимость с браузерами

+ +

{{ CompatibilityTable() }}

+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + +
FeatureChromeFirefox (Gecko)Internet ExplorerOperaSafari
Базовая поддержка ({{domxref("Element")}})1.0{{CompatGeckoDesktop("1.9.1")}}9.010.04.0
Поддержка {{domxref("Document")}} и {{domxref("DocumentFragment")}} {{experimental_inline}}29.0{{CompatGeckoDesktop("25.0")}}{{CompatNo}}16.0{{CompatNo}}
+
+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + +
FeatureAndroidFirefox Mobile (Gecko)IE MobileOpera MobileSafari Mobile
Базовая поддержка ({{domxref("Element")}}){{ CompatVersionUnknown() }}{{CompatGeckoMobile("1.9.1")}}{{ CompatVersionUnknown() }}{{ CompatVersionUnknown() }}{{ CompatVersionUnknown() }}
Поддержка {{domxref("Document")}} и {{domxref("DocumentFragment")}} {{experimental_inline}}{{CompatVersionUnknown}}{{CompatGeckoMobile("25.0")}}{{CompatNo}}16.0{{CompatNo}}
+
+ +

Смотрите также

+ + diff --git a/files/ru/orphaned/web/api/parentnode/lastelementchild/index.html b/files/ru/orphaned/web/api/parentnode/lastelementchild/index.html new file mode 100644 index 0000000000..8df658ceb5 --- /dev/null +++ b/files/ru/orphaned/web/api/parentnode/lastelementchild/index.html @@ -0,0 +1,162 @@ +--- +title: ParentNode.lastElementChild +slug: orphaned/Web/API/ParentNode/lastElementChild +tags: + - API + - DOM + - ParentNode + - Property + - Reference +translation_of: Web/API/ParentNode/lastElementChild +original_slug: Web/API/ParentNode/lastElementChild +--- +

{{ APIRef("DOM") }}

+ +

Свойство ParentNode.lastElementChild только для чтения. Возвращает последний дочерний элемент объекта или null если нет дочерних элементов.

+ +
+

This property was initially defined in the {{domxref("ElementTraversal")}} pure interface. As this interface contained two distinct set of properties, one aimed at {{domxref("Node")}} that have children, one at those that are children, they have been moved into two separate pure interfaces, {{domxref("ParentNode")}} and {{domxref("ChildNode")}}. In this case, lastElementChild moved to {{domxref("ParentNode")}}. This is a fairly technical change that shouldn't affect compatibility.

+
+ +

Синтаксис

+ +
var element = node.lastElementChild;
+ +

Пример

+ +
<ul id="foo">
+  <li>First  (1)</li>
+  <li>Second (2)</li>
+  <li>Third  (3)</li>
+</ul>
+
+<script>
+var foo = document.getElementById('foo');
+// yields: Third  (3)
+console.log(foo.lastElementChild.textContent);
+</script>
+
+ +

Polyfill for IE8, IE9 and Safari

+ +
// Overwrites native 'lastElementChild' prototype.
+// Adds Document & DocumentFragment support for IE9 & Safari.
+// Returns array instead of HTMLCollection.
+;(function(constructor) {
+    if (constructor &&
+        constructor.prototype &&
+        constructor.prototype.lastElementChild == null) {
+        Object.defineProperty(constructor.prototype, 'lastElementChild', {
+            get: function() {
+                var node, nodes = this.childNodes, i = nodes.length - 1;
+                while (node = nodes[i--]) {
+                    if (node.nodeType === 1) {
+                        return node;
+                    }
+                }
+                return null;
+            }
+        });
+    }
+})(window.Node || window.Element);
+
+ +

Спецификация

+ + + + + + + + + + + + + + + + + + + +
SpecificationStatusComment
{{SpecName('DOM WHATWG', '#dom-parentnode-lastelementchild', 'ParentNode.lastElementChild')}}{{Spec2('DOM WHATWG')}}Splitted the ElementTraversal interface in {{domxref("ChildNode")}} and ParentNode. This method is now defined on the latter.
+ The {{domxref("Document")}} and {{domxref("DocumentFragment")}} implemented the new interfaces.
{{SpecName('Element Traversal', '#attribute-lastElementChild', 'ElementTraversal.lastElementChild')}}{{Spec2('Element Traversal')}}Added its initial definition to the ElementTraversal pure interface and use it on {{domxref("Element")}}.
+ +

Совместимость с браузерами

+ +

{{ CompatibilityTable() }}

+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + +
FeatureChromeFirefox (Gecko)Internet ExplorerOperaSafari
Basic support (on {{domxref("Element")}})1.0{{CompatGeckoDesktop("1.9.1")}}9.010.04.0
Support on {{domxref("Document")}} and {{domxref("DocumentFragment")}} {{experimental_inline}}29.0{{CompatGeckoDesktop("25.0")}}{{CompatNo}}16.0{{CompatNo}}
+
+ +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + +
FeatureAndroidFirefox Mobile (Gecko)IE MobileOpera MobileSafari Mobile
Basic support (on {{domxref("Element")}}){{ CompatVersionUnknown() }}{{CompatGeckoMobile("1.9.1")}}{{ CompatVersionUnknown() }}{{ CompatVersionUnknown() }}{{ CompatVersionUnknown() }}
Support on {{domxref("Document")}} and {{domxref("DocumentFragment")}} {{experimental_inline}}{{CompatVersionUnknown}}{{CompatGeckoMobile("25.0")}}{{CompatNo}}16.0{{CompatNo}}
+
+ + + +

Так же смотрите

+ + -- cgit v1.2.3-54-g00ecf