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。

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

 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 }