类：URL

¥Class: URL

浏览器兼容的 URL 类，按照 WHATWG 网址标准实现。已解析 URL 的示例 可以在标准本身中找到。URL 类也在全局对象上可用。

¥Browser-compatible URL class, implemented by following the WHATWG URL Standard. Examples of parsed URLs may be found in the Standard itself. The URL class is also available on the global object.

按照浏览器的约定，URL 对象的所有属性都被实现为类原型上的获取器和设置器，而不是对象本身的数据属性。因此，与 旧版 urlObject 不同，在 URL 对象（例如 delete myURL.protocol、delete myURL.pathname 等）的任何属性上使用 delete 关键字没有效果，但仍会返回 true。

¥In accordance with browser conventions, all properties of URL objects are implemented as getters and setters on the class prototype, rather than as data properties on the object itself. Thus, unlike legacy urlObjects, using the delete keyword on any properties of URL objects (e.g. delete myURL.protocol, delete myURL.pathname, etc) has no effect but will still return true.