javascript parseUrl函数解析url获取网址url参数

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(/tps?://[^/]+(.+)/) || [,''])[1], 
        segments: a.pathname.replace(/^//,'').split('/') 
    }; 
} 

使用实例：

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'