利用a标签自动解析URL

对于window.location，我们比较熟悉，它有PRotocol，hostname，host，port，search，hash，href，pathname等属性，a标签也和window.location一样，也有这样属性，这样可以方便我们分析网址，闲话少说，上代码。

 1 function parseURL(url) { 2     var a =  document.createElement('a'); 3     a.href = url; 4     return { 5         source: url, 6         protocol: a.protocol.replace(':',''), 7         host: a.hostname, 8         port: a.port||'80', 9         query: a.search,10         params: (function(){11             var ret = {},12                 seg = a.search.replace(/^/?/,'').split('&'),13                 len = seg.length, i = 0, s;14             for (;i<len;i++) {15                 if (!seg[i]) { continue; }16                 s = seg[i].split('=');17                 ret[s[0]] = s[1];18             }19             return ret;20         })(),21         file: (a.pathname.match(///([^//?#]+)$/i) || [,''])[1],22         hash: a.hash.replace('#',''),23         path: a.pathname.replace(/^([^//])/,'/$1'),24         relative: (a.href.match(/tps?:////[^//]+(.+)/) || [,''])[1],25         segments: a.pathname.replace(/^///,'').split('/')26     };27 }

测试地址

console.log(parseURL("http://www.Vevb.com.cn/jsref/dom_obj_anchor.asp?type=2#id2"));

结果如下

 1 { 2     file: "dom_obj_anchor.asp", 3     hash: "id2", 4     host: "www.Vevb.com.cn", 5     params: {type: "2"}, 6     path: "/jsref/dom_obj_anchor.asp", 7     port: "80", 8     protocol: "http", 9     query: "?type=2",10     relative: "/jsref/dom_obj_anchor.asp?type=2#id2",11     segments: [0: "jsref",1: "dom_obj_anchor.asp"],12     source: "http://www.Vevb.com.cn/jsref/dom_obj_anchor.asp?type=2#id2"13 }