从IE4开始IE的object model才增加了document.all[],来看看document.all[]的Description: Array of all HTML tags in the document.Collection of all elements contained by the object.
Most third-party browsers are “strict standards” implementations, meaning that they implement W3C and ECMA standards and ignore most of the proprietary object models of Internet Explorer and Netscape.If the demographic for your Web site includes users likely to use less common browsers, such as Linux aficionados, it might be a good idea to avoid IE-specific features and use the W3C DOM instead. by Internet Explorer 6, we see that IE implements significant portions of the W3C DOM.
毕竟大多数人还不了解标准,在使用标准前,你还可以在你的网页中用document.all[]访问文档对象前面写到WEB标准,今天继续WEB标准下可以通过getElementById(), getElementsByName(), and getElementsByTagName()访问DOCUMENT中的任一个标签: