From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:40:17 -0500 Subject: initial commit --- files/zh-cn/web/api/document/head/index.html | 72 ++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 files/zh-cn/web/api/document/head/index.html (limited to 'files/zh-cn/web/api/document/head/index.html') diff --git a/files/zh-cn/web/api/document/head/index.html b/files/zh-cn/web/api/document/head/index.html new file mode 100644 index 0000000000..a356a8273b --- /dev/null +++ b/files/zh-cn/web/api/document/head/index.html @@ -0,0 +1,72 @@ +--- +title: Document.head +slug: Web/API/Document/head +translation_of: Web/API/Document/head +--- +

{{APIRef}}

+

概述

+

返回当前文档中的 {{ HTMLElement("head") }} 元素。如果有多个 <head> 元素，则返回第一个。

+

语法

+
var objRef = document.head;
+
+

示例

+
// HTML部分源码为: <head id="my-document-head">
+var aHead = document.head;
+
+alert(aHead.id); // "my-document-head";
+
+alert( document.head === document.querySelector("head") ); // true
+
+

附注

+

document.head 是个只读属性，为该属性赋值只会静默失败，如果在严格模式中，则会抛出TypeError异常。

+

浏览器兼容性

+
+ {{CompatibilityTable}}
+
+ + + + + + + + + + + + + + + + + + + +
FeatureChromeFirefox (Gecko)Internet ExplorerOperaSafari
Basic support4.0{{CompatGeckoDesktop("2")}}9.011.05.0
+
+
+ + + + + + + + + + + + + + + + + + + +
FeatureAndroidFirefox Mobile (Gecko)IE MobileOpera MobileSafari Mobile
Basic support{{CompatVersionUnknown}}{{CompatGeckoMobile("2")}}9.0{{CompatVersionUnknown}}{{CompatVersionUnknown}}
+
+

规范

+ -- cgit v1.2.3-54-g00ecf