小编col*_*ick的帖子

你如何挂钩所有使用Fetch Api的AJAX请求？以前我们可以做这样的事情来挂钩所有的XMLHttpRequest:

(function() {
    var origOpen = XMLHttpRequest.prototype.open;
    XMLHttpRequest.prototype.open = function() {
      console.log('request started!');
      this.addEventListener('load', function() {
          console.log('request completed!');
          console.log(this.readyState); //will always be 4 (ajax is completed successfully)
          console.log(this.responseText); //whatever the response was
      });
      origOpen.apply(this, arguments);
    };
  })();

或者更好的是,如果你想添加上面的函数,你将如何挂钩所有Fetch Api和所有XMLHttpRequest AJAX请求？