Parsing URLs with the DOM-优快云博客

本文介绍了一种使用DOM操作解析URL的方法，通过创建锚元素并利用location属性获取URL的各个部分，如协议、主机名、端口等，并进行了浏览器间的规范化处理。

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看到牛人解析DOM时分析URL的方法，果然聪明：

// This function creates a new anchor element and uses location // properties (inherent) to get the desired URL data. Some String // operations are used (to normalize results across browsers). function parseURL(url) { var a = document.createElement('a'); a.href = url; return { source: url, protocol: a.protocol.replace(':',''), host: a.hostname, port: a.port, query: a.search, params: (function(){ var ret = {}, seg = a.search.replace(/^\?/,'').split('&'), len = seg.length, i = 0, s; for (;i<len;i++) { if (!seg[i]) { continue; } s = seg[i].split('='); ret[s[0]] = s[1]; } return ret; })(), file: (a.pathname.match(/\/([^\/?#]+)$/i) || [,''])[1], hash: a.hash.replace('#',''), path: a.pathname.replace(/^([^\/])/,'/$1'), relative: (a.href.match(/tp:\/\/[^\/]+(.+)/) || [,''])[1], segments: a.pathname.replace(/^\//,'').split('/') }; }

测试代码：

var myURL = parseURL('http://abc.com:8080/dir/index.html?id=255&m=hello#top'); myURL.file; // = 'index.html' myURL.hash; // = 'top' myURL.host; // = 'abc.com' myURL.query; // = '?id=255&m=hello' myURL.params; // = Object = { id: 255, m: hello } myURL.path; // = '/dir/index.html' myURL.segments; // = Array = ['dir', 'index.html'] myURL.port; // = '8080' myURL.protocol; // = 'http' myURL.source; // = 'http://abc.com:8080/dir/index.html?id=255&m=hello#top'

原文地址：http://james.padolsey.com/javascript/parsing-urls-with-the-dom/