利用a标签自动解析URL分析网址实例

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。

function parseURL(url) {
var a = document.createElement('a');
a.href = url;
return {
source: url,
protocol: a.protocol.replace(':',''),
host: a.hostname,
port: a.port||'80',
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(/tps?:\/\/[^\/]+(.+)/) || [,''])[1],
segments: a.pathname.replace(/^\//,'').split('/')
};
}

测试地址

console.log(parseURL("http://www.w3school.com.cn/jsref/dom_obj_anchor.asp?type=2#id2"));

结果如下

{

file: "dom_obj_anchor.asp",

hash: "id2",

host: "www.w3school.com.cn",

params: {type: "2"},

path: "/jsref/dom_obj_anchor.asp",

port: "80",

protocol: "http",

query: "?type=2",

relative: "/jsref/dom_obj_anchor.asp?type=2#id2",

segments: [0: "jsref",1: "dom_obj_anchor.asp"],

source: http://www.w3school.com.cn/jsref/dom_obj_anchor.asp?type=2#id2

}