npm -处理url地址的工具包

npm i urijs

var URI = require('urijs');

// mutating URLs
URI("http://example.org/foo.html?hello=world")
  .username("rodneyrehm")
    // -> http://[email protected]/foo.html?hello=world
  .username("")
    // -> http://example.org/foo.html?hello=world
  .directory("bar")
    // -> http://example.org/bar/foo.html?hello=world
  .suffix("xml")
    // -> http://example.org/bar/foo.xml?hello=world
  .query("")
    // -> http://example.org/bar/foo.xml
  .tld("com")
    // -> http://example.com/bar/foo.xml
  .query({ foo: "bar", hello: ["world", "mars"] });
    // -> http://example.com/bar/foo.xml?foo=bar&hello=world&hello=mars
 
// cleaning things up
URI("?&foo=bar&&foo=bar&foo=baz&")
  .normalizeQuery();
    // -> ?foo=bar&foo=baz
 
// working with relative paths
URI("/foo/bar/baz.html")
  .relativeTo("/foo/bar/world.html");
    // -> ./baz.html
 
URI("/foo/bar/baz.html")
  .relativeTo("/foo/bar/sub/world.html")
    // -> ../baz.html
  .absoluteTo("/foo/bar/sub/world.html");
    // -> /foo/bar/baz.html
 
// URI Templates
URI.expand("/foo/{dir}/{file}", {
  dir: "bar",
  file: "world.html"
});
// -> /foo/bar/world.html