今天遇到一个需要用javascript将url中的某些参数替换的需求，想起了不久前从网上淘到了一个parseUrl函数，正好可以借此实现，代码整理如下：
代码如下:
//分析url
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('/')
};
}
//替换myUrl中的同名参数值
function replaceUrlParams(myUrl, newParams) {
/*
for (var x in myUrl.params) {
for (var y in newParams) {
if (x.toLowerCase() == y.toLowerCase()) {
myUrl.params[x] = newParams[y];
}
}
}
*/
for (var x in newParams) {
var hasInMyUrlParams = false;
for (var y in myUrl.params) {
