Javascript - 对象不支持 document.createEvent

Question

我正在开发一个自动化项目，我试图单击网站上的按钮。我已设法识别该元素，但当我尝试使用 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

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

它已被替换为Event()

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

因此，对于您的代码，这应该作为重构:

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);
  }
}