From 49c5601989809c347a5a595e3c5edc08731e5305 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Mon, 19 Jul 2021 14:36:49 -0400 Subject: Remove previously orphaned file (#1616) * remove previously orphaned file * rid of more * remove one more * remove more * another one * delete more --- files/zh-cn/web/api/element/before/index.html | 188 -------------------------- 1 file changed, 188 deletions(-) delete mode 100644 files/zh-cn/web/api/element/before/index.html (limited to 'files/zh-cn/web/api/element/before/index.html') diff --git a/files/zh-cn/web/api/element/before/index.html b/files/zh-cn/web/api/element/before/index.html deleted file mode 100644 index add3dab015..0000000000 --- a/files/zh-cn/web/api/element/before/index.html +++ /dev/null @@ -1,188 +0,0 @@ ---- -title: ChildNode.before() -slug: orphaned/Web/API/ChildNode/before -tags: - - api、dom、节点、方法 -translation_of: Web/API/ChildNode/before -original_slug: Web/API/ChildNode/before ---- -
{{APIRef("DOM")}} {{SeeCompatTable}}
- -

 ChildNode.before 方法可以在ChildNode这个节点的父节点中插入一些列的 {{domxref("Node")}} 或者 {{domxref("DOMString")}} 对象，位置就是在ChildNode节点的前面，{{domxref("DOMString")}} 对象其实和 {{domxref("Text")}}节点一样的方式来完成插入的。

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语法

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[Throws, Unscopable]
-void ChildNode.before((Node or DOMString)... nodes);
-
- -

Parameters参数

- -
-
nodes
-
一系列的 {{domxref("Node")}} 或者 {{domxref("DOMString")}} 
-
- -

Exceptions

- - - -

Examples事例

- -

Inserting an element插入元素节点

- -
var parent = document.createElement("div");
-var child = document.createElement("p");
-parent.appendChild(child);
-var span = document.createElement("span");
-
-child.before(span);
-
-console.log(parent.outerHTML);
-// "<div><span></span><p></p></div>"
-
- -

Inserting text插入文本节点

- -
var parent = document.createElement("div");
-var child = document.createElement("p");
-parent.appendChild(child);
-
-child.before("Text");
-
-console.log(parent.outerHTML);
-// "<div>Text<p></p></div>"
- -

Inserting an element and text同时插入文本和元素

- -
var parent = document.createElement("div");
-var child = document.createElement("p");
-parent.appendChild(child);
-var span = document.createElement("span");
-
-child.before(span, "Text");
-
-console.log(parent.outerHTML);
-// "<div><span></span>Text<p></p></div>"
- -

ChildNode.before() is unscopable不可使用区域

- -

The before() 不能配合with声明使用，See {{jsxref("Symbol.unscopables")}} for more information.

- -
with(node) {
-  before("foo");
-}
-// ReferenceError: before is not defined
- -

Polyfill

- -

兼容ie9或者更高版本的方法，You can polyfill the before() method in Internet Explorer 9 and higher with the following code:

- -
// from: https://github.com/jserz/js_piece/blob/master/DOM/ChildNode/before()/before().md
-(function (arr) {
-  arr.forEach(function (item) {
-    if (item.hasOwnProperty('before')) {
-      return;
-    }
-    Object.defineProperty(item, 'before', {
-      configurable: true,
-      enumerable: true,
-      writable: true,
-      value: function before() {
-        var argArr = Array.prototype.slice.call(arguments),
-          docFrag = document.createDocumentFragment();
-
-        argArr.forEach(function (argItem) {
-          var isNode = argItem instanceof Node;
-          docFrag.appendChild(isNode ? argItem : document.createTextNode(String(argItem)));
-        });
-
-        this.parentNode.insertBefore(docFrag, this);
-      }
-    });
-  });
-})([Element.prototype, CharacterData.prototype, DocumentType.prototype]);
- -

Specification

- - - - - - - - - - - - - - -
SpecificationStatusComment
{{SpecName('DOM WHATWG', '#dom-childnode-before', 'ChildNode.before()')}}{{Spec2('DOM WHATWG')}}Initial definition.
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Browser compatibility

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{{CompatibilityTable}}

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FeatureChromeFirefox (Gecko)Internet ExplorerOperaSafari
Basic support{{CompatChrome(54.0)}}{{CompatGeckoDesktop(49)}}{{CompatUnknown}}{{CompatOpera(39)}}{{CompatUnknown}}
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- -
- - - - - - - - - - - - - - - - - - - - - - - -
FeatureAndroidAndroid WebviewFirefox Mobile (Gecko)IE MobileOpera MobileSafari MobileChrome for Android
Basic support{{CompatNo}}{{CompatChrome(54.0)}}{{CompatGeckoMobile(49)}}{{CompatUnknown}}{{CompatOpera(39)}}{{CompatUnknown}}{{CompatChrome(54.0)}}
-
- -

See also

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