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今天遇到一个需要用javascript将url中的某些参数替换的需求:

    var a =  document.createElement('a');

        protocol: a.protocol.replace(':',''),

                seg = a.search.replace(/^\?/,'').split('&'),

                len = seg.length, i = 0, s;

                if (!seg[i]) { continue; }

        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('/')

用法：

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'

取得URL的参数，以对象形式返回！

var getParam = function(path){

    var result = {},param = /([^?=&]+)=([^&]+)/ig,match;

    while((match = param.exec(path)) != null){

        result[match[1]] = match[2];

Object.keys = Object.keys || function(obj){

        if(obj.hasOwnProperty(i)){

alert(Object.keys(r))//ct,tn,sc,pn,rn,lm,rs4,rs3,word,frs