intercept ajax request on JS

intercept-ajax.js

var oldXHROpen = window.XMLHttpRequest.prototype.open;
window.XMLHttpRequest.prototype.open = function(method, url, async, user, password) {
  if (url.indexOf('getVideo') >= 0) {
    this.addEventListener('load', function() {
      console(this.responseText);
    });
    return oldXHROpen.apply(this, arguments);
  }
}