21世紀開運網www.21kaiyun.com用javascript替換URL中的參數值的技巧

今天遇到一個需要用javascript將url中的某些參數替換的需求:

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('/')

};

}

用法：

var myURL = parseURL('http://www.21kaiyun.com/default.aspx?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://www.21kaiyun.com

取得URL的參數，以對象形式返回！

var getParam = function(path){

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

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

result[match[1]] = match[2];

}

return result;

}

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

var result = [];

for(var i in obj){

if(obj.hasOwnProperty(i)){

result.push(i)

}

}

return result;

}

var path = "http://www.21kaiyun.com/f?ct=318767104&tn=baiduKeywordSearch&sc=1&pn=0&rn=50&lm=4&rs4=2&rs3=2&word=%D0%C2%BE%D3%D5%D1%C4%CB&frs=jpq";

var r = getParam(path);

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