A tag is used to automatically parse the URL to analyze the URL instance

For window.location, we are familiar with it. It has the attributes of protocol, hostname, host, port, search, hash, href, pathname, etc. The a tag is also the same as window.location, and it also has such attributes, which can facilitate us to analyze the url, so that we can write the code without further discussion.

function parseURL(url) {
var a = document.createElement('a');
a.href = url;
return {
source: url,
protocol: a.protocol.replace(':',''),
host: a.hostname,
port: a.port||'80',
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('/')
};
}

Address of the test

The console. The log (parseURL (" http://www.w3school.com.cn/jsref/dom_obj_anchor.asp? Type = 2 # id2 "));

The results are as follows

{

file: "dom_obj_anchor.asp",

hash: "id2",

host: "www.w3school.com.cn",

params: {type: "2"},

path: "/jsref/dom_obj_anchor.asp",

port: "80",

protocol: "http",

query: "?type=2",

relative: "/jsref/dom_obj_anchor.asp?type=2#id2",

segments: [0: "jsref",1: "dom_obj_anchor.asp"],

source: http://www.w3school.com.cn/jsref/dom_obj_anchor.asp?type=2#id2

}