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.w3school.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.w3school.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.w3school.com.cn/jsref/dom_obj_anchor.asp?type=2#id2"

13 }