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 | 95 ---------------------- .../web/api/parentnode/lastelementchild/index.html | 93 --------------------- 2 files changed, 188 deletions(-) delete mode 100644 files/zh-cn/web/api/parentnode/firstelementchild/index.html delete mode 100644 files/zh-cn/web/api/parentnode/lastelementchild/index.html (limited to 'files/zh-cn/web/api') diff --git a/files/zh-cn/web/api/parentnode/firstelementchild/index.html b/files/zh-cn/web/api/parentnode/firstelementchild/index.html deleted file mode 100644 index 1ff4b6f06f..0000000000 --- a/files/zh-cn/web/api/parentnode/firstelementchild/index.html +++ /dev/null @@ -1,95 +0,0 @@ ---- -title: Element.firstElementChild -slug: Web/API/ParentNode/firstElementChild -translation_of: Web/API/ParentNode/firstElementChild ---- -

{{ APIRef("DOM") }}

- -

ParentNode.firstElementChild 只读属性，返回对象的第一个子 {{domxref("元素")}}, 如果没有子元素，则为null。

- -
-

他的属性最初是在{{domxref("element遍历")}}纯接口中定义的。由于这个接口包含两组不同的属性，一个针对具有子元素的{{domxref("Node")}}，一个针对子元素的属性，因此它们被移动到两个单独的纯接口中，{{domxref("ParentNode")}}和{{domxref("ChildNode")}}。在本例中，firstElementChild移动到{{domxref("ParentNode")}}。这是一个相当技术性的更改，不应该影响兼容性。

-
- -

语法

- -
var element = node.firstElementChild;
-
- -

例子

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

适用于 IE8、IE9 和 Safari 的 Polyfill

- -
// Overwrites native 'firstElementChild' prototype.
-// Adds Document & DocumentFragment support for IE9 & Safari.
-// Returns array instead of HTMLCollection.
-;(function(constructor) {
-    if (constructor &&
-        constructor.prototype &&
-        constructor.prototype.firstElementChild == null) {
-        Object.defineProperty(constructor.prototype, 'firstElementChild', {
-            get: function() {
-                var node, nodes = this.childNodes, i = 0;
-                while (node = nodes[i++]) {
-                    if (node.nodeType === 1) {
-                        return node;
-                    }
-                }
-                return null;
-            }
-        });
-    }
-})(window.Node || window.Element);
- -

规范

- - - - - - - - - - - - - - - - - - - -
SpecificationStatusComment
{{SpecName('DOM WHATWG', '#dom-parentnode-firstelementchild', 'ParentNode.firstElementChild')}}{{Spec2('DOM WHATWG')}}Splitted the ElementTraversalinterface 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 theElementTraversal pure interface and use it on {{domxref("Element")}}.
- -

浏览器兼容性

- - - -

{{Compat("api.ParentNode.firstElementChild")}}

- -

参见

- -

Ed

- - diff --git a/files/zh-cn/web/api/parentnode/lastelementchild/index.html b/files/zh-cn/web/api/parentnode/lastelementchild/index.html deleted file mode 100644 index 57481ff762..0000000000 --- a/files/zh-cn/web/api/parentnode/lastelementchild/index.html +++ /dev/null @@ -1,93 +0,0 @@ ---- -title: Element.lastElementChild -slug: Web/API/ParentNode/lastElementChild -translation_of: Web/API/ParentNode/lastElementChild ---- -

{{ APIRef("DOM") }}

- -

只读属性 ParentNode.lastElementChild 返回对象的最后一个子{{domxref("Element", "元素")}}，如果没有子元素，则返回 null。

- -
-

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.

-
- -

语法

- -
var element = node.lastElementChild;
- -

例子

- -
<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>
-
- -

适用于 IE8、IE9 和 Safari 的 Polyfill

- -
// 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);
-
- -

规范

- - - - - - - - - - - - - - - - - - - -
规范状态备注
{{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")}}.
- -

浏览器兼容性

- - - -

{{Compat("api.ParentNode.lastElementChild")}}

- -

参见

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