web开发小技巧：异类的Javascript处理和解析URL的方式

今天看到一个关于异类的Javascript处理和解析URL的方式 ，web开发小技巧。转载如下：
<script>
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('/')
};
}
var myURL = parseURL('http://abc.com:8080/dir/index.html?id=255&m=hello#top');
document.write("<br/>"+myURL.file ); // = 'index.html'
document.write("<br/>"+myURL.hash ); // = 'top'
document.write("<br/>"+myURL.host ); // = 'abc.com'
document.write("<br/>"+myURL.query ); // = '?id=255&m=hello'
document.write("<br/>"+myURL.params ); // = Object = { id: 255, m: hello }
document.write("<br/>"+myURL.path ); // = '/dir/index.html'
document.write("<br/>"+myURL.relative); // = '/dir/index.html?id=255&m=hello#top'
document.write("<br/>"+myURL.segments); // = Array = ['dir', 'index.html']
document.write("<br/>"+myURL.port ); // = '8080'
document.write("<br/>"+myURL.protocol); // = 'http'
document.write("<br/>"+myURL.source ); // = 'http://abc.com:8080/dir/index.html?id=255&m=hello#top'
document.write("<br/>");
for(var i in myURL.params)
document.write("<br/>"+i+":"+myURL.params[i]);
</script>

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