题目：
使用parseUrl函数， parseUrl("http://www.xiyanghui.com/product/list?id=123456&sort=discount#title");
期望得到结果：
{
protocol: "http",
host: "www.xiyanghui.com",
path: "/product/list",
params: {
id: "12345",
sort: "discount"
},
hash: "title"
}
这道题先生成成a标签，然后用a标签的属性和正则获取各个属性。
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: (() => {
var ret = {}, querys = [];
var searchQuery = a.search.replace(/^\?/,'').split('&');
for ( var i = 0;i < searchQuery.length; i++) {
if (searchQuery[i]) {
querys = searchQuery[i].split('=');
ret[querys[0]] = querys[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('/')
};
}
