JavaScript-对象

Question

我正在一个自动化项目中，尝试在网站上单击一个按钮。我设法识别出该元素，但是当我尝试使用document.createEvent时，它告诉我该对象不支持它。有什么想法吗？

function categoryClick() {
  var events = ["mousemove", "mouseover", "focus", "mousedown", "mouseup", "click"];
  var combobox = document.getElementById("category");
  var a = combobox.childNodes;
  var target = a[0].childNodes[0];

  for (var i = 0; i < events.length; i++) {
    var eventObject = document.createEvent("Event");
    eventObject.initEvent(events[i], true, false);

    target.dispatchEvent(eventObject);
  }
}

Answer 1

createEvent已贬值

请参阅：https://developer.mozilla.org/en-US/docs/Web/API/Document/createEvent

它已被Event()

取代

请参阅：https://developer.mozilla.org/en-US/docs/Web/API/Event/Event

因此对于您的代码，这应该可以作为重构：

function categoryClick() {
  var events = ["mousemove", "mouseover", "focus", "mousedown", "mouseup", "click"];
  var combobox = document.getElementById("category");
  var a = combobox.childNodes;
  var target = a[0].childNodes[0];

  for (var i = 0; i < events.length; i++) {
    var eventObject = new Event(events[i], {"bubbles":true, "cancelable":false});

    target.dispatchEvent(eventObject);
  }
}