javascript：读取 html 标签中的 lang 属性
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javascript: reading lang attribute in html tag
提问by HymanLeo
In <html>tag I have attribute lang. How do I reach it using .js. I want to use contains of lang as a variable. So as I understand it should start with var lang = ????
在<html>标签中我有属性lang。我如何使用 .js 访问它。我想使用包含的 lang 作为变量。所以据我所知，它应该以var lang = ????
回答by Barrie Reader
In jQuery:
在 jQuery 中：
var theLanguage = $('html').attr('lang');
alert(theLanguage);
If you wanna fiddle: http://jsfiddle.net/NX367/
如果你想摆弄：http: //jsfiddle.net/NX367/
If you want to do it in plain Javascript, this site will explain better than I:
http://www.javascriptkit.com/dhtmltutors/domattribute.shtml
如果你想用纯 Javascript 来做，这个网站会比我解释得更好：http:
//www.javascriptkit.com/dhtmltutors/domattribute.shtml
回答by Loktar
Pure js way
纯js方式
var lang = document.getElementsByTagName("html")[0].getAttribute("lang");
回答by Josh Crozier
The easiest way to retrieve the langattribute is to access the langproperty on the read-only documentElementpropertyon the documentobject:
检索lang属性的最简单方法是访问对象lang的只读documentElement属性上的document属性：
document.documentElement.lang;
