SOURCE

/**
 * 将url解析为Object
 * @author SevensChan <chanhaozi@gmail.com>
 * @param {String} url字符串
 * @return {Object} url解析对象
 */
function parseUrl (url) {
  // Decode URI
  const urlStr = decodeURI(url) || ''
  
	// Check URL
  if (!isValidURL(urlStr)) {
    throw new Error(`Type Error: '${url} is not a valid url.'`)
  }
  
  // Split URL
  const [protocol, urls] = url.split('://')
  const [paths, queries]  = urls.split('?')
  const [host, ...path] = paths.split('/')
  const [queriesStr, hash] = queries.split('#')
  const query = {}
  queriesStr.split('&').forEach(ele => {
    if (ele.length === 0) return
    const [key, val] = ele.split('=')
    query[key] = val
  })
  
  // Return Result
  return {
    protocol,
    host,
    path: path && path.length > 0 ? `/${path.join('/')}` : '/',
    query,
    hash
  }
}

function isValidURL (url) {
  var reg=/(http|https|ftp):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?/
  return reg.test(url)
}

// Test Case
let res = parseUrl('http://www.xiyanghui.com/product/list?id=123456&sort=discount#title')
console.log(JSON.stringify(res))
console.log(res.protocol === 'http')
console.log(res.host === 'www.xiyanghui.com')
console.log(res.path === '/product/list')
console.log(Object.keys(res.query).length === 2)
console.log(res.hash === 'title')

res = parseUrl('https://www.xiyanghui.com?#test')
console.log(JSON.stringify(res))
console.log(res.protocol === 'https')
console.log(res.host === 'www.xiyanghui.com')
console.log(res.path === '/')
console.log(Object.keys(res.query).length === 0)
console.log(res.hash === 'test')