(function(open) {
    XMLHttpRequest.prototype.open = function(method, url, async, user, password) {
      this.addEventListener("load", function() {
        console.log('XMLHttpRequest 请求完成', method, url);
      });
      open.call(this, method, url, async, user, password);
    };
  })(XMLHttpRequest.prototype.open);
  
  (function(fetch) {
    window.fetch = function() {
      return fetch.apply(this, arguments).then(function(response) {
        console.log('fetch 请求完成', response.url);
        return response;
      });
    };
  })(window.fetch);